74HC123DB,112 - NEXPERIA - Datasheet.Live

74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

Rev. 11.1 — 3 September 2020 Product data sheet

1. General description

The 74HC123; 74HCT123 is a dual retriggerable monostable multivibrator with reset. The basic

output pulse width is programmed by selection of external components (REXT and CEXT). Once

triggered this basic pulse width may be extended by retriggering either of the edge triggered

inputs (nA or nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW)

can be made as long as desired. Alternatively, an output delay can be terminated at any time by

a LOW-going edge on input nRD. Inputs include clamp diodes. This enables the use of current

limiting resistors to interface inputs to voltages in excess of VCC.

Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise

and fall times.

2. Features and benefits

•Wide supply voltage range from 2.0 V to 6.0 V

•CMOS low power dissipation

•High noise immunity

•Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

•Complies with JEDEC standards:

•JESD8C (2.7 V to 3.6 V)

•JESD7A (2.0 V to 6.0 V)

•Input levels:

•For 74HC123: CMOS level

•For 74HCT123: TTL level

•DC triggered from active HIGH or active LOW inputs

•Retriggerable for very long pulses up to 100 % duty factor

•Direct reset terminates output pulse

•Schmitt-trigger action on all inputs except for the reset input

•ESD protection:

•HBM JESD22-A114F exceeds 2000 V

•MM JESD22-A115-A exceeds 200 V

•Multiple package options

•Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

3. Ordering information

Table 1. Ordering information

PackageType number

Temperature range Name Description Version

74HC123D

74HCT123D

-40 °C to +125 °C SO16 plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

74HC123DB

74HCT123DB

-40 °C to +125 °C SSOP16 plastic shrink small outline package; 16 leads;

body width 5.3 mm

SOT338-1

74HC123PW

74HCT123PW

-40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

74HC123BQ -40 °C to +125 °C DHVQFN16 plastic dual in-line compatible thermal

enhanced very thin quad flat package; no leads;

16 terminals; body 2.5 × 3.5 × 0.85 mm

SOT763-1

4. Functional diagram

2RD

S13

1REXT/CEXT

1CEXT

001aaa610

1RD

2REXT/CEXT

2CEXT

Q2Q

Fig. 1. Functional diagram

Product data sheet Rev. 11.1 — 3 September 2020 2 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

2RD

2REXT/CEXT

1REXT/CEXT 15

2CEXT 6

1CEXT 14

2Q 5

2Q 12

mna515

1RD

1 1A

10 2B

Fig. 2. Logic symbol

mna516

RCX

Fig. 3. IEC logic symbol

mna518

nREXT/CEXT

VCC

VCC VCC

nRD

nB R

CL CL

Fig. 4. Logic diagram

Product data sheet Rev. 11.1 — 3 September 2020 3 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

5. Pinning information

5.1. Pinning

74HC123

74HCT123

1A VCC

1B 1REXT/CEXT

1RD 1CEXT

1Q 1Q

2Q 2Q

2CEXT 2RD

2REXT/CEXT 2B

GND 2A

001aaa698

Fig. 5. Pin configuration SOT109-1 (SO16), SOT338-1

(SSOP16) and SOT403-1 (TSSOP16)

001aaf046

74HC123

2REXT/CEXT 2B

2CEXT 2RD

2Q 2Q

1Q 1Q

1RD 1CEXT

1B 1REXT/CEXT

GND

VCC

Transparent top view

7 10

6 11

5 12

4 13

3 14

2 15

terminal 1

index area

VCC(1)

(1) This is not a supply pin. There is no electrical or

mechanical requirement to solder the pad. In case

soldered, the solder land should remain floating or

connected to VCC.

