The MC74HC245A is identical in pinout to the LS245. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The MC74HC245A is a 3-state noninverting transceiver that is used for 2-way asynchronous communication between data buses. The device has an active-low output enable pin, which is used to place the I/O ports into high-impedance states. The direction control determines whether data flows from A to B or from B to A.
Output Drive Capability: 15 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 mA
High Noise Immunity Characteristic of CMOS Devices
Chip Complexity: 308 FETs or 77 Equivalent Gates
Datasheet Available:Motorola MC74HC245A
SOIC 20 package. Manufactured by Motorola.