dm74ls293 National Semiconductor Corporation, dm74ls293 Datasheet

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dm74ls293

Manufacturer Part Number
dm74ls293
Description
4-bit Binary Counter
Manufacturer
National Semiconductor Corporation
Datasheet

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C 1995 National Semiconductor Corporation
DM74LS293 4-Bit Binary Counter
General Description
The ’LS293 counter is electrically and functionally identical
to the ’LS93 Only the arrangement of the terminals has
been changed for the ’LS293
Each of these monolithic counters contains four master-
slave flip-flops and additional gating to provide a divide-by-
two counter and a three-stage binary counter for which the
count cycle length is divide-by-eight
All of these counters have a gated zero reset
Connection Diagram
TL F 6423
Order Number DM74LS293M or DM74LS293N
See NS Package Number M14A or N14A
Dual-In-Line Package
To use the maximum count length (four-bit binary) of these
counters the B input is connected to the Q
input count pulses are applied to input A and the outputs are
as described in the appropriate function table
Features
Y
Y
Y
GND and V
respectively)
Typical power dissipation 45 mW
Count frequency 42 MHz
CC
on Corner Pins (Pins 7 and 14
TL F 6423 – 1
RRD-B30M105 Printed in U S A
A
output The
June 1989

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