JM54ACT245SSA-R

Overview

The JM54ACT245SSA-R is an octal bus transceiver manufactured by National Semiconductor, housed in a 20-lead CFP package. It features non-inverting three-state outputs and operates on a single 5V supply. The device supports bidirectional data transmission between two buses, controlled by a direction input and an enable input. It is designed for asynchronous communication with high-speed performance and low power consumption characteristics typical of the ACT series.

Feature Summary

• Octal bidirectional bus transceiver architecture
• Non-inverting three-state output capability
• Direction control for selective data flow management

Applications

• Asynchronous two-way communication between data buses
• High-speed digital signal routing in military systems
• Memory interface buffering in aerospace electronics

Procurement Notes

Verify the manufacturer designation as National Semiconductor or its successor Texas Instruments. Confirm the specific suffix 'SSA-R' corresponds to the 20-lead flatpack (CFP) package variant. Ensure radiation-hardened specifications are required if intended for space applications, as standard commercial variants may differ. Cross-reference datasheets for exact electrical limits.

Selection Notes

Select this component when an octal, non-inverting, three-state transceiver is required for 5V logic systems. The ACT series offers a balance of speed and power consumption suitable for general-purpose high-performance digital interfaces. Verify pin compatibility with existing PCB layouts due to the specific CFP package geometry.

Part Context

This part belongs to the 54-series military-grade logic family, indicating extended temperature range capabilities. The 'ACT' designation signifies Advanced CMOS Technology, providing faster switching speeds compared to older LS or AC families while maintaining lower power dissipation. It serves as a critical interface element in complex digital systems requiring reliable data bus isolation and direction control.

Replacement Considerations

Direct substitutes include SNJ54ACT245 or UT54ACTS245 for similar functionality. Verify package compatibility, as DIP or other flatpack variants may require adapter solutions. Ensure voltage and current ratings match system requirements before substitution.