SNJ54LS243W

Overview

The SNJ54LS243W is a quadruple bus transceiver from the LS logic family, housed in a 14-pin CFP package. It operates over a military temperature range of -55°C to 125°C with a supply voltage of 4.5V to 5.5V. The device features PNP inputs that reduce DC loading and provide typical hysteresis of 400mV at the inputs to improve noise margin. It supports asynchronous two-way communication between data buses.

Feature Summary

• PNP inputs reduce DC loading
• Hysteresis improves noise margin
• Asynchronous two-way communication

Applications

• Two-way asynchronous communication between data buses
• Driving terminated lines down to 133 ohms

Procurement Notes

Verify the specific ordering suffix 'W' corresponds to the CFP ceramic flatpack package when sourcing. Confirm the component meets QML certification requirements for military applications if specified in your design documentation. Ensure the procurement channel provides valid traceability records consistent with the manufacturer's production standards.

Selection Notes

Select this component for designs requiring robust asynchronous data transfer across multiple lines. The LS series offers standard drive capabilities suitable for general-purpose digital interfaces. Verify that the operating environment remains within the specified -55°C to 125°C range to ensure reliable performance.

Part Context

This part belongs to the SN54LS243 family of quadruple bus transceivers. It is designed for high-reliability applications where military-grade temperature stability is required. The device functions as a bidirectional buffer, allowing data flow control between separate bus structures while maintaining signal integrity through its input characteristics.

Replacement Considerations

SNJ54LS243J

FAQ

What is the purpose of the PNP inputs?

The PNP inputs are designed to reduce DC loading on the driving circuitry.

Does the device support driving terminated lines?

Yes, the device can be used to drive terminated lines down to 133 ohms.