Fig. 6. Pin configuration SOT763-1 (DHVQFN16)

5.2. Pin description

Table 2. Pin description

Symbol Pin Description

1A 1 negative-edge triggered input 1

1B 2 positive-edge triggered input 1

1RD 3 direct reset LOW and positive-edge triggered input 1

1Q 4 active LOW output 1

2Q 5 active HIGH output 2

2CEXT 6 external capacitor connection 2

2REXT/CEXT 7 external resistor and capacitor connection 2

GND 8 ground (0 V)

2A 9 negative-edge triggered input 2

2B 10 positive-edge triggered input 2

2RD 11 direct reset LOW and positive-edge triggered input 2

2Q 12 active LOW output 2

1Q 13 active HIGH output 1

1CEXT 14 external capacitor connection 1

1REXT/CEXT 15 external resistor and capacitor connection 1

VCC 16 supply voltage

Product data sheet Rev. 11.1 — 3 September 2020 4 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

6. Functional description

Table 3. Function table

H = HIGH voltage level; L = LOW voltage level; X = don’t care; ↑ = LOW-to-HIGH transition; ↓ = HIGH-to-LOW transition;

= one HIGH level output pulse; = one LOW level output pulse.

Input Output

nRD nA nB nQ nQ

L X X L H

X H X L [1] H [1]

X X L L [1] H [1]

H L ↑

H ↓ H

↑ L H

[1] If the monostable was triggered before this condition was established, the pulse will continue as programmed.

7. Limiting values

Table 4. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol Parameter Conditions Min Max Unit

VCC supply voltage -0.5 +7 V

IIK input clamping current VI < -0.5 V or VI > VCC + 0.5 V - ±20 mA

IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V - ±20 mA

IOoutput current except for pins nREXT/CEXT;

VO = -0.5 V to (VCC + 0.5 V)

- ±25 mA

ICC supply current - 50 mA

IGND ground current - -50 mA

Tstg storage temperature -65 +150 °C

Ptot total power dissipation [1] - 500 mW

[1] For SOT109-1 (SO16) package: Ptot derates linearly with 12.4 mW/K above 110 °C.

For SOT338-1 (SSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C.

For SOT403-1 (TSSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C.

For SOT763-1 (DHVQFN16) package: Ptot derates linearly with 11.2 mW/K above 106 °C.

Product data sheet Rev. 11.1 — 3 September 2020 5 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

8. Recommended operating conditions

Table 5. Recommended operating conditions

74HC123 74HCT123Symbol Parameter Conditions

Min Typ Max Min Typ Max

Unit

VCC supply voltage 2.0 5.0 6.0 4.5 5.0 5.5 V

VIinput voltage 0 - VCC 0 - VCC V

VOoutput voltage 0 - VCC 0 - VCC V

nRD input

VCC = 2.0 V - - 625 - - - ns/V

VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V

Δt/ΔV input transition rise and

fall rate

VCC = 6.0 V - - 83 - - - ns/V

Tamb ambient temperature -40 +25 +125 -40 +25 +125 °C

9. Static characteristics

Table 6. Static characteristics

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

74HC123

VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V

VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V

VIH HIGH-level

input voltage

VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V

VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V

VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V

VIL LOW-level

input voltage

VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V

VI = VIH or VIL

IO = -20 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V

IO = -20 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V

IO = -20 μA; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V

IO = -4 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V

VOH HIGH-level

output voltage

IO = -5.2 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V

VI = VIH or VIL

IO = 20 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V

IO = 20 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V

IO = 20 μA; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V

IO = 4 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V

VOL LOW-level

output voltage

IO = 5.2 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V

IIinput leakage

current

VI = VCC or GND; VCC = 6.0 V - - ±0.1 - ±1.0 - ±1.0 μA

ICC supply current VI = VCC or GND; IO = 0 A;

VCC = 6.0 V

- - 8.0 - 80 - 160 μA

CIinput

capacitance

- 3.5 - - - - - pF

Product data sheet Rev. 11.1 — 3 September 2020 6 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

