74BCT573PC

Overview

The 74BCT573PC is an octal D-type transparent latch manufactured by National Semiconductor, now part of Texas Instruments. It features eight D-type latches with true outputs and a common latch enable (LE) input. The device operates within a supply voltage range of 4.5 V to 5.5 V, with a rated voltage of 5 V. It utilizes BICMOS-TTL technology and is housed in a 20-pin plastic dual in-line package (PDIP). The component supports through-hole mounting with a terminal pitch of 2.54 mm and functions across a temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent D-type transparent latches for parallel data storage.

Applications

• Bus-oriented applications requiring temporary data storage.

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Confirm the specific suffix indicates the PDIP-20 package and commercial/industrial temperature rating. Check current availability status, as older logic families may be discontinued or subject to long lead times. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards.

Selection Notes

Select this component when an octal latch with high-speed BICMOS performance is required. It offers compatibility with TTL logic levels while maintaining CMOS low power characteristics. Consider the PDIP-20 package for prototyping or through-hole designs. Verify that the 3-state output capability aligns with your bus system's electrical requirements.

Part Context

This part belongs to the 74BCT series, which combines the speed of bipolar circuits with the low power consumption of CMOS. It is pin-compatible with other 74-series logic devices, facilitating design upgrades. The octal latch architecture is standard for interfacing microprocessors with peripheral devices or memory systems.

Replacement Considerations

Equivalent parts include SN74BCT573N and SN74BCT573DW from Texas Instruments. These alternatives share the same logical function and pinout but may differ in package type or operating temperature range.