DM74LS293 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 4-Bit Binary Counter

June 1989
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
To use the maximum count length (four-bit binary) of these
counters the B input is connected to the Q_A output The
input count pulses are applied to input A and the outputs are
as described in the appropriate function table
Features
Y _{GND and VCC on Corner Pins (Pins 7 and 14}
respectively)
Y _{Typical power dissipation 45 mW}
Y _{Count frequency 42 MHz}
Connection Diagram
Dual-In-Line Package
Order Number DM74LS293M or DM74LS293N
See NS Package Number M14A or N14A
TL F 6423 – 1
C1995 National Semiconductor Corporation TL F 6423
RRD-B30M105 Printed in U S A