74VHC123AFT,74VHC221AFT
1
CMOS Digital Integrated Circuits Silicon Monolithic
74VHC123AFT,74VHC221AFT
74VHC123AFT,74VHC221AFT
74VHC123AFT,74VHC221AFT
74VHC123AFT,74VHC221AFT
Start of commercial production
2013-05
1.
1.
1.
1. Functional Description
Functional Description
Functional Description
Functional Description
• Dual Monostable Multivibrator
74VHC123AFT: Retriggerable
74VHC221AFT: Non-Retriggerable
2.
2.
2.
2. General
General
General
General
The 74VHC123A/221AFT are high speed CMOS MONOSTABLE MULTIVIBRATOR fabricated with silicon
gate C2MOS technology.
There are two trigger inputs, A input (negative edge), and B input (positive edge). These inputs are valid for a
slow rise/fall time signal (tr = tf = 1 s) as they are schmitt trigger inputs. This device may also be triggered by
using CLR input (positive edge).
After triggering, the output stays in a MONOSTABLE state for a time period determined by the external resistor
and capacitor (RX, CX). A low level at the CLR input breaks this state.
Limits for CX and RX are:
External capacitor, CX: No limit
External resistor, RX: VCC = 2.0 V more than 5 kΩ
VCC ≥ 3.0 V more than 1 kΩ
An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply
voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up.
This circuit prevents device destruction due to mismatched supply and input voltages.
3.
3.
3.
3. Features (Note)
Features (Note)
Features (Note)
Features (Note)
(1) AEC-Q100 (Rev. H) (Note 1)
(2) Wide operating temperature range: Topr = -40 to 125
(3) High speed: Propagation delay time = 8.1 ns (typ.) at VCC = 5 V
(4) Low power dissipation:
Standby state: 4.0 µA (max) at Ta = 25
Active state: 750 µA (max) at Ta = 25
(5) High noise immunity: VNIH = VNIL = 28 % VCC (min)
(6) Power-down protection is provided on all inputs.
(7) Balanced propagation delays: tPLH ≈ tPHL
(8) Wide operating voltage range: VCC(opr) = 2.0 V to 5.5 V
(9) Pin and function compatible with 74HC123,74HC221 type.
Note: In the case of using only one circuit,CLR should be tied to GND, RX/CXCXQQ should be tied to OPEN,
the other inputs should be tied to VCC or GND.
Note 1: This device is compliant with the reliability requirements of AEC-Q100. For details, contact your Toshiba sales
representative.
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
2
4.
4.
4.
4. Packaging
Packaging
Packaging
Packaging
TSSOP16B
5.
5.
5.
5. Pin Assignment
Pin Assignment
Pin Assignment
Pin Assignment
6.
6.
6.
6. Marking
Marking
Marking
Marking
74VHC123AFT 74VHC221AFT
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
3
7.
7.
7.
7. IEC Logic Symbol
IEC Logic Symbol
IEC Logic Symbol
IEC Logic Symbol
74VHC123AFT 74VHC221AFT
8.
8.
8.
8. Truth Table
Truth Table
Truth Table
Truth Table
X: Don't care
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
4
9.
9.
9.
9. Block Diagram
Block Diagram
Block Diagram
Block Diagram
(1) CX, RX, DX are external
Capacitor, resistor, and diode, respectively.
(2) External clamping diode, DX;
The external capacitor is charged to VCC level in the wait state, i.e. when no trigger is applied.
If the supply voltage is turned off, CX is discharges mainly through the internal (parasitic) diode. If CX is
sufficiently large and VCC drops rapidly, there will be some possibility of damaging the IC through in
rush current or latch-up. If the capacitance of the supply voltage filter is large enough and VCC drops
slowly, the in rush current is automatically limited and damage to the IC is avoided.
The maximum value of forward current through the parasitic diode is ±20 mA.
In the case of a large CX, the limit of fall time of the supply voltage is determined as follows:
tf ≥ (VCC - 0.7) CX/20 mA
(tf is the time between the supply voltage turn off and the supply voltage reaching 0.4 VCC.)
In the even a system does not satisfy the above condition, an external clamping diode (DX) is needed to
protect the IC from rush current.
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
5
10.
10.
10.
10. System Diagram
System Diagram
System Diagram
System Diagram
Fig.
