SN74HC373PWRG4

Overview

The SN74HC373PWRG4 is an octal transparent D-type latch with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to +85°C. The device features high-current outputs capable of driving up to 15 LSTTL loads. Propagation delay ranges from 20 ns to 40 ns at 4.5 V, while static current is typically 8 µA. Low-level output current reaches 32 mA, and high-level output current is -7.8 mA. It is housed in a TSSOP-20 package.

Feature Summary

• Transparent data latching allows Q outputs to follow D inputs when the latch-enable signal is active.
• Three-state outputs provide high-impedance states for bus isolation without external pullup components.
• High-current drive capability enables direct interfacing with heavy capacitive or low-impedance loads.

Applications

• Buffer registers
• I/O ports
• Bidirectional bus drivers

Procurement Notes

Verify the RoHS-compliant suffix 'G4' matches the specific procurement requirement. Confirm the TSSOP-20 package designation aligns with board layout constraints. Ensure the -40°C to +85°C industrial temperature rating satisfies environmental specifications. Cross-reference the manufacturer part number against official distribution channels to validate authenticity.

Selection Notes

Select this component for designs requiring eight parallel data storage elements with bus-compatible outputs. The HC logic family ensures compatibility with standard CMOS interfaces. Verify that the 2 V to 6 V supply range accommodates the system's power rails. Consider the propagation delay characteristics relative to the maximum clock frequency requirements of the application circuit.

Part Context

This device belongs to the SN74HC373 series of octal transparent D-type latches. It shares functional similarities with other members like the SN74HC373APWR but differs in specific ordering suffixes and packaging details. The product line is designed for general-purpose digital logic applications requiring reliable data retention and bus management capabilities.

Replacement Considerations

SN74HC373APWR is a documented substitute offering identical functionality in the same TSSOP-20 package format.