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
74HC643 Octal transceiver; 3-state; true/inverting
74HC643D Octal bus transceiver; 3-state; true/inverting
74HC643D-T 8-Bit Inverting/Non-Inverting Bus Trasceiver
74HC643N Octal bus transceiver; 3-state; true/inverting
74HC643U Octal bus transceiver; 3-state; true/inverting
74HC646 Octal transceiver/register; 3-state
74HC646D Octal transceiver/register; 3-state
74HC646D-T Single 8-bit Bus Transceiver