HD74LS193
Synchronous Up/Down 4-bit Binary Counters (Hitachi Semiconductor)
HD74LS193
Synchronous Up / Down Decade Counter (Renesas)
HD74LS190
Synchronous Up/Down Decade Counters (Hitachi Semiconductor)
HD74LS190
Synchronous Up / Down Decade Counter (Renesas)
HD74LS190P
Synchronous Up / Down Decade Counter (Renesas)
HD74LS191
Synchronous Up/Down 4-bit Binary Counters (Hitachi Semiconductor)
HD74LS191
Synchronous Up / Down 4-bit Binary Counter (Renesas)
HD74LS191P
Synchronous Up / Down 4-bit Binary Counter (Renesas)
HD74LS192
Synchronous Up/Down Decade Counters (Hitachi Semiconductor)
HD74LS192
Synchronous Up / Down Decade Counter (Renesas)