54ACTQ16374W-QV

Overview

The 54ACTQ16374W-QV is a military-grade, 16-bit D-type transparent latch manufactured by National Semiconductor. It features tri-state outputs designed for bus-oriented system applications. The device operates with a supply voltage range of 4.5 V to 5.5 V and includes latch enable (LE) and output enable (OE) controls. Data is latched on the HIGH-to-LOW transition of LE when OE is active. The component is qualified for radiation environments, ensuring reliable performance in aerospace and defense systems requiring high noise immunity and bus hold capabilities.

Feature Summary

• Tri-state outputs facilitate efficient bus interfacing in complex digital systems
• Military qualification ensures reliability under extreme environmental conditions
• Transparent latch architecture allows direct data flow control via enable signals

Applications

• Aerospace avionics data bus interfaces
• Defense communication equipment registers
• Radiation-hardened memory address latching

Procurement Notes

Verify the specific suffix 'W-QV' against the manufacturer's official datasheet to confirm radiation hardness level and package variant. Ensure the source document explicitly lists this part number as an active or discontinued item from National Semiconductor or its successor entity. Cross-reference the military drawing specifications to validate compliance requirements before procurement.

Selection Notes

Select this component for applications requiring robust latch functionality in high-radiation environments. Compare pin compatibility and electrical characteristics with standard commercial variants if cost is a factor. Confirm that the tri-state output drive strength meets the load requirements of the target bus architecture. Verify thermal management needs for the specified package type.

Part Context

This part belongs to the 54ACT series of advanced CMOS logic devices. It shares functional similarities with other 16-bit latches but is distinguished by its military-grade construction and radiation tolerance. The series typically offers improved speed and power consumption compared to older logic families, making it suitable for high-performance digital signal processing tasks.

Replacement Considerations

Consult official substitution guides for equivalent radiation-hardened parts. Verify pinout compatibility with alternatives like the 54ACTQ16374W-QV if cross-referencing buffer/latch families. Ensure voltage levels and output drive capabilities match the existing design constraints.