【NXP Semiconductors】74HC4040DB,计数器 IC 12-STAGE BINARY RIPPLE COUNTER
【NXP Semiconductors】74HC4040DB,112,IC 12STAGE BINARY RIPPLE 16SSOP
【NXP Semiconductors】74HC4040DB,118,IC 12STAGE BINARY RIPPLE 16SSOP
【NXP Semiconductors】74HC4040DB-T,计数器 IC 12-STAGE BINARY RIPPLE COUNTER
【NXP Semiconductors】74HC4040N,652,IC COUNTER 12STAGE BINARY 16DIP