SN54AHC374, SN74AHC374
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS240I – OCTOBER 1995 – REVISED JULY 2003
Operating Range 2-V to 5.5-V V
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
CC
3-State Outputs Drive Bus Lines Directly
Latch-Up Performance Exceeds 250 mA Per
JESD 17
– 1000-V Charged-Device Model (C101)
SN54AHC374 . . . J OR W PACKAGE
SN74AHC374 . . . DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54AHC374 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
V
CC
3
2
1 20 19
18
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
2D
2Q
3Q
3D
4D
8D
7D
7Q
6Q
4
5
6
7
8
17
16
15
14 6D
9 10 11 12 13
GND
description/ordering information
The ’AHC374 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. These devices are 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) 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
SN74AHC374N
SN74AHC374N
Tube
SN74AHC374DW
SN74AHC374DWR
SN74AHC374NSR
SN74AHC374DBR
SN74AHC374PW
SN74AHC374PWR
SN74AHC374DGVR
SNJ54AHC374J
SOIC – DW
AHC374
Tape and reel
Tape and reel
Tape and reel
Tube
SOP – NS
AHC374
HA374
–40°C to 85°C
SSOP – DB
TSSOP – PW
HA374
Tape and reel
Tape and reel
Tube
TVSOP – DGV
CDIP – J
HA374
SNJ54AHC374J
SNJ54AHC374W
SNJ54AHC374FK
–55°C to 125°C
CFP – W
Tube
SNJ54AHC374W
SNJ54AHC374FK
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
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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