SN54HC374, SN74HC374
OCTAL EDGETRIGGERED DTYPE FLIPFLOPS
WITH 3STATE OUTPUTS
SCLS141E DECEMBER 1982 REVISED AUGUST 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Wide Operating Voltage Range of 2 V to 6 V
D High-Current 3-State True Outputs Can
Drive Up To 15 LSTTL Loads
D Eight D-Type Flip-Flops in a Single Package
D Full Parallel Access for Loading
D Low Power Consumption, 80-A Max ICC
D Typical tpd = 14 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 A Max
32 1 20 19
910 11 1213
4
5
6
7
8
18
17
16
15
14
8D
7D
7Q
6Q
6D
2D
2Q
3Q
3D
4D
1D
1Q
OE
5Q
5D
V
8Q
4Q
GND
CLK
SN54HC374 ...FK PACKAGE
(TOP VIEW)
CC
SN54HC374 ...J OR W PACKAGE
SN74HC374 . . . DB, DW, N, NS, OR PW 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
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
description/ordering information
These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively
low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers.
The eight flip-flops of the ’HC374 devices are edge-triggered D-type flip-flops. On the positive transition of the
clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.
An output-enable (OE) input places 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 increased drive provide the capability to drive bus lines without
interface or pullup components.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube of 20
SN74HC374N
SOIC DW
Tube of 25
SN74HC374DW
HC374
SOIC DW
Reel of 2000
SN74HC374DWR
HC374
40
°C to 85°C
SOP NS
Reel of 2000
SN74HC374NSR
HC374
40 C to 85 C
SSOP DB
Reel of 2000
SN74HC374DBR
HC374
TSSOP PW
Tube of 2000
SN74HC374PWR
HC374
TSSOP PW
Reel of 250
SN74HC374PWT
HC374
CDIP J
Tube of 20
SNJ54HC374J
55
°C to 125°C
CFP W
Tube of 85
SNJ54HC374W
55 C to 125 C
LCCC FK
Tube of 55
SNJ54HC374FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
2003, Texas Instruments Incorporated
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.
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.
On products compliant to MILPRF38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.