74ABT373CSJ

Overview

The Fairchild Semiconductor 74ABT373CSJ is an octal transparent latch featuring TRI-STATE outputs, designed for bus-oriented system applications. It operates within a voltage range of 4.5V to 5.5V and utilizes a 20-Lead Molded Small Outline package. The device provides high output drive capabilities with a sink capability of 64 mA and a source capability of 32 mA. Propagation delay is guaranteed at 2.7 ns. It supports surface mount installation and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• TRI-STATE outputs facilitate efficient bus interfacing in organized systems.
• High output drive strength ensures robust signal transmission.
• Guaranteed latchup protection enhances device reliability.
• Glitch-free high impedance bus loading during power cycles.

Applications

• Bus-oriented system data storage
• Memory address buffering
• Clock distribution networks

Procurement Notes

Verify the specific suffix CSJ against the manufacturer's current datasheet to confirm pinout and package dimensions match your PCB footprint requirements. Confirm RoHS compliance status as manufacturing practices may vary by production era. Ensure the design accounts for the specified 4.5V to 5.5V supply voltage range to maintain timing integrity and avoid undefined logic states during operation.

Selection Notes

Select this component when high-speed latching with strong drive capability is required for bus architectures. The ABT series offers superior speed compared to standard TTL or HC families. Consider the 20-SOP package constraints and thermal dissipation needs. Verify that the 64 mA sink current meets the load requirements of the connected bus lines without exceeding absolute maximum ratings.

Part Context

This part belongs to the 74ABT logic family, known for high-speed BICMOS technology. It serves as an octal latch variant within the broader 74xx series ecosystem. Similar devices include the 74ABT374 flip-flop and 74ABT541 buffer. The CSJ suffix typically denotes a specific small-outline package configuration used in surface-mount assembly processes for compact electronic designs.

Replacement Considerations

Public confirmed substitute part numbers include SN74ABT373DW and SN74ABT373DWR from Texas Instruments. These alternatives offer similar electrical characteristics and pinouts. Verify package compatibility and ensure the replacement maintains the required propagation delay and drive current specifications for the target application.