Fig.
Fig.
Fig. 10.1
10.1
10.1
10.1 74VHC123AFT
74VHC123AFT
74VHC123AFT
74VHC123AFT
Fig.
Fig.
Fig.
Fig. 10.2
10.2
10.2
10.2 74VHC221AFT
74VHC221AFT
74VHC221AFT
74VHC221AFT
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
6
11.
11.
11.
11. Timing Chart
Timing Chart
Timing Chart
Timing Chart
Fig.
Fig.
Fig.
Fig. 11.1
11.1
11.1
11.1 74VHC123AFT
74VHC123AFT
74VHC123AFT
74VHC123AFT
Fig.
Fig.
Fig.
Fig. 11.2
11.2
11.2
11.2 74VHC221AFT
74VHC221AFT
74VHC221AFT
74VHC221AFT
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
7
12.
12.
12.
12. Functional Description
Functional Description
Functional Description
Functional Description
(1) Standby state
The external capacitor (CX) is fully charged to VCC in the stand-by state. That means, before triggering,
the QP and QN transistors which are connected to the RX/CX node are in the off state. Two comparators
that relate to the timing of the output pulse, and two reference voltage supplies turn off. The total supply
current is only leakage current.
(2) Trigger operation
Trigger operation is effective in any of the following three cases. First, the condition where the A input is
low, and the B input has a rising signal; second, where the B input is high, and the A input has a falling
signal; and third, where the A input is low and the B input is high, and the CLR input has a rising signal.
After a trigger becomes effective, comparators C1 and C2 start operating, and QN is turned on. The
external capacitor discharges through QN. The voltage level at the RX/CX node drops. If the RX/CX voltage
level falls to the internal reference voltage VrefL, the output of C1 becomes low. The flip-flop is then reset
and QN turns off. At that moment C1 stops but C2 continues operating.
After QN turns off, the voltage at the RX/CX node starts rising at a rate determined by the time constant
of external capacitor CX and resistor RX.
Upon triggering, output Q becomes high, following some delay time of the internal F/F and gates. It stays
high even if the voltage of RX/CX changes from falling to rising. When RX/CX reaches the internal
reference voltage VrefH, the output of C2 becomes low, the output Q goes low and C2 stops its operation.
That means, after triggering, when the voltage level of the RX/CX node reaches VrefH, the IC returns to
its MONOSTABLE state.
With large values of CX and RX, and ignoring the discharge time of the capacitor and internal delays of
the IC, the width of the output pulse, twOUT, is as follows:
twOUT = 1.0 × CX × RX
(3) Retrigger operation
When a new trigger is applied to either input A or B while in the MONOSTABLE state, it is effective only
if the IC is charging CX. The voltage level of the RX/CX node then falls to VrefL level again. Therefore the
Q output stays high if the next trigger comes in before the time period set by CX and RX.
If the new trigger is very close to previous trigger, such as an occurrence during the discharge cycle, it
will have no effect.
The minimum time for a trigger to be effective 2 nd trigger, trr (min), depends on VCC and
CX.(74VHC123AFT)
(4) Reset operation
In normal operation, the CLR input is held high. If CLR is low, a trigger has no effect because the Q
output is held low and the trigger control F/F is reset. Also, QP turns on and CX is charged rapidly to VCC.
This means if CLR is set low, the IC goes into a wait state.
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
8
13.
13.
13.
13. Absolute Maximum Ratings (Note)
Absolute Maximum Ratings (Note)
Absolute Maximum Ratings (Note)
Absolute Maximum Ratings (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Input diode current
Output diode current
Output current
VCC/ground current
Power dissipation
Storage temperature
Symbol
VCC
VIN
VOUT
IIK
IOK
IOUT
ICC
PD
Tstg
Note
(Note 1)
Rating
-0.5 to 7.0
-0.5 to 7.0
-0.5 to VCC + 0.5
-20
±20
±25
±50
180
-65 to 150
Unit
V
V
V
mA
mA
mA
mA
mW
Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even
destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even
if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report
and estimated failure rate, etc).
Note 1: 180 mW in the range of Ta = -40 to 85 . From Ta = 85 to 125 a derating factor of -3.25 mW/ shall be
applied until 50 mW.
14.