74HCT123

VIH HIGH-level

input voltage

VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V

VIL LOW-level

input voltage

VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V

VI = VIH or VIL; VCC = 4.5 V

IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V

VOH HIGH-level

output voltage

IO = -4 mA 3.98 4.32 - 3.84 - 3.7 - V

VI = VIH or VIL; VCC = 4.5 V

IO = 20 μA - 0 0.1 - 0.1 - 0.1 V

VOL LOW-level

output voltage

IO = 4.0 mA - 0.15 0.26 - 0.33 - 0.4 V

IIinput leakage

current

VI = VCC or GND; VCC = 5.5 V - - ±0.1 - ±1.0 - ±1.0 μA

ICC supply current VI = VCC or GND; IO = 0 A;

VCC = 5.5 V

- - 8.0 - 80 - 160 μA

per input pin; IO = 0 A;

VI = VCC - 2.1 V;

other inputs at VCC or GND;

VCC = 4.5 V to 5.5 V

pins nA, nB - 35 125 - 160 - 170 μA

ΔICC additional

supply current

pin nRD - 50 180 - 225 - 245 μA

CIinput

capacitance

- 3.5 - - - - - pF

Product data sheet Rev. 11.1 — 3 September 2020 7 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

10. Dynamic characteristics

Table 7. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Fig. 12.

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

74HC123

nRD, nA, nB to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

[1]

VCC = 2.0 V - 83 255 - 320 - 385 ns

VCC = 4.5 V - 30 51 - 64 - 77 ns

VCC = 5 V; CL = 15 pF - 26 - - - - - ns

VCC = 6.0 V - 24 43 - 54 - 65 ns

nRD (reset) to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

VCC = 2.0 V - 66 215 - 270 - 325 ns

VCC = 4.5 V - 24 43 - 54 - 65 ns

VCC = 5 V; CL = 15 pF - 20 - - - - - ns

tpd propagation

delay

VCC = 6.0 V - 19 37 - 46 - 55 ns

see Fig. 9 [1]

VCC = 2.0 V - 19 75 - 95 - 110 ns

VCC = 4.5 V - 7 15 - 19 - 22 ns

tttransition time

VCC = 6.0 V - 6 13 - 16 - 19 ns

nA LOW; see Fig. 10

VCC = 2.0 V 100 8 - 125 - 150 - ns

VCC = 4.5 V 20 3 - 25 - 30 - ns

VCC = 6.0 V 17 2 - 21 - 26 - ns

nB HIGH; see Fig. 10

VCC = 2.0 V 100 17 - 125 - 150 - ns

VCC = 4.5 V 20 6 - 25 - 30 - ns

VCC = 6.0 V 17 5 - 21 - 26 - ns

nRD LOW; see Fig. 11

VCC = 2.0 V 100 14 - 125 - 150 - ns

VCC = 4.5 V 20 5 - 25 - 30 - ns

VCC = 6.0 V 17 4 - 21 - 26 - ns

nQ HIGH and nQ LOW;

VCC = 5.0 V; see Fig. 10

and Fig. 11

[2]

CEXT = 100 nF;

REXT = 10 kΩ

- 450 - - - - - μs

tWpulse width

CEXT = 0 pF;

REXT = 5 kΩ

- 75 - - - - - ns

trtrig retrigger time nA, nB; CEXT = 0 pF;

REXT = 5 kΩ; VCC = 5.0 V;

see Fig. 10

[3] [4] - 110 - - - - - ns

Product data sheet Rev. 11.1 — 3 September 2020 8 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

see Fig. 7

VCC = 2.0 V 10 - 1000 - - - - kΩ

REXT external timing

resistor

VCC = 5.0 V 2 - 1000 - - - - kΩ

CEXT external timing

capacitor

VCC = 5.0 V; see Fig. 7 [4] - - - - - - - pF

CPD power

dissipation

capacitance

per monostable;

