- 74HC640
Octal transceiver; 3-state; inverting - 74HC640D
Octal transceiver; 3-state; inverting - 74HC640D-T
Single 8-Bit Inverting Bus Transceiver - 74HC640DB
Octal transceiver; 3-state; inverting - 74HC640N
Octal transceiver; 3-state; inverting - 74HC640PW
Octal transceiver; 3-state; inverting - 74HC640U
Octal bus transceiver; 3-state; inverting