5-1
FACT DATA
The MC74AC/ACT175 is a high-speed quad D flip-flop. The device is useful for
general flip-flop requirements where clock and clear inputs are common. The
information on the D inputs is transferred to storage during the LOW -to-HIGH clock
transition. The device has a Master Reset to simultaneously clear all flip-flops, when
MR is low.
The MC74AC/ACT175 consists of four edge-triggered D flip-flops with individual
D inputs and Q and Q outputs. The Clock (CP) and Master Reset (MR) are common
to all flip-flops. Each D input’s state is transferred to the corresponding flip-flop’s
output following the LOW-to-HIGH Clock (CP) transition. A LOW input to the Master
Reset (MR) will force all Q outputs LOW and Q outputs HIGH independent of Clock
or Data inputs. The MC74AC/ACT175 is useful for applications where the Clock and
Master Reset are common to all storage elements.
•Outputs Source/Sink 24 mA
• ′ACT175 Has TTL Compatible Inputs
Pinout: 16-Lead Packages (Top View)
1516 14 13 12 11 10
21 34567
VCC 9
8
Q3Q3D3D2Q2Q2CP
MR Q0Q0D0D1Q1Q1GND
PIN NAMES
Data Inputs
Clock Pulse Input
Master Reset Input
Outputs
Outputs
D0 – D3
CP
MR
Q0 – Q3
Q0 – Q3
TRUTH TABLE
Inputs Outputs
MR CP D Qn Qn
L X X L H
H H H L
H L L H
H L X Qn Qn
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Transition of Clock
QUAD D FLIP-FLOP
WITH MASTER RESET
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
D0D1D2D3
Q0Q0Q1Q1Q2Q2Q3Q3
CP
MR
MC74AC175 MC74ACT175
5-2
FACT DATA
LOGIC DIAGRAM
MR CP D3D2D1D0
D
CPCD
Q
Q3
Q3
Q
Q2
Q2Q1
Q1Q0
Q0
D
CPCD
Q
Q
D
CPCD
Q
Q
D
CPCD
Q
Q
Please note that this diagram is provided only for the understanding of logic operations and should not be
used to estimate propagation delays.
MAXIMUM RATINGS*
Symbol Parameter Value Unit
VCC DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V
Vin DC Input Voltage (Referenced to GND) –0.5 to VCC + 0.5 V
Vout DC Output Voltage (Referenced to GND) –0.5 to VCC + 0.5 V
Iin DC Input Current, per Pin ± 20 mA
Iout DC Output Sink/Source Current, per Pin ± 50 mA
ICC DC VCC or GND Current per Output Pin ± 50 mA
Tstg Storage Temperature –65 to +150 °C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Min Unit
VCC
Supply Voltage
′AC 2.0 5.0 6.0
V
VCC
Supply Voltage
′ACT 4.5 5.0 5.5
V
Vin, Vout DC Input Voltage, Output Voltage (Ref. to GND) 0 VCC V
tr, tf
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
VCC @ 3.0 V 150
tr, tf
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
VCC @ 4.5 V 40 ns/V
r, tf
′AC Devices except Schmitt Inputs
VCC @ 5.5 V 25
tr, tf
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
VCC @ 4.5 V 10
ns/V
tr, tf
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
VCC @ 5.5 V 8.0
ns/V
TJJunction Temperature (PDIP) 140 °C
TAOperating Ambient Temperature Range –40 25 85 °C
IOH Output Current — HIGH –24 mA
IOL Output Current — LOW 24 mA
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V ; see individual Data Sheets for devices that dif fer from the typical input rise and fall times.
