74HC245/74AS245 - Octal Bus Transceiver IC

The 74HC245 is an octal bus transceiver IC designed for asynchronous two-way communication between data buses. The device inputs are compatible with standard CMOS outputs and with pull−up resistors, they are compatible with LSTTL output. This IC has 3 non-inverting outputs. It is a CMOS IC and is commonly used as data level converters between 5V and 3.3V systems.

Product Description of 74HC245 - Octal Bus Transceiver IC

Pin 2 to 9 represents the A data port and pin 11 to 18 represents the B data port.  The first pin,(pin 1) is the direction pin. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction control (DIR) input. The output-enable (/OE) input can be used to disable the device’s outputs so that the buses are effectively isolated.

Features of 74HC245 IC

• Octal bidirectional bus interface
• Non-inverting 3-state outputs
• High Noise Immunity Characteristic of CMOS Devices
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 A
• Operating Temperature: â€?5°C +125 °C