74ABT373CMSAX

Overview

The onsemi 74ABT373CMSAX is an octal transparent latch with 3-STATE outputs manufactured in a 20-lead Shrink Small Outline Package (SSOP). It operates within a supply voltage range of +4.5V to +5.5V and supports an ambient temperature range of -40°C to +85°C. The device features D-type latching controlled by a Latch Enable input, with data appearing on the bus when the Output Enable input is LOW. Propagation delays from Data to Output are specified between 1.9ns and 4.5ns at 50pF load.

Feature Summary

• Octal transparent latches with 3-STATE output buffers for bus interfacing
• High drive capability with 64mA sink and 32mA source current
• Guaranteed simultaneous switching and output skew specifications
• Glitch-free high-impedance bus loading during power cycles

Applications

• Bus organized system applications
• Data storage and transfer interfaces
• High-speed digital logic circuits

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity and pin alignment against the 20-SSOP specification. Ensure environmental compliance documentation matches project requirements. Validate that the ordering suffix corresponds to the tape and reel packaging format.

Selection Notes

Select this component for designs requiring octal data latching with tri-state control. Verify that the SSOP footprint fits the PCB layout constraints. Ensure the operating voltage remains within the 4.5V to 5.5V range. Check propagation delay limits against the system timing requirements under expected load conditions.

Part Context

This part belongs to the 74ABT series of high-speed CMOS logic devices. It functions as an octal transparent latch, distinct from flip-flops like the 74ABT374 which use edge-triggering. The ABT series provides improved speed and lower power consumption compared to older logic families while maintaining compatibility with standard TTL levels.

Replacement Considerations

Check for direct equivalents such as the 74ABT373CSC or 74ABT373CSJ from Fairchild/ON Semiconductor. Verify pinout compatibility and electrical characteristics before substitution.