SN54AHCT374, SN74AHCT374
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS241L – OCTOBER 1995 – REVISED JULY 2003
Inputs Are TTL-Voltage Compatible
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
Latch-Up Performance Exceeds 250 mA Per
JESD 17
– 1000-V Charged-Device Model (C101)
SN54AHCT374 . . . J OR W PACKAGE
SN74AHCT374 . . . DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54AHCT374 . . . FK PACKAGE
(TOP VIEW)
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
V
CC
8Q
8D
1
2
3
4
5
6
7
8
9
20
19
18
3
2
1
20 19
18
8D
7D
7Q
2D
2Q
3Q
3D
4D
4
5
6
7
8
17
16
17 7D
16 7Q
15 6Q
14 6D
13 5D
12 5Q
11 CLK
15 6Q
14
9 10 11 12 13
6D
GND 10
description/ordering information
The ’AHCT374 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed
specifically for driving highly capacitive or relatively low-impedance loads. This device is particularly suitable
for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus
lines without interface or pullup components.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
Tube
SN74AHCT374N
SN74AHCT374N
Tube
SN74AHCT374DW
SN74AHCT374DWR
SN74AHCT374NSR
SN74AHCT374DBR
SN74AHCT374PW
SN74AHCT374PWR
SOIC – DW
AHCT374
Tape and reel
Tape and reel
Tape and reel
Tube
SOP – NS
AHCT374
HB374
–40°C to 85°C
SSOP – DB
TSSOP – PW
HB374
Tape and reel
Tape and reel
Tube
TVSOP – DGV
CDIP – J
SN74AHCT374DGVR HB374
SNJ54AHCT374J
SNJ54AHCT374W
SNJ54AHCT374FK
SNJ54AHCT374J
–55°C to 125°C
CFP – W
Tube
SNJ54AHCT374W
SNJ54AHCT374FK
LCCC – FK
Tube
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
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