JD54LS153SFA

Overview

The JD54LS153SFA is a dual 4-line to 1-line data selector/multiplexer manufactured by National Semiconductor. It utilizes TTL logic technology and operates on a 5 V supply voltage. The device features two independent multiplexers, each selecting one of four data inputs based on two address select lines. It is housed in a ceramic flatpack package with 16 terminals. The component is designed for military temperature ranges, supporting operation from -55 °C to 125 °C.

Feature Summary

• Dual independent 4-to-1 multiplexing functionality within a single integrated circuit
• TTL logic construction ensuring compatibility with standard digital logic families
• Military-grade thermal stability suitable for extreme environmental conditions

Applications

• Data routing in military communication systems
• Address decoding in industrial control units
• Signal selection in aerospace instrumentation

Procurement Notes

Verify the specific suffix 'SFA' against official National Semiconductor documentation to confirm pinout and package dimensions. Ensure the MIL-STD-883 Class B screening level meets project requirements. Confirm RoHS compliance status as older military parts may not adhere to modern environmental directives. Validate supplier authenticity due to the legacy nature of the component.

Selection Notes

Select this component when dual independent multiplexing is required in harsh environments. Compare against SN54LS153 variants for package availability. Consider power consumption differences if operating near thermal limits. Verify that the 5 V logic levels match the system interface requirements without additional translation.

Part Context

This part belongs to the 54LS series of high-speed low-power Schottky TTL logic devices. The 54 series denotes military qualification, distinguishing it from the commercial 74 series. National Semiconductor produced these components before its acquisition by Texas Instruments, which now maintains the datasheet archives.

Replacement Considerations

Check for SN54LS153 equivalents from other manufacturers such as AMD or TI. Verify pin compatibility before substitution. Ensure the replacement part meets the same military temperature range specifications.