74AHCT573D,112

Latches Overview

The Nexperia 74AHCT573D,112 is an octal D-type transparent latch with 3-state outputs housed in a SO20 (SOT163-1) package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features TTL-compatible input levels, overvoltage tolerant inputs up to 5.5 V, and Schmitt-trigger action on all inputs. It includes dedicated Latch Enable (LE) and Output Enable (OE) controls, allowing data transparency when LE is HIGH and storage upon the HIGH-to-LOW transition. Outputs enter a high-impedance state when OE is HIGH.

Latches Feature Summary

• Octal D-type transparent latch architecture with 3-state outputs
• TTL input level compatibility for direct interfacing with TTL logic
• Overvoltage tolerant inputs enabling operation in mixed-voltage environments
• Schmitt-trigger action on all inputs for improved noise immunity

Latches Applications

• Data buffering and register storage in digital systems
• Interface translation between TTL and CMOS logic families
• Bus holding applications requiring high-impedance output states

Latches Procurement Notes

Verify that the ordering suffix '112' corresponds to the standard tape-and-reel packaging configuration as defined in the official Nexperia ordering information table. Confirm that the SO20 (SOT163-1) package variant matches the required board layout dimensions. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range and 4.5 V to 5.5 V supply voltage limits to maintain guaranteed performance specifications.

Latches Selection Notes

Select this component when TTL-level input compatibility is required alongside CMOS low power dissipation characteristics. The 74AHCT573D is functionally identical to the 74AHC373 but utilizes TTL input thresholds rather than CMOS thresholds. Choose the SO20 package if through-hole mounting or specific body width constraints are necessary. Verify that the overvoltage tolerance feature meets the requirements for interfacing with higher voltage signal lines without external protection components.

Latches Part Context

This part belongs to the Nexperia 74AHCT573 family of octal D-type transparent latches. It shares functional similarities with the 74AHC573 but differs in input threshold specifications, adhering to TTL standards instead of CMOS. The device is available in multiple package options including TSSOP20 and DHVQFN20, with the 'D' suffix specifically denoting the SO20 plastic small outline package variant.

Latches Replacement Considerations

The datasheet explicitly states the device is functionally identical to the 74AHC373 and 74AHCT373. These part numbers may serve as direct substitutes depending on package availability and specific input/output pinout verification.