VI = GND to VCC

[5] - 54 - - - - - pF

74HCT123

nRD, nA, nB to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

VCC = 4.5 V - 30 51 - 64 - 77 ns

VCC = 5 V; CL = 15 pF - 26 - - - - - ns

nRD (reset) to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

VCC = 4.5 V - 27 46 - 58 - 69 ns

tPHL HIGH to LOW

propagation

delay

VCC = 5 V; CL = 15 pF - 23 - - - - - ns

nRD, nA, nB to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

VCC = 4.5 V - 28 51 - 64 - 77 ns

VCC = 5 V; CL = 15 pF - 26 - - - - - ns

nRD (reset) to nQ or nQ;

CEXT = 0 pF; REXT = 5 kΩ;

see Fig. 9

VCC = 4.5 V - 23 46 - 58 - 69 ns

tPLH LOW to HIGH

propagation

delay

VCC = 5 V; CL = 15 pF - 23 - - - - - ns

tttransition time VCC = 4.5 V; see Fig. 9 [1] - 7 15 - 19 - 22 ns

VCC = 4.5 V

nA LOW; see Fig. 10 20 3 - 25 - 30 - ns

nB HIGH; see Fig. 10 20 5 - 25 - 30 - ns

nRD LOW; see Fig. 11 20 7 - 25 - 30 - ns

nQ HIGH and nQ LOW;

VCC = 5.0 V; see Fig. 10

and Fig. 11

[2]

CEXT = 100 nF;

REXT = 10 kΩ

- 450 - - - - - μs

tWpulse width

CEXT = 0 pF;

REXT = 5 kΩ

- 75 - - - - - ns

trtrig retrigger time nA, nB; CEXT = 0 pF;

REXT = 5 kΩ; VCC = 5.0 V;

see Fig. 10

[3] [4] - 110 - - - - - ns

REXT external timing

resistor

VCC = 5.0 V; see Fig. 7 2 - 1000 - - - - kΩ

CEXT external timing

capacitor

VCC = 5.0 V; see Fig. 7 [4] - - - - - - - pF

Product data sheet Rev. 11.1 — 3 September 2020 9 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

25 °C -40 °C to +85 °C -40 °C to +125 °CSymbol Parameter Conditions

Min Typ Max Min Max Min Max

Unit

CPD power

dissipation

capacitance

per monostable;

VI = GND to VCC - 1.5 V

[5] - 56 - - - - - pF

[1] tpd is the same as tPHL and tPLH; tt is the same as tTHL and tTLH

[2] For other REXT and CEXT combinations see Fig. 7. If CEXT > 10 nF, the next formula is valid.

tW = K × REXT × CEXT, where:

tW = typical output pulse width in ns;

REXT = external resistor in kΩ;

CEXT = external capacitor in pF;

K = constant = 0.45 for VCC = 5.0 V and 0.55 for VCC = 2.0 V.

The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is approximately 7 pF.

[3] The time to retrigger the monostable multivibrator depends on the values of REXT and CEXT. The output pulse width will only be

extended when the time between the active-going edges of the trigger input pulses meets the minimum retrigger time. If CEXT >10 pF,

the next formula (at VCC = 5.0 V) for the setup time of a retrigger pulse is valid:

trtrig = 30 + 0.19 × REXT × CEXT 0.9 + 13 × REXT 1.05, where:

trtrig = retrigger time in ns;

CEXT = external capacitor in pF; REXT = external resistor in kΩ.

The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is 7 pF.

[4] When the device is powered-up, initiate the device via a reset pulse, when CEXT < 50 pF.

[5] CPD is used to determine the dynamic power dissipation (PD in μW).

PD = CPD x VCC 2 x fi + Σ(CL x VCC 2 x fo) + 0.75 x CEXT x VCC 2 x fo + D x 16 × VCC where:

fi = input frequency in MHz;

fo = output frequency in MHz;

D = duty factor in %;

CL = output load capacitance in pF;

VCC = supply voltage in V;

CEXT = timing capacitance in pF;

Σ(CL x VCC 2 x fo) sum of outputs.

001aaa611

103

102

105

104

106

(ns)

CEXT (pF)

1 104

103

10 102

(2)

(3)

(4)

(1)

VCC = 5.0 V; Tamb = 25 °C.

