54ACT244/B2A

Overview

The Rochester Electronics 54ACT244/B2A is a military-grade octal buffer and line driver belonging to the ACT CMOS logic family. It features two independent four-bit sections with three-state outputs, designed for high-density memory address drivers and bus-oriented systems. The device operates on a single 5V supply within a voltage range of 4.5V to 5.5V. It utilizes a ceramic flatpack package suitable for harsh environments, ensuring compatibility with TTL inputs while providing low power consumption and latchup immunity.

Feature Summary

• Provides non-inverting data transmission from A inputs to Y outputs when enabled
• Features three-state outputs that enter a high-impedance state when disabled
• Includes separate output enable inputs for each four-bit section
• Constructed using radiation-hardened or high-reliability processes approved by original component manufacturers

Applications

• Military-grade memory address buffering
• Clock signal distribution in aerospace systems
• Bus-oriented receiver and transmitter interfacing
• High-density digital logic applications requiring MIL-PRF-38535 compliance

Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm exact testing parameters and qualification level. Components are manufactured using die or wafers sourced from original suppliers or recreated from original intellectual property with approval. Ensure the procurement specification matches the required environmental rating and test program standards defined in the datasheet.

Selection Notes

Select this component for applications requiring robust performance in extreme temperature ranges typical of military and space environments. The ACT series offers a balance of speed and power efficiency compared to standard CMOS logic. Confirm that the ceramic package type meets the mechanical constraints of the target assembly and that the input voltage levels remain compatible with the driving circuitry.

Part Context

This part is part of the SN54ACT244 family, which includes variants for commercial, automotive, and enhanced product lines. The '54' prefix indicates military temperature range capability, while 'ACT' denotes Advanced CMOS Technology. Rochester Electronics provides these components as qualified replacements or new production units for legacy and current designs requiring high reliability.

Replacement Considerations

Direct substitutes include other SN54ACT244 variants with different package options such as CDIP or LCCC, provided they meet the same electrical specifications and environmental ratings. Verify pinout compatibility and ensure the replacement maintains the required three-state functionality and propagation delay characteristics.