SN74BCT573NSRG4

Overview

The SN74BCT573NSRG4 is an octal transparent D-type latch manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features eight non-inverting circuits in a 20-pin SOIC package. The device exhibits a propagation delay of 8.2 ns at 5 V, with low-level output current capability of 32 mA and high-level output current of -15 mA. Static current consumption is specified at 62 uA. It supports surface mount installation and functions reliably across an operating temperature range from 0 °C to +70 °C.

Feature Summary

• Octal transparent D-type latch architecture providing eight independent data storage channels
• High-drive output stage capable of sourcing 32 mA and sinking 15 mA for robust signal integrity
• TTL-compatible input structure ensuring direct interface with standard logic families

Applications

• Parallel-to-serial data conversion interfaces
• Registering data buses in microprocessor systems
• Memory address latching applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and environmental compliance. Confirm RoHS status and lead times directly with authorized distributors as availability varies. Ensure the component matches the required industrial or commercial temperature grade specifications for the target application environment.

Selection Notes

Select this component when an octal latch with high drive strength is required for bus holding applications. The BCT series offers improved performance over standard HCT devices while maintaining TTL compatibility. Verify that the 20-pin SOIC package fits the PCB layout constraints and that the 0 °C to +70 °C operating range meets the system thermal requirements.

Part Context

This part belongs to the SN74BCT series of BiCMOS logic devices designed for high-speed operation. It serves as a latch variant within the broader 74xx logic family, specifically optimized for buffering and registering data lines in digital systems. The NSRG4 designation indicates a specific tape-and-reel packaging configuration produced by Texas Instruments.