14.
14.
14. Operating Ranges (Note)
Operating Ranges (Note)
Operating Ranges (Note)
Operating Ranges (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Operating temperature
Input rise and fall times
External capacitor
External resistor
Symbol
VCC
VIN
VOUT
Topr
dt/dv
CX
RX
Note
(Note 1)
(Note 1)
Test Condition
VCC = 3.3 ± 0.3 V
VCC = 5 ± 0.5 V
VCC = 2.0 V
VCC ≥ 3.0 V
Rating
2.0 to 5.5
0 to 5.5
0 to VCC
-40 to 125
0 to 100
0 to 20
No limitation
≥ 5 k
≥ 1 k
Unit
V
V
V
ns/V
F
Ω
Note: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Note 1: The maximum allowable values of CX and RX are a function of leakage of capacitor CX, the leakage of
74VHC123A/221AFT, and leakage due to board layout and surface resistance.
Susceptibility to externally induced noise signals may occur for RX > 1 MΩ.
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
9
15.
15.
15.
15. Electrical Characteristics
Electrical Characteristics
Electrical Characteristics
Electrical Characteristics
15.1.
15.1.
15.1.
15.1. DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, Ta
a
a
a = 25
= 25
= 25
= 25
)
)
)
)
Characteristics
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Input leakage current
RX/CX terminal OFF-state
current
Quiescent supply current
Active-state supply current
(per circuit)
Symbol
VIH
VIL
VOH
VOL
IIN
IIN
ICC
ICC(opr)
Test Condition
VIN = VIH or VIL
VIN = VIH or VIL
VIN = 5.5 V or GND
VIN = VCC or GND
VIN = VCC or GND
VIN = VCC or GND
RX/CX = 0.5 VCC
IOH = -50 µA
IOH = -4 mA
IOH = -8 mA
IOL = 50 µA
IOL = 4 mA
IOL = 8 mA
VCC (V)
2.0
3.0 to 5.5
2.0
3.0 to 5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
0 to 5.5
5.5
5.5
3.0
4.5
5.5
Min
1.50
VCC × 0.7
1.9
2.9
4.4
2.58
3.94
Typ.
2.0
3.0
4.5
0.0
0.0
0.0
160
380
560
Max
0.50
VCC × 0.3
0.1
0.1
0.1
0.36
0.36
±0.1
±0.25
4.0
250
500
750
Unit
V
V
V
V
µA
µA
µA
µA
15.2.
15.2.
15.2.
15.2. DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, Ta
a
a
a = -40 to 85
= -40 to 85
= -40 to 85
= -40 to 85
)
)
)
)
Characteristics
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Input leakage current
RX/CX terminal OFF-state current
Quiescent supply current
Active-state supply current
(per circuit)
Symbol
VIH
VIL
VOH
VOL
IIN
IIN
ICC
ICC(opr)
Test Condition
VIN = VIH or VIL
VIN = VIH or VIL
VIN = 5.5 V or GND
VIN = VCC or GND
VIN = VCC or GND
VIN = VCC or GND
RX/CX = 0.5 VCC
IOH = -50 µA
IOH = -4 mA
IOH = -8 mA
IOL = 50 µA
IOL = 4 mA
IOL = 8 mA
VCC (V)
2.0
3.0 to 5.5
2.0
3.0 to 5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
0 to 5.5
5.5
5.5
3.0
4.5
5.5
Min
1.50
VCC × 0.7
1.9
2.9
4.4
2.48
3.80
Max
0.50
VCC × 0.3
0.1
0.1
0.1
0.44
0.44
±1.0
±2.5
40.0
280
650
975
Unit
V
V
V
V
µA
µA
µA
µA
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
10
15.3.
15.3.
15.3.