(1) REXT = 100 kΩ

(2) REXT = 50 kΩ

(3) REXT = 10 kΩ

(4) REXT = 2 kΩ

Fig. 7. Typical output pulse width as a function of the

external capacitor value

VCC (V)

0 862 4

001aaa612

0.4

0.2

0.6

0.8

'K' factor

CEXT = 10 nF; REXT = 10 kΩ to 100 kΩ.

Tamb = 25 °C.

Fig. 8. 74HC123 typical ‘K’ factor as function of VCC

Product data sheet Rev. 11.1 — 3 September 2020 10 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

10.1. Waveforms and test circuit

001aaa771

nB input

tPLH

VOH

tPLH

tTHL

tPHL

tPLH

nA input

nRD input

nQ output

tTLH

tPHL

tPHL tPLH

(reset)

VOL

VOH

VOL

GND

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Fig. 9. Propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ) and output transition times

mna521

tWtW

nB input

nA input

nQ output

trtrig

nRD = HIGH

Fig. 10. Output pulse control using retrigger pulse

Product data sheet Rev. 11.1 — 3 September 2020 11 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

mna522

tWtW

nB input

nRD input

nQ output

nA = LOW

Fig. 11. Output pulse control using reset input nRD

VMVM

10 %

90 %

0 V

negative

pulse

positive

pulse

0 V

VMVM

90 %

10 %

001aad983

DUT

VCC VCC

VIVO

RLS1

open

Test data is given in Table 8.

Definitions test circuit:

RT = Termination resistance should be equal to output impedance Zo of the pulse generator.

CL = Load capacitance including jig and probe capacitance.

RL = Load resistance.

S1 = Test selection switch.

Fig. 12. Test circuit for measuring switching times

Table 8. Test data

Input Load S1 positionType

VItr, tfCLRLtPHL, tPLH

74HC123 VCC 6 ns 15 pF, 50 pF 1 kΩ open

74HCT123 3 V 6 ns 15 pF, 50 pF 1 kΩ open

Product data sheet Rev. 11.1 — 3 September 2020 12 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

11. Application information

11.1. Timing component connections

The basic output pulse width is essentially determined by the values of the external timing

components REXT and CEXT.

001aaa854

CEXT REXT

VCC

nCEXT

nRD

nREXT/CEXT

GND

123 13 (5)

4 (12)

15 (7)14 (6)

3 (11)

1 (9)

2 (10)

(1)

(1) For minimum noise generation it is recommended to ground pins 6 (2CEXT) and

14 (1CEXT) externally to pin 8 (GND).

Fig. 13. Timing component connections

11.2. Power-up considerations

When the monostable is powered-up it may produce an output pulse, with a pulse width defined by

the values of REXT and CEXT. This output pulse can be eliminated using the circuit shown in Fig. 14.

001aaa613

VCC

RESET

nRD

CEXT REXT

VCC

nCEXTGND nREXT/CEXT

123 13 (5)

4 (12)

15 (7)14 (6)8

1 (9)

2 (10)

3 (11)

Fig. 14. Power-up output pulse elimination circuit

Product data sheet Rev. 11.1 — 3 September 2020 13 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

11.3. Power-down considerations

A large capacitor CEXT may cause problems when powering-down the monostable due to the

energy stored in this capacitor. When a system containing this device is powered-down or a

rapid decrease of VCC to zero occurs, the monostable may sustain damage, due to the capacitor

discharging through the input protection diodes. To avoid this possibility, use a damping diode

(DEXT) preferably a germanium or Schottky type diode able to withstand large current surges and

connect as shown in Fig. 15.

