SNJ54F245FK

Overview

The SNJ54F245FK is an octal bus transceiver with 3-state outputs designed for asynchronous communication between data buses. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data transmission controlled by the DIR input, while the OE input isolates the buses when disabled. The device functions over a military temperature range of -55 °C to 125 °C. It utilizes a 20-pin LCCC package.

Feature Summary

• Bidirectional data transmission capability between two 8-bit buses
• Direction control via dedicated logic input
• Output isolation feature through enable control
• Military-grade temperature characterization

Applications

• Asynchronous communication between data buses
• Bus-oriented memory and signal buffering
• Military and defense applications requiring wide temperature operation

Procurement Notes

Verify the specific ordering suffix FK corresponds to the LCCC package configuration. Confirm RoHS compliance status as indicated in official documentation. Ensure the component meets QML certification requirements if designated for military use. Validate that the operating temperature range aligns with system specifications.

Selection Notes

Select this component for applications requiring high-speed octal bus interfacing under extreme environmental conditions. Consider the 3-state output capability for efficient bus sharing. Evaluate the LCCC package suitability for the intended PCB layout and mounting constraints compared to alternative pin-compatible options.

Part Context

This part belongs to the SN54F245 family of octal bus transceivers manufactured by Texas Instruments. The 'SNJ' prefix indicates a ceramic DIP or similar military-grade construction variant, while 'FK' specifies the leadless ceramic chip carrier package. It is distinct from the commercial SN74F245 series which has a narrower temperature range.

Replacement Considerations

SNJ54F245J (CDIP package), SNJ54F245W (CFP package)