54ABT574 Datasheet, PDF (1/10 Pages) National Semiconductor (TI) – Octal D-Type Flip-Flop with TRI-STATE Outputs

July 1998
54ABT574
Octal D-Type Flip-Flop with TRI-STATE^® Outputs
General Description
The ’ABT574 is an octal flip-flop with a buffered common
Clock (CP) and a buffered common Output Enable (OE). The
information presented to the D inputs is stored in the
flip-flops on the LOW-to-HIGH Clock (CP) transition.
The device is functionally identical to the ’ABT374 except for
the pinouts.
Features
n Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
n Useful as input or output port for microprocessors
n Functionally identical to ’ABT374
n TRI-STATE outputs for bus-oriented applications
n Output sink capability of 48 mA, source capability of
24 mA
n Guaranteed multiple output switching specifications
n Output switching specified for both 50 pF and 250 pF
loads
n Guaranteed simultaneous switching, noise level and
dynamic threshold performance
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
power up and power down cycle
n Non-destructive hot insertion capability
n Standard Microcircuit Drawing (SMD) 5962-9322001
Ordering Code
Military
54ABT574J/883
54ABT574W/883
54ABT574E/883
Package Number
J20A
W20A
E20A
Connection Diagrams
Package Description
20-Lead Ceramic Dual-In-Line
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
Pin Assignment for DIP and Flatpak
Pin Assignment
for LCC
DS100208-1
Pin Descriptions
DS100208-2
Pin
Names
D₀– D₇
CP
OE
O₀– O₇
Description
Data Inputs
Clock Pulse Input
(Active Rising Edge)
TRI-STATE Output Enable
Input (Active LOW)
TRI-STATE Outputs
FAST^® and TRI-STATE^® are registered trademarks of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100208
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