001aaa614

DEXT

nRD

CEXT REXT

VCC

nCEXT nREXT/CEXT

123 13 (5)

4 (12)

15 (7)

1 (9)

2 (10)

3 (11)

GND

14 (6)8

Fig. 15. Power-down protection circuit

Product data sheet Rev. 11.1 — 3 September 2020 14 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

12. Package outline

w M

detail X

v M A

(A )

pin 1 index

UNIT A

max. A

1 A

2 A

3 b

p c D

(1) E

(1) (1)

e H

E L L

p Q Z y w v θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

inches

1.75 0.25

0.10

1.45

1.25 0.25 0.49

0.36

0.25

0.19

10.0

9.8

4.0

3.8 1.27 6.2

5.8

0.7

0.6

0.7

0.3 8

0.25 0.1

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

Note

1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.

1.0

0.4

SOT109-1 99-12-27

03-02-19

076E07 MS-012

0.069 0.010

0.004

0.057

0.049 0.01 0.019

0.014

0.0100

0.0075

0.39

0.38

0.16

0.15 0.05

1.05

0.041

0.244

0.228

0.028

0.020

0.028

0.012

0.01

0.25

0.01 0.004

0.039

0.016

0 2.5 5 mm

scale

SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

Fig. 16. Package outline SOT109-1 (SO16)

Product data sheet Rev. 11.1 — 3 September 2020 15 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

UNIT A

1 A

2 A

3 b

p c D

(1) E

(1) e H

E L L

p Q Z y w v θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 0.21

0.05

1.80

1.65 0.25 0.38

0.25

0.20

0.09

6.4

6.0

5.4

5.2 0.65 1.25

7.9

7.6

1.03

0.63

0.9

0.7

1.00

0.55

0.13 0.2 0.1

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

SOT338-1 99-12-27

03-02-19

(1)

w M

v M A

1 8

16 9

detail X

(A )

MO-150

pin 1 index

0 2.5 5 mm

scale

SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1

max.

Fig. 17. Package outline SOT338-1 (SSOP16)

Product data sheet Rev. 11.1 — 3 September 2020 16 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

UNIT A

1 A

2 A

3 b

p c D

(1) E (2) (1)

e H

E L L

p Q Z y w v θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 0.15

0.05

0.95

0.80

0.30

0.19

0.2

0.1

5.1

4.9

4.5

4.3 0.65 6.6

6.2

0.4

0.3

0.40

0.06

0.13 0.1 0.2 1

DIMENSIONS (mm are the original dimensions)

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.

0.75

0.50

SOT403-1 MO-153 99-12-27

03-02-18

w M

0.25

1 8

16 9

detail X

(A )

v M A

0 2.5 5 mm

scale

TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1

max.

1.1

pin 1 index

Fig. 18. Package outline SOT403-1 (TSSOP16)

Product data sheet Rev. 11.1 — 3 September 2020 17 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

terminal 1

index area

0.5 1

A1 Eh

UNIT y e

0.2

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 3.6

3.4

2.15

1.85

2.6

2.4

1.15

0.85

2.5

0.30

0.18

0.05

0.00 0.05 0.1

DIMENSIONS (mm are the original dimensions)

SOT763-1 MO-241 - - - - - -

0.5

0.3

0.1

0.05

0 2.5 5 mm

scale

SOT763-1

DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;

16 terminals; body 2.5 x 3.5 x 0.85 mm

A(1)

max.

detail X

y1 C

2 7

15 10

B A

terminal 1

index area

A C

v M

w M

(1)

Note

1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.

(1)

02-10-17

03-01-27

Fig. 19. Package outline SOT763-1 (DHVQFN16)

Product data sheet Rev. 11.1 — 3 September 2020 18 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

13. Abbreviations

Table 9. Abbreviations

Acronym Abbreviation

CMOS Complementary Metal Oxide Semiconductor

DUT Device Under Test

ESD ElectroStatic Discharge

HBM Human Body Model

MM Machine Model

TTL Transistor-Transistor Logic

14. Revision history

Table 10. Revision history

Document ID Release date Data sheet status Change notice Supersedes

74HC_HCT123 v.11 20200903 Product data sheet - 74HC_HCT123 v.10

Modifications: •The format of this data sheet has been redesigned to comply with the identity guidelines of

Nexperia.

