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74HC374
Octal 3−State Non−Inverting
D Flip−Flop
High−Performance Silicon−Gate CMOS
The 74HC374 is identical in pinout to the LS374. The device inputs
are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
Data meeting the setup time is clocked to the outputs with the rising
edge of the clock. The Output Enable input does not affect the states of
the flip−flops, but when Output Enable is high, the outputs are forced
to the high−impedance state; thus, data may be stored even when the
outputs are not enabled.
The HC374 is identical in function to the HC574A which has the
input pins on the opposite side of the package from the output. This
device is similar in function to the HC534A which has inverting
outputs.
Features
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 mA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• ESD Performance: HBM > 2000 V; Machine Model > 200 V
• Chip Complexity: 266 FETs or 66.5 Equivalent Gates
• This is a Pb−Free Device
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MARKING
DIAGRAM
20
1
20
TSSOP−20
DT SUFFIX
CASE 948E
1
HC
374
ALYW G
G
HC374 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
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 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
March, 2007 − Rev. 0
1
Publication Order Number:
74HC374/D
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74HC374
LOGIC DIAGRAM
DATA
INPUTS
D0 3
D1 4
D2 7
D3 8
D4 13
D5 14
D6 17
D7 18
CLOCK 11
2 Q0
5 Q1
6 Q2
9 Q3
12 Q4
15 Q5
16 Q6
19 Q7
NONINVERTING
OUTPUTS
OUTPUT ENABLE 1
PIN 20 = VCC
PIN 10 = GND
PIN ASSIGNMENT
OUTPUT
ENABLE
Q0
D0
1
2
3
20 VCC
19 Q7
18 D7
D1 4
17 D6
Q1 5
Q2 6
D2 7
16 Q6
15 Q5
14 D5
D3 8
13 D4
Q3 9
GND 10
12 Q4
11 CLOCK
FUNCTION TABLE
Output
Enable
L
L
L
H
Inputs
Clock
L,H,
X
Output
DQ
HH
LL
X No Change
XZ
X = don’t care
Z = high impedance
ORDERING INFORMATION
Device
Package
Shipping†
74HC374DTR2G
TSSOP−20*
2500 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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2
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