SNJ54ALS653FK

Overview

The SNJ54ALS653FK is an octal bus transceiver and register with 3-state outputs, manufactured by Texas Instruments. It belongs to the ALS logic family and features independent registers and enables for A and B buses. The device supports multiplexed real-time and stored data transfer. It offers a choice of true or inverting data paths and provides open-collector outputs on the A bus alongside 3-state outputs on the B bus. The component operates within a supply voltage range of 4.5 V to 5.5 V and functions across a temperature range of -55°C to 125°C.

Feature Summary

• Independent registers and enables for A and B buses
• Multiplexed real-time and stored data transfer capability
• Open-collector outputs on the A bus and 3-state outputs on the B bus

Applications

• Bus management systems requiring data storage and transmission
• Digital signal processing interfaces
• Memory buffer applications

Procurement Notes

Verify the specific ordering suffix FK corresponds to the LCCC package configuration. Confirm that the SNJ prefix indicates military-grade qualification standards as defined by Texas Instruments. Ensure compatibility with existing system voltage levels and temperature requirements before procurement.

Selection Notes

Select this component when open-collector outputs are required on one bus side while maintaining 3-state control on the other. Consider the ALS technology speed and power characteristics relative to system needs. Verify pinout compatibility if replacing older devices from the same functional family.

Part Context

This part is part of the SN54ALS65x series, which includes similar octal bus transceivers and registers. The SNJ54ALS653FK specifically denotes the military-grade version in the LCCC package. It shares functionality with SN54ALS652 and SN54AS651 but differs in output configuration options.

Replacement Considerations

SNJ54ALS652JT

FAQ

What is the difference between the A and B bus outputs?

The A bus features open-collector outputs, while the B bus provides 3-state outputs.

How does the select control input affect data transfer?

A low level selects real-time data transfer, and a high level selects stored data transfer from the internal registers.