SNJ54F245W

Overview

The SNJ54F245W is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data transmission between two 8-bit buses (A and B). The device features direction control via the DIR input and output enablement via the OE input. It is housed in a 20-pin Ceramic Flat Package (CFP) and is characterized for operation over the military temperature range of -55 °C to 125 °C.

Feature Summary

• Bidirectional data transfer capability between A and B buses controlled by logic levels at the DIR input
• Three-state outputs designed to drive bus lines directly while allowing effective isolation when disabled
• Common control architecture managing direction and enable functions simultaneously

Applications

• Asynchronous communication interfaces between data buses
• Military and defense electronic systems requiring extended temperature tolerance
• High-speed digital signal routing in complex circuit architectures

Procurement Notes

Verify that the component matches the specific SNJ54F245W designation, ensuring it corresponds to the CFP-20 package variant rather than other available packages like CDIP or LCCC. Confirm the manufacturer is Texas Instruments and validate the operating temperature range specification against the required military grade standards before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring robust octal bus interfacing under extreme environmental conditions. The SNJ54F245W is suitable for applications demanding high reliability and wide thermal stability. Ensure the design accommodates the 20-pin ceramic flat package footprint and meets the necessary power supply voltage constraints for optimal performance.

Part Context

This part belongs to the SN54F/74F series of logic integrated circuits produced by Texas Instruments. The 'SNJ' prefix indicates a military-grade qualification, while the 'W' suffix specifically denotes the ceramic flat package configuration. It serves as a specialized version of the standard F-series bus transceivers tailored for harsh operational environments.

Replacement Considerations

Direct substitutes include SNJ54F245J (CDIP package) and SNJ54F245FK (LCCC package). Verify pin compatibility and package dimensions when considering these alternatives to ensure proper integration into existing hardware designs.