74ABT573CSJX

Latches Overview

The onsemi 74ABT573CSJX is an octal D-type latch featuring three-state outputs, housed in a 20-lead Small Outline Package (SOP) with a 5.3mm width. It operates within a supply voltage range of +4.5V to +5.5V and supports ambient temperatures from -40°C to +85°C. The device provides high drive capability with output sink currents up to 64mA and source currents up to 32mA. Propagation delays are specified at a maximum of 4.5ns under standard conditions, extending to 9.5ns for LE-to-output transitions under heavy loading.

Latches Feature Summary

• Inputs and outputs positioned on opposite sides of the package to facilitate direct microprocessor interfacing.
• Three-state buffers enable efficient bus interfacing while maintaining high-impedance states during power-up or power-down cycles.
• Robust output drive capabilities ensure reliable signal transmission across various load conditions.
• Guaranteed latchup protection ensures device reliability under extended stress conditions.

Latches Applications

• Microprocessor input/output port expansion
• Bus-oriented memory addressing
• Register storage applications

Latches Procurement Notes

Verify the specific ordering suffix 'CSJX' against current manufacturer documentation to confirm the SOP-20 package variant and tape-and-reel delivery format. Confirm RoHS compliance status and lead-free material declarations prior to procurement. Ensure the component meets JEDEC MS-013 or EIAJ TYPE II standards as applicable to the specific revision.

Latches Selection Notes

Select this component when broadside pinout configurations are required for simplified PCB routing compared to traditional edge-pin layouts. Consider the ABT series characteristics for high-speed data latching where low propagation delay and strong drive currents are necessary. Verify that the operating voltage and temperature ranges align with the target system environment.

Latches Part Context

This device belongs to the ABT logic family, which combines the speed of Advanced Schottky TTL with CMOS low power consumption. It is functionally identical to the ABT373 but utilizes a different pinout arrangement. The part is manufactured by onsemi, formerly Fairchild Semiconductor, and represents a standard solution for octal latching in digital systems.

Latches Replacement Considerations

The datasheet explicitly states the device is functionally identical to the ABT373. Verify if the ABT373 variant with the corresponding package suffix is available as a substitute. Cross-reference pinouts carefully to ensure compatibility despite functional equivalence.

Latches FAQ

How does the pinout of the 74ABT573 differ from similar latches?

The 74ABT573 features inputs and outputs on opposite sides of the package (broadside), whereas functionally identical devices like the ABT373 may have different pin arrangements.

What is the behavior of the outputs during power-up and power-down?

The device maintains high-impedance, glitch-free bus loading throughout the entire power-up and power-down process, preventing interference with other bus components.