SN54AHCT174, SN74AHCT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS419F – JUNE 1998 – REVISED APRIL 2002
SN54AHCT174 . . . J OR W PACKAGE
SN74AHCT174 . . . D, DB, DGV, N, NS, OR PW PACKAGE
(TOP VIEW)
Inputs Are TTL-Voltage Compatible
Contain Six Flip-Flops With Single-Rail
Outputs
Applications Include:
– Buffer/Storage Registers
– Shift Registers
CLR
1Q
1D
2D
2Q
3D
3Q
GND
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
6Q
6D
5D
5Q
4D
4Q
CLK
– Pattern Generators
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
SN54AHCT174 . . . FK PACKAGE
(TOP VIEW)
description
These positive-edge-triggered D-type flip-flops
have a direct clear (CLR) input.
3
2
1 20 19
18 6D
1D
2D
NC
2Q
3D
4
5
6
7
8
Information at the data (D) inputs meeting the
setup time requirements is transferred to the
outputs on the positive-going edge of the clock
(CLK) pulse. Clock triggering occurs at a
particular voltage level and is not directly related
to the transition time of the positive-going edge of
CLK. When CLK is at either the high or low level,
the D input has no effect at the output.
17
5D
NC
5Q
4D
16
15
14
9 10 11 12 13
NC – No internal connection
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – N
SOIC – D
Tube
SN74AHCT174N
SN74AHCT174N
Tube
SN74AHCT174D
AHCT174
Tape and reel
Tape and reel
Tape and reel
Tape and reel
Tape and reel
Tube
SN74AHCT174DR
SN74AHCT174NSR
SN74AHCT174DBR
SN74AHCT174PWR
SN74AHCT174DGVR
SNJ54AHCT174J
SNJ54AHCT174W
SNJ54AHCT174FK
–40°C to 85°C
SOP – NS
AHCT174
SSOP – DB
TSSOP – PW
TVSOP – DGV
CDIP – J
HB174
HB174
HB174
SNJ54AHCT174J
SNJ54AHCT174W
SNJ54AHCT174FK
–55°C to 125°C
CFP – W
Tube
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 2002, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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