JM54ACT240BSA

Overview

The JM54ACT240BSA is an octal buffer and line driver manufactured by National Semiconductor. It features tri-state outputs and operates within a supply voltage range of 4.5V to 5.5V. The device provides high drive currents of 24mA for both high and low output states. It is designed for military-grade performance with an operating temperature range of -55°C to 125°C. The component is housed in a 20-CFP (Flat Pack) package, suitable for surface mount applications requiring robust signal buffering.

Feature Summary

• Octal configuration providing eight independent buffer channels
• Tri-state output capability for bus-oriented systems
• Military-grade temperature rating for extreme environments

Applications

• Memory address drivers
• Clock distribution circuits
• Bus-oriented transmission lines

Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm the specific suffix 'BSA' corresponds to the 20-CFP package and military temperature grade. Ensure the part meets current environmental compliance standards if required for the final assembly, noting that older military lots may have different material compositions than modern equivalents.

Selection Notes

Select this component when an octal buffer with tri-state control is required for military or industrial applications. It is appropriate for driving buses where high current capacity and wide temperature tolerance are necessary. Compare against standard commercial variants if cost is a primary constraint, but prioritize this part for reliability in harsh thermal conditions.

Part Context

This part belongs to the 54ACT series, which denotes military-grade performance levels compared to the commercial 74ACT series. The 54ACT240 specifically implements an octal buffer design with inverted outputs. It serves as a critical interface component in digital logic systems requiring signal isolation and amplification across multiple data lines simultaneously.

Replacement Considerations

Direct replacements include other 54ACT240 variants from qualified manufacturers such as Texas Instruments or Rochester Electronics. Verify pin compatibility and electrical specifications before substitution. Cross-reference with SN54ACT240 equivalents to ensure functional parity in existing circuit designs.