DM74AS161 Synchronous 4-Bit Counter with Asynchronous Clear Synchronous 4-Bit Counter
DM74AS161J/A+ Synchronous Up Counter
DM74AS161M Synchronous 4-Bit Counter with Asynchronous Clear Synchronous 4-Bit Counter
DM74AS161MX Synchronous Up Counter
DM74AS161N Synchronous 4-Bit Counter with Asynchronous Clear Synchronous 4-Bit Counter
DM74AS161N/A+ Synchronous Up Counter
DM74AS161N/B+ Synchronous Up Counter