MC74AC175 MC74ACT175
5-3
FACT DATA
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74AC 74AC
Unit
Conditions
Symbol
Parameter
VCC
(V)
TA = +25°CTA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
VIH
Minimum High Level
Input Voltage
3.0 1.5 2.1 2.1 VOUT = 0.1 V
Input Voltage
4.5 2.25 3.15 3.15 V or VCC – 0.1 V
5.5 2.75 3.85 3.85
VIL
Maximum Low Level
Input Voltage
3.0 1.5 0.9 0.9 VOUT = 0.1 V
Input Voltage
4.5 2.25 1.35 1.35 V or VCC – 0.1 V
5.5 2.75 1.65 1.65
VOH
Minimum High Level
Output Voltage
3.0 2.99 2.9 2.9 IOUT = – 50 µA
Output Voltage
4.5 4.49 4.4 4.4 V
5.5 5.49 5.4 5.4
V
*VIN = VIL or VIH
3.0 2.56 2.46
V
– 12 mA
4.5 3.86 3.76
V
IOH – 24 mA
5.5 4.86 4.76 – 24 mA
VOL
Maximum Low Level
Output Voltage
3.0 0.002 0.1 0.1 IOUT = 50 µA
Output Voltage
4.5 0.001 0.1 0.1 V
5.5 0.001 0.1 0.1
V
*VIN = VIL or VIH
3.0 0.36 0.44
V
12 mA
4.5 0.36 0.44
V
IOH 24 mA
5.5 0.36 0.44 24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
µA
VI = VCC, GND
Leakage Current
5.5
±0.1
±1.0
µA
I = VCC, GND
IOLD
†Minimum Dynamic
Output Current
5.5 75 mA VOLD = 1.65 V Max
IOHD
Output Current
5.5 –75 mA VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
µA
VIN = VCC or GND
Supply Current
5.5
8.0
80
µA
IN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
AC CHARACTERISTICS
Symbol
Parameter
VCC*
(V)
74AC 74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
fmax
Maximum Clock
Frequency
3.3 149 139
MHz
3-3
fmax
Frequency
5.0 187 187
MHz
3-3
tPLH
Propagation Delay
CP to Qn or Qn
3.3 2.0 12.0 2.0 13.5
ns
3-6
tPLH
CP to Qn or Q
n
5.0 1.5 9.0 1.0 9.5
ns
3-6
tPHL
Propagation Delay
CP to Qn or Qn
3.3 2.5 13.0 2.0 14.5
ns
3-6
tPHL
CP to Qn or Q
n
5.0 1.5 9.5 1.5 10.5
ns
3-6
tPLH
Propagation Delay
MR to Qn
3.3 3.0 12.5 2.5 13.5
ns
3-6
tPLH
MR
to Qn
5.0 2.0 9.0 1.5 10.0
ns
3-6
tPHL
Propagation Delay
MR to Qn
3.3 3.0 11.0 2.5 12.5
ns
3-6
tPHL
MR
to Qn
5.0 2.0 8.5 1.5 9.0
ns
3-6
MC74AC175 MC74ACT175
5-4
FACT DATA
AC OPERATING REQUIREMENTS
Symbol
Parameter
VCC*
(V)
74AC 74AC
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ Guaranteed Minimum
ts
Set-up Time, HIGH or LOW 3.3 4.5 4.5
ns
3-9
ts
Dn to CP 5.0 3.0 3.0
ns
3-9
th
Hold Time, HIGH or LOW 3.3 1.0 1.0
ns
3-9
th
Dn to CP 5.0 1.0 1.0
ns
3-9
tw
MR Pulse Width Low 3.3 4.5 4.5
ns
3-6
tw
5.0 3.5 3.5
ns
3-6
tw
CP Pulse Width 3.3 4.5 5.0
ns
3-6
tw
5.0 3.5 3.5
ns
3-6
trec
Recovery TIme 3.3 0 0
ns
3-6
trec
MR to CP 5.0 0 0
ns
3-6
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74ACT 74ACT
Unit
Conditions
Symbol
Parameter
VCC
(V)
TA = +25°CTA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
VIH
Minimum High Level
Input Voltage
4.5 1.5 2.0 2.0
V
VOUT = 0.1 V
Input Voltage
5.5 1.5 2.0 2.0
V
or VCC – 0.1 V
VIL
Maximum Low Level
Input Voltage
4.5 1.5 0.8 0.8
V
VOUT = 0.1 V
Input Voltage
5.5 1.5 0.8 0.8
V
or VCC – 0.1 V
VOH
Minimum High Level
Output Voltage
4.5 4.49 4.4 4.4
V
IOUT = – 50 µA
Output Voltage
5.5 5.49 5.4 5.4
V
*VIN = VIL or VIH
4.5 3.86 3.76 V
IOH
– 24 mA
5.5 4.86 4.76
IOH
– 24 mA
VOL
