MC74HC74A
Dual D Flip-Flop with Set
and Reset
High−Performance Silicon−Gate CMOS
The MC74HC74A is identical in pinout to the LS74. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
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This device consists of two D flip−flops with individual Set, Reset,
and Clock inputs. Information at a D−input is transferred to the
corresponding Q output on the next positive going edge of the clock
input. Both Q and Q outputs are available from each flip−flop. The Set
and Reset inputs are asynchronous.
SOIC−14 NB
D SUFFIX
CASE 751A
TSSOP−14
DT SUFFIX
CASE 948G
PIN ASSIGNMENT
Features
RESET 1
DATA 1
1
2
14
13 RESET 2
12
V
• Output Drive Capability: 10 LSTTL Loads
CC
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
3
4
CLOCK 1
SET 1
DATA 2
• Low Input Current: 1.0 mA
11 CLOCK 2
10 SET 2
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the JEDEC Standard No. 7.0 A Requirements
• Chip Complexity: 128 FETs or 32 Equivalent Gates
Q1
Q1
5
6
7
9
8
Q2
Q2
GND
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
MARKING DIAGRAMS
• These Devices are Pb−Free, Halogen Free and are RoHS Compliant
14
HC74AG
AWLYWW
LOGIC DIAGRAM
1
RESET 1
1
5
6
SOIC−14 NB
2
3
DATA 1
Q1
Q1
CLOCK 1
14
HC
74A
ALYWG
G
4
SET 1
13
RESET 2
1
9
8
TSSOP−14
12
11
DATA 2
Q2
Q2
A
L, WL
Y, YY
= Assembly Location
= Wafer Lot
= Year
CLOCK 2
10
SET 2
W, WW = Work Week
PIN 14 = V
CC
PIN 7 = GND
G or G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
August, 2014 − Rev. 14
MC74HC74A/D