•Legal texts have been adapted to the new company name where appropriate.

•Section 1 and Section 2 updated.

•Table 4: Derating values for Ptot total power dissipation have been updated.

74HC_HCT123 v.10 20151203 Product data sheet - 74HC_HCT123 v.9

Modifications: •Type numbers 74HC123N and 74HCT123N (SOT38-4) removed.

74HC_HCT123 v.9 20150119 Product data sheet - 74HC_HCT123 v.8

Modifications: •Table 7: Power dissipation capacitance condition for 74HCT123 is corrected.

74HC_HCT123 v.8 20111216 Product data sheet - 74HC_HCT123 v.7

Modifications: •Legal pages updated.

74HC_HCT123 v.7 20110825 Product data sheet - 74HC_HCT123 v.6

74HC_HCT123 v.6 20110314 Product data sheet - 74HC_HCT123 v.5

74HC_HCT123 v.5 20090713 Product data sheet - 74HC_HCT123 v.4

74HC_HCT123 v.4 20060616 Product data sheet - 74HC_HCT123 v.3

74HC_HCT123 v.3 20040511 Product specification - 74HC_HCT123_CNV v.2

74HC_HCT123_CNV v.2 19980708 Product specification - -

Product data sheet Rev. 11.1 — 3 September 2020 19 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

15. Legal information

Data sheet status

Document status

[1][2]

Product

status [3]

Definition

Objective [short]

data sheet

Development This document contains data from

the objective specification for

product development.

Preliminary [short]

data sheet

Qualification This document contains data from

the preliminary specification.

Product [short]

data sheet

Production This document contains the product

specification.

[1] Please consult the most recently issued document before initiating or

completing a design.

[2] The term 'short data sheet' is explained in section "Definitions".

[3] The product status of device(s) described in this document may have

changed since this document was published and may differ in case of

multiple devices. The latest product status information is available on

the internet at https://www.nexperia.com.

Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. Nexperia does not give any representations or

warranties as to the accuracy or completeness of information included herein

and shall have no liability for the consequences of use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is

intended for quick reference only and should not be relied upon to contain

detailed and full information. For detailed and full information see the relevant

full data sheet, which is available on request via the local Nexperia sales

office. In case of any inconsistency or conflict with the short data sheet, the

full data sheet shall prevail.

Product specification — The information and data provided in a Product

data sheet shall define the specification of the product as agreed between

Nexperia and its customer, unless Nexperia and customer have explicitly

agreed otherwise in writing. In no event however, shall an agreement be

valid in which the Nexperia product is deemed to offer functions and qualities

beyond those described in the Product data sheet.

Disclaimers

Limited warranty and liability — Information in this document is believed

to be accurate and reliable. However, Nexperia does not give any

representations or warranties, expressed or implied, as to the accuracy

or completeness of such information and shall have no liability for the

consequences of use of such information. Nexperia takes no responsibility

for the content in this document if provided by an information source outside

of Nexperia.

In no event shall Nexperia be liable for any indirect, incidental, punitive,

special or consequential damages (including - without limitation - lost

profits, lost savings, business interruption, costs related to the removal

or replacement of any products or rework charges) whether or not such

damages are based on tort (including negligence), warranty, breach of

contract or any other legal theory.

Notwithstanding any damages that customer might incur for any reason

whatsoever, Nexperia’s aggregate and cumulative liability towards customer

for the products described herein shall be limited in accordance with the

Terms and conditions of commercial sale of Nexperia.

Right to make changes — Nexperia reserves the right to make changes

to information published in this document, including without limitation

specifications and product descriptions, at any time and without notice. This

document supersedes and replaces all information supplied prior to the

publication hereof.

