SN54HC574 Datasheet, PDF (1/16 Pages) Texas Instruments – OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54HC574, SN74HC574
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS148F – DECEMBER 1982 – REVISED AUGUST 2003
D Wide Operating Voltage Range of 2 V to 6 V
D High-Current 3-State Noninverting Outputs
Drive Bus Lines Directly or Up To 15 LSTTL
Loads
D Low Power Consumption, 80-µA Max I_CC
D Typical t_pd = 22 ns
D ±6-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Bus-Structured Pinout
description/ordering information
These octal edge-triggered D-type flip-flops
feature 3-state outputs designed specifically for
bus driving. They are particularly suitable for
implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.
SN54HC574 . . . J OR W PACKAGE
SN74HC574 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
OE 1
1D 2
2D 3
3D 4
4D 5
5D 6
6D 7
7D 8
8D 9
GND 10
20 V_CC
19 1Q
18 2Q
17 3Q
16 4Q
15 5Q
14 6Q
13 7Q
12 8Q
11 CLK
SN54HC574 . . . FK PACKAGE
(TOP VIEW)
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
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
increased drive provide the capability to drive bus
lines without interface or pullup components.
3D
3 2 1 20 19
4
18
2Q
4D 5
17 3Q
5D 6
16 4Q
6D 7
15 5Q
7D 8
14 6Q
9 10 11 12 13
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube of 20
SN74HC574N
SN74HC574N
SOIC – DW
Tube of 25
Reel of 2000
SN74HC574DW
SN74HC574DWR
HC574
–40°C to 85°C
SSOP – DB
SOP – NS
Reel of 2000
Reel of 2000
SN74HC574DBR
SN74HC574NSR
HC574
HC574
Tube of 70
SN74HC574PW
TSSOP – PW Reel of 2000 SN74HC574PWR HC574
Reel of 250
SN74HC574PWT
CDIP – J
Tube of 20
SNJ54HC574J
SNJ54HC574J
–55°C to 125°C CFP – W
Tube of 85
SNJ54HC574W
SNJ54HC574W
LCCC – FK
Tube of 55
SNJ54HC574FK
SNJ54HC574FK
† _{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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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.
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