SN54HC174, SN74HC174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS119B – DECEMBER 1982 – REVISED MAY 1997
SN54HC174 . . . J OR W PACKAGE
SN74HC174 . . . D OR N PACKAGE
(TOP VIEW)
Contain Six Flip-Flops With Single-Rail
Outputs
Applications Include:
– Buffer/Storage Registers
– Shift Registers
CLR
1Q
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
1D
2D
Package Options Include Plastic
Small-Outline (D) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
2Q
3D
3Q
GND
description
SN54HC174 . . . FK PACKAGE
(TOP VIEW)
These monolithic positive-edge-triggered D-type
flip-flops have a direct clear (CLR) input.
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.
3
2
1
20 19
18 6D
1D
2D
NC
2Q
3D
4
5
6
7
8
17
16
15
14
5D
NC
5Q
4D
9 10 11 12 13
The SN54HC174 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HC174 is characterized for
operation from –40°C to 85°C.
NC – No internal connection
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUT
Q
CLR
L
CLK
D
X
H
L
X
↑
L
H
L
H
H
↑
H
L
X
Q
0
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 1997, Texas Instruments Incorporated
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