SN74HC623 - Texas Instruments

SN74HC623 OCTAL BUS TRANSCEIVERS

ordering information These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation allows for maximum flexibility in timing. The ’HC623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEA.

Features

wo sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical. A8 GND B8 B7 B6 SN54HC623, SN74HC623 OCTAL BUS TRANSCEIVERS WITH 3ĆSTATE OUTPUTS SCLS149C
  – DECEMBER 1982
  – REVISED DECEMBER 2002 SN54HC623 . . . J OR W PACKAGE SN74HC623 . . . DW, N, OR NS PACKAGE (TOP VIEW) OEAB A1 A2 A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 OEBA 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 SN54HC623 . . . FK PACKAGE (TOP VIEW) A2 A1 OEAB VCC OEBA A3 3 2 1 20 19 4 18 B1 .