M54HC7245/7640/7643/7645 M74HC7245/7640/7643/7645 .
ST Microelectronics
M74HC7245 - OCTAL BUS TRANSCEIVER
M54HC7245/7640/7643/7645 M74HC7245/7640/7643/7645 OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING HC7640 INVERTING , HC7643 INVERTING/NON INVERT.