15.3. DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, T
DC Characteristics (Unless otherwise specified, Ta
a
a
a = -40 to 125
= -40 to 125
= -40 to 125
= -40 to 125
)
)
)
)
Characteristics
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Input leakage current
RX/CX terminal OFF-state
current
Quiescent supply current
Active-state supply current
(per circuit)
Symbol
VIH
VIL
VOH
VOL
IIN
IIN
ICC
ICC(opr)
Test Condition
VIN = VIH or VIL
VIN = VIH or VIL
VIN = 5.5 V or GND
VIN = VCC or GND
VIN = VCC or GND
VIN = VCC or GND
RX/CX = 0.5 VCC
IOH = -50 µA
IOH = -4 mA
IOH = -8 mA
IOL = 50 µA
IOL = 4 mA
IOL = 8 mA
VCC (V)
2.0
3.0 to 5.5
2.0
3.0 to 5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
0 to 5.5
5.5
5.5
3.0
4.5
5.5
Min
1.50
VCC × 0.7
1.9
2.9
4.4
2.40
3.70
Max
0.50
VCC × 0.3
0.1
0.1
0.1
0.55
0.55
±2.0
±10.0
80.0
280
650
975
Unit
V
V
V
V
µA
µA
µA
µA
15.4.
15.4.
15.4.
15.4. Timing Requirements (Unless otherwise specified, T
Timing Requirements (Unless otherwise specified, T
Timing Requirements (Unless otherwise specified, T
Timing Requirements (Unless otherwise specified, Ta
a
a
a = 25
= 25
= 25
= 25
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Minimum pulse width
Minimum pulse width (CLR)
Minimum retrigger time
Part Number
74VHC123AFT
Symbol
tw(L),tw(H)
tw(L)
trr
Test Condition
RX = 1 kΩ, CX = 100 pF
RX = 1 kΩ, CX = 0.01 µF
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Typ.
60
39
1.5
1.2
Limit
5.0
5.0
5.0
5.0
Unit
ns
ns
ns
µs
15.5.
15.5.
15.5.
15.5. Timing Requirements
Timing Requirements
Timing Requirements
Timing Requirements
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, Ta
a
a
a = -40 to 85
= -40 to 85
= -40 to 85
= -40 to 85
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Minimum pulse width
Minimum pulse width (CLR)
Symbol
tw(L),tw(H)
tw(L)
Test Condition
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Limit
5.0
5.0
5.0
5.0
Unit
ns
ns
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
11
15.6.
15.6.
15.6.
15.6. Timing Requirements
Timing Requirements
Timing Requirements
Timing Requirements
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, Ta
a
a
a = -40 to 125
= -40 to 125
= -40 to 125
= -40 to 125
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Minimum pulse width
Minimum pulse width (CLR)
Symbol
tw(L),tw(H)
tw(L)
Test Condition
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Limit
5.0
5.0
5.0
5.0
Unit
ns
ns
15.7.
15.7.
15.7.
15.7. AC Characteristics (Unless otherwise specified, T
AC Characteristics (Unless otherwise specified, T
AC Characteristics (Unless otherwise specified, T
AC Characteristics (Unless otherwise specified, Ta
a
a
a = 25
= 25
= 25
= 25
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Propagation delay time
(A, B-Q, Q)
Propagation delay time
(CLR trigger-Q, Q)
Propagation delay time
(CLR-Q, Q)
Output pulse width
Output pulse width error between
circuits (in same package)
Input capacitance
Power dissipation capacitance
Symbol
tPLH,tPHL
tPLH,tPHL
tPLH,tPHL
twOUT
∆twOUT
CIN
CPD
Note
(Note 1)
Test Condition
CX = 28 pF,
RX = 2 kΩ
CX = 0.01 µF,
RX = 10 kΩ
CX = 0.1 µF,
RX = 10 kΩ
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
CL (pF)
15
50
15
50
15
50
15
50
15
50
15
50
50
50
50
Min
90
90
0.9
0.9
Typ.
13.4
15.9
8.1
9.6
14.5
17.0
8.7
10.2
10.3
12.8
6.3
7.8
160
133
100
100
1.0
1.0
±1
4
73
Max
20.6
24.1
12.0
14.0
22.4
25.9
12.9
14.9
15.8
19.3
9.4
11.4
240
200
110
110
1.1
1.1
10
Unit
ns
ns
ns
ns
µs
ms
%
pF
pF
Note 1: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current
consumption without load. Average operating current can be obtained by the equation.
ICC(opr) = CPD × VCC × fIN + ICC' × Duty/100 + ICC/2 (per circuit),
(ICC': Active supply current),
(Duty: %)
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
12
15.8.
15.8.
15.8.
