SNJ54HC245FK

The SNJ54HC245FK from Texas Instruments is an octal bus transceiver designed for asynchronous two-way communication between data buses. It features 8 channels with CMOS input and output types, providing balanced outputs and high-speed operation with typical propagation delays of 12 ns. The device supports a wide operating voltage range from 2 V to 6 V and offers high-current 3-state outputs capable of driving bus lines directly or up to 15 LSTTL loads.

This transceiver is suitable for applications requiring direct bus line communication. It has a low power consumption of 80 µA maximum Icc and a low input current of 1 µA maximum. The operating temperature range is -55 °C to 125 °C, and it carries a military rating. The SNJ54HC245FK is available in a 20-pin LCCC package, designed for surface mounting.

Key electrical characteristics include an IOL of 7.8 mA and an IOH of -7.8 mA. The device includes features such as positive input clamp diodes for signal integrity. Its design minimizes external timing requirements, allowing for efficient data transmission control via the direction-control (DIR) and output-enable (OE) inputs, which can isolate the buses when disabled.