74F657 Datasheet (Texas Instruments)

74F657, Octal Transceiver

The SN74F657 contains eight noninverting buffers with 3-state outputs and an 8-bit parity generator/checker.

It is intended for bus-oriented applications.

The buffers have a specified current sinking capability of 24 mA at the A port and 64 mA at the B port.

DW OR NT PACKAGE (TOP VIEW) T/R 1 A1 2

SN74F657 OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER AND 3-STATE OUTPUTS SDFS027A D3217, JANUARY 1989 REVISED OCTOBER 1993 Combines ′F245 and ′F280B Functions in One Package High-Impedance N-P-N Inputs for Reduced Loading (70 µA in Low and High States) High Output Drive and Light Bus Loading 3-State B Outputs Sink 64 mA and Source 15 mA Input Diodes for Termination Effects Package Options Include Plastic Small-O