관련 데이터시트
74190Synchronous Decade Up/Down Counters - National Semiconductor
741904 BIT SYNCHRONOUS UP/DOWN COUNTERS - SGS-THOMSON
74190Synchronous Up/Down Counters With Down/Up Mode Control - Texas Instruments
74191Synchronous 4-Bit Up/Down Counter with Mode Control - Fairchild Semiconductor
74191Synchronous Up/Down 4-Bit Binary Counter with Mode Control - National Semiconductor
741914 BIT SYNCHRONOUS UP/DOWN COUNTERS - SGS-THOMSON
74191Synchronous Up/Down Counters With Down/Up Mode Control - Texas Instruments
74192SYNCHRONOUS UP/DOWN DECADE(/BINARY) COUNTER - STMicroelectronics
74192Up / Down Decade Counter - National Semiconductor