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DM54161 - Synchronous 4-Bit Counters

Description

These synchronous presettable counters feature an internal carry look-ahead for application in high-speed counting designs The 161 and 163 are 4-bit binary counters The carry output is decoded by means of a NOR gate thus preventing spikes during the normal counting mode of operation Synchronous oper

Features

  • Y Y Y Y Y Y Synchronously programmable Internal look-ahead for fast counting Carry output for n-bit cascading Synchronous counting Load control line Diode-clamped inputs Connection Diagram Dual-In-Line Package TL F 6551.
  • 1 Order Number DM54161J DM54161W DM74161N or DM74163N See NS Package Number J16A N16E or W16A C1995 National Semiconductor Corporation TL F 6551 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required ple.

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Datasheet Details

Part number DM54161
Manufacturer National Semiconductor
File Size 176.51 KB
Description Synchronous 4-Bit Counters
Datasheet download datasheet DM54161 Datasheet
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DM54161 DM74161 DM74163 Synchronous 4-Bit Counters October 1992 DM54161 DM74161 DM74163 Synchronous 4-Bit Counters General Description These synchronous presettable counters feature an internal carry look-ahead for application in high-speed counting designs The 161 and 163 are 4-bit binary counters The carry output is decoded by means of a NOR gate thus preventing spikes during the normal counting mode of operation Synchronous operation is provided by having all flipflops clocked simultaneously so that the outputs change coincident with each other when so instructed by the countenable inputs and internal gating This mode of operation eliminates the output counting spikes which are normally associated with asynchronous (ripple clock) counters A buffered clock input triggers the four flip-
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