Maximum Low Level
Output Voltage
4.5 0.001 0.1 0.1
V
IOUT = 50 µA
Output Voltage
5.5 0.001 0.1 0.1
V
*VIN = VIL or VIH
4.5 0.36 0.44 V
IOH
24 mA
5.5 0.36 0.44
IOH
24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
µA
VI = VCC, GND
Leakage Current
5.5
±0.1
±1.0
µA
I = VCC, GND
∆ICCT Additional Max. ICC/Input 5.5 0.6 1.5 mA VI = VCC – 2.1 V
IOLD
†Minimum Dynamic
Output Current
5.5 75 mA VOLD = 1.65 V Max
IOHD
Output Current
5.5 –75 mA VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
µA
VIN = VCC or GND
Supply Current
5.5
8.0
80
µA
IN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
MC74AC175 MC74ACT175
5-5
FACT DATA
AC CHARACTERISTICS
Symbol
Parameter
VCC*
(V)
74ACT 74ACT
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
fmax
Maximum Clock
Frequency
5.0
175
145
MHz
3-3
fmax
Frequency
5.0
175
145
MHz
3-3
tPLH
Propagation Delay
CP to Qn
5.0
2.0
10.0
1.5
11.0
ns
3-6
tPLH
CP to Qn
5.0
2.0
10.0
1.5
11.0
ns
3-6
tPHL
Propagation Delay
CP to Qn
5.0
2.0
11.0
1.5
12.0
ns
3-6
tPHL
CP to Qn
5.0
2.0
11.0
1.5
12.0
ns
3-6
tPHL
Propagation Delay
MR to Qn or Qn
5.0
2.0
9.5
1.5
10.5
ns
3-6
tPHL
MR
to Qn or Qn
5.0
2.0
9.5
1.5
10.5
ns
3-6
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
VCC*
(V)
74ACT 74ACT
Unit
Fig.
No.
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ Guaranteed Minimum
ts(H)
Set-up Time, HIGH or LOW
5.0
2.0
2.5
2.0
2.5
ns
3-9
(L)
Dn to CP
5.0
2.5 2.5
ns
3-9
th
Hold Time, HIGH or LOW
5.0
1.0
1.0
ns
3-9
th
Dn to CP
5.0
1.0
1.0
ns
3-9
tw
MR Pulse Width, LOW
5.0
3.0
4.0
ns
3-6
tw
5.0
3.0
4.0
ns
3-6
tw
CP Pulse Width,
5.0
3.0
3.5
ns
3-6
tw
HIGH or LOW
5.0
3.0
3.5
ns
3-6
trec
Recovery TIme
5.0
0
0
ns
3-6
trec
MR to CP
5.0
0
0
ns
3-6
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
CAPACITANCE
Symbol Parameter Value
Typ Unit Test Conditions
CIN Input Capacitance 4.5 pF VCC = 5.0 V
CPD Power Dissipation Capacitance 45.0 pF VCC = 5.0 V
MC74AC175 MC74ACT175
5-6
FACT DATA
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC DIP PACKAGE
CASE 648–08
ISSUE R
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
1 8
16 9
SEATING
PLANE
F
J
M
RX 45
_
G
8 PLP
–B–
–A–
M
0.25 (0.010) B S
–T–
D
K
C
16 PL
S
B
M
0.25 (0.010) A S
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A9.80 10.00 0.386 0.393
B3.80 4.00 0.150 0.157
C1.35 1.75 0.054 0.068
D0.35 0.49 0.014 0.019
F0.40 1.25 0.016 0.049
G1.27 BSC 0.050 BSC
J0.19 0.25 0.008 0.009
K0.10 0.25 0.004 0.009
M0 7 0 7
P5.80 6.20 0.229 0.244
R0.25 0.50 0.010 0.019
____
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
–A–
B
FC
S
HGD
J
L
M
16 PL
SEATING
1 8
916
K
PLANE
–T–
M
A
M
0.25 (0.010) T
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.740 0.770 18.80 19.55
B0.250 0.270 6.35 6.85
C0.145 0.175 3.69 4.44
D0.015 0.021 0.39 0.53
F0.040 0.70 1.02 1.77
G0.100 BSC 2.54 BSC
H0.050 BSC 1.27 BSC
J0.008 0.015 0.21 0.38
K0.110 0.130 2.80 3.30
L0.295 0.305 7.50 7.74
M0 10 0 10
S0.020 0.040 0.51 1.01
____
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MC74AC175/D
*MC74AC175/D*
◊