Suitability for use — Nexperia products are not designed, authorized or

warranted to be suitable for use in life support, life-critical or safety-critical

systems or equipment, nor in applications where failure or malfunction

of an Nexperia product can reasonably be expected to result in personal

injury, death or severe property or environmental damage. Nexperia and its

suppliers accept no liability for inclusion and/or use of Nexperia products in

such equipment or applications and therefore such inclusion and/or use is at

the customer’s own risk.

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this

document, and as such is not complete, exhaustive or legally binding.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. Nexperia makes no representation

or warranty that such applications will be suitable for the specified use

without further testing or modification.

Customers are responsible for the design and operation of their applications

and products using Nexperia products, and Nexperia accepts no liability for

any assistance with applications or customer product design. It is customer’s

sole responsibility to determine whether the Nexperia product is suitable

and fit for the customer’s applications and products planned, as well as

for the planned application and use of customer’s third party customer(s).

Customers should provide appropriate design and operating safeguards to

minimize the risks associated with their applications and products.

Nexperia does not accept any liability related to any default, damage, costs

or problem which is based on any weakness or default in the customer’s

applications or products, or the application or use by customer’s third party

customer(s). Customer is responsible for doing all necessary testing for the

customer’s applications and products using Nexperia products in order to

avoid a default of the applications and the products or of the application or

use by customer’s third party customer(s). Nexperia does not accept any

liability in this respect.

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those

given in the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

Terms and conditions of commercial sale — Nexperia products are

sold subject to the general terms and conditions of commercial sale, as

published at http://www.nexperia.com/profile/terms, unless otherwise agreed

in a valid written individual agreement. In case an individual agreement is

concluded only the terms and conditions of the respective agreement shall

apply. Nexperia hereby expressly objects to applying the customer’s general

terms and conditions with regard to the purchase of Nexperia products by

customer.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or the

grant, conveyance or implication of any license under any copyrights, patents

or other industrial or intellectual property rights.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

Non-automotive qualified products — Unless this data sheet expressly

states that this specific Nexperia product is automotive qualified, the

product is not suitable for automotive use. It is neither qualified nor tested in

accordance with automotive testing or application requirements. Nexperia

accepts no liability for inclusion and/or use of non-automotive qualified

products in automotive equipment or applications.

In the event that customer uses the product for design-in and use in

automotive applications to automotive specifications and standards,

customer (a) shall use the product without Nexperia’s warranty of the

product for such automotive applications, use and specifications, and (b)

whenever customer uses the product for automotive applications beyond

Nexperia’s specifications such use shall be solely at customer’s own risk,

and (c) customer fully indemnifies Nexperia for any liability, damages or failed

product claims resulting from customer design and use of the product for

automotive applications beyond Nexperia’s standard warranty and Nexperia’s

product specifications.

Translations — A non-English (translated) version of a document is for

reference only. The English version shall prevail in case of any discrepancy

between the translated and English versions.

Trademarks

Notice: All referenced brands, product names, service names and

trademarks are the property of their respective owners.

Product data sheet Rev. 11.1 — 3 September 2020 20 / 21

Nexperia 74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

Contents

1. General description......................................................1

2. Features and benefits.................................................. 1

3. Ordering information....................................................2

4. Functional diagram.......................................................2

5. Pinning information......................................................4

5.1. Pinning.........................................................................4

5.2. Pin description............................................................. 4

6. Functional description................................................. 5

7. Limiting values............................................................. 5

8. Recommended operating conditions..........................6

9. Static characteristics....................................................6

10. Dynamic characteristics............................................ 8

10.1. Waveforms and test circuit...................................... 11

11. Application information............................................13

11.1. Timing component connections............................... 13

11.2. Power-up considerations..........................................13

11.3. Power-down considerations..................................... 14

12. Package outline........................................................ 15

13. Abbreviations............................................................ 19

14. Revision history........................................................19

15. Legal information......................................................20

For more information, please visit: http://www.nexperia.com

For sales office addresses, please send an email to: salesaddresses@nexperia.com

Date of release: 3 September 2020

Product data sheet Rev. 11.1 — 3 September 2020 21 / 21