74HCT640 Octal transceiver; 3-state; inverting
74HCT640D Octal transceiver; 3-state; inverting
74HCT640D-T Single 8-Bit Inverting Bus Transceiver
74HCT640DB Octal transceiver; 3-state; inverting
74HCT640N Octal transceiver; 3-state; inverting
74HCT640PW Octal transceiver; 3-state; inverting
74HCT640U Octal bus transceiver; 3-state; inverting
74HCT643 Octal transceiver; 3-state; true/inverting
74HCT643D Octal bus transceiver; 3-state; true/inverting
74HCT643N Octal bus transceiver; 3-state; true/inverting
74HCT643U Octal bus transceiver; 3-state; true/inverting
74HCT646 Octal transceiver/register; 3-state
74HCT646D Octal transceiver/register; 3-state
74HCT646D-T Single 8-bit Bus Transceiver
74HCT646DB Octal transceiver/register; 3-state