15.8. AC Characteristics
AC Characteristics
AC Characteristics
AC Characteristics
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, Ta
a
a
a = -40 to 85
= -40 to 85
= -40 to 85
= -40 to 85
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Propagation delay time
(A, B-Q, Q)
Propagation delay time
(CLR trigger-Q, Q)
Propagation delay time
(CLR-Q, Q)
Output pulse width
Input capacitance
Symbol
tPLH,tPHL
tPLH,tPHL
tPLH,tPHL
twOUT
CIN
Test Condition
CX = 28 pF,
RX = 2 kΩ
CX = 0.01 µF,
RX = 10 kΩ
CX = 0.1 µF,
RX = 10 kΩ
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
CL (pF)
15
50
15
50
15
50
15
50
15
50
15
50
50
50
50
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
90
90
0.9
0.9
Max
24.0
27.5
14.0
16.0
26.0
29.5
15.0
17.0
18.5
22.0
11.0
13.0
300
240
110
110
1.1
1.1
10
Unit
ns
ns
ns
ns
µs
ms
pF
15.9.
15.9.
15.9.
15.9. AC Characteristics
AC Characteristics
AC Characteristics
AC Characteristics
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, Ta
a
a
a = -40 to 125
= -40 to 125
= -40 to 125
= -40 to 125
, Input: t
, Input: t
, Input: t
, Input: tr
r
r
r = t
= t
= t
= tf
f
f
f = 3 ns)
= 3 ns)
= 3 ns)
= 3 ns)
Characteristics
Propagation delay time
(A, B-Q, Q)
Propagation delay time
(CLR trigger-Q, Q)
Propagation delay time
(CLR-Q, Q)
Output pulse width
Input capacitance
Symbol
tPLH,tPHL
tPLH,tPHL
tPLH,tPHL
twOUT
CIN
Test Condition
CX = 28 pF,
RX = 2 kΩ
CX = 0.01 µF,
RX = 10 kΩ
CX = 0.1 µF,
RX = 10 kΩ
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
CL (pF)
15
50
15
50
15
50
15
50
15
50
15
50
50
50
50
50
50
50
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
85
85
0.85
0.85
Max
27.0
30.5
15.5
17.5
29.0
32.5
17.0
19.0
21.0
24.5
12.5
14.5
300
240
115
115
1.15
1.15
10
Unit
ns
ns
ns
ns
µs
ms
pF
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
13
16.
16.
16.
16. Characteristics Curves (Note)
Characteristics Curves (Note)
Characteristics Curves (Note)
Characteristics Curves (Note)
Fig.
Fig.
Fig.
Fig. 16.1
16.1
16.1
16.1 t
t
t
twOUT
wOUT
wOUT
wOUT - C
- C
- C
- CX
X
X
X (typ.)
(typ.)
(typ.)
(typ.) Fig.
Fig.
Fig.
Fig. 16.2
16.2
16.2
16.2 t
t
t
trr
rr
rr
rr - V
- V
- V
- VCC
CC
CC
CC (typ.)
(typ.)
(typ.)
(typ.)
(74VHC123AFT)
(74VHC123AFT)
(74VHC123AFT)
(74VHC123AFT)
Fig.
Fig.
Fig.
Fig. 16.3
16.3
16.3
16.3 Output Pulse Width Constant K - Supply
Output Pulse Width Constant K - Supply
Output Pulse Width Constant K - Supply
Output Pulse Width Constant K - Supply
Voltage (typ.)
Voltage (typ.)
Voltage (typ.)
Voltage (typ.)
Note: The above characteristics curves are presented for reference only and not guaranteed by production test,
unless otherwise noted.
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
14
17.
17.
17.
17. Internal Equivalent Circuit
Internal Equivalent Circuit
Internal Equivalent Circuit
Internal Equivalent Circuit
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
15
Package Dimensions
Package Dimensions
Package Dimensions
Package Dimensions
Unit: mm
Weight: 0.055 g (typ.)
Package Name(s)
Nickname: TSSOP16B
2017-03-08
Rev.7.0
©2016 Toshiba Corporation
74VHC123AFT,74VHC221AFT
16
RESTRICTIONS ON PRODUCT USE
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RESTRICTIONS ON PRODUCT USE
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AS A RESULT OF NONCOMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS.
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2017-03-08
Rev.7.0
©2016 Toshiba Corporation
