SN54HCT574_16 Datasheet, PDF (1/18 Pages) Texas Instruments – OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54HCT574, SN74HCT574
OCTAL EDGEĆTRIGGERED DĆTYPE FLIPĆFLOPS
WITH 3ĆSTATE OUTPUTS
SCLS177E − MARCH 1984 − REVISED AUGUST 2003
D Operating Voltage Range of 4.5 V to 5.5 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 Inputs Are TTL-Voltage Compatible
D Bus-Structured Pinout
description/ordering information
SN54HCT574 . . . J OR W PACKAGE
SN74HCT574 . . . 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
These octal edge-triggered D-type flip-flops
feature 3-state outputs designed specifically for
bus driving. The ’HCT574 devices are particularly
suitable for implementing buffer registers, I/O
ports, bidirectional bus drivers, and working
registers.
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.
SN54HCT574 . . . FK PACKAGE
(TOP VIEW)
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
SN74HCT574N
SN74HCT574N
SOIC − DW
Tube of 25
Reel of 2000
SN74HCT574DW
SN74HCT574DWR
HCT574
−40°C to 85°C
SOP − NS
SSOP − DB
Reel of 2000
Reel of 2000
SN74HCT574NSR
SN74HCT574DBR
HCT574
HT574
Tube of 70
SN74HCT574PW
TSSOP − PW
Reel of 2000
Reel of 250
SN74HCT574PWR
SN74HCT574PWT
HT574
CDIP − J
Tube of 20
SNJ54HCT574J
SNJ54HCT574J
−55°C to 125°C CFP − W
Tube of 85
SNJ54HCT574W
SNJ54HCT574W
LCCC − FK
Tube of 55
SNJ54HCT574FK
SNJ54HCT574FK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
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