SN74ACT373PW

Overview

The SN74ACT373PW is an octal transparent D-type latch manufactured by Texas Instruments, featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 10 ns. The device draws a static current of 4 uA and provides a low-level output current of 32 mA alongside a high-level output current of -24 mA. Designed for surface-mount applications, it utilizes a 20-pin TSSOP package and functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Transparent data storage with latching capability controlled by the enable input
• Three-state outputs allowing direct bus connection without external buffers
• High-speed operation suitable for parallel data transfer applications

Applications

• Parallel data buffering in digital systems
• Bus-oriented memory mapping circuits
• Register files for microprocessor interfaces

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-20 package configuration required for your design. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management aligns with the specified operating temperature limits during system validation.

Selection Notes

Select this component when an octal latch with three-state outputs is required for 5V logic systems. The ACT series offers faster switching speeds compared to standard LS or HC families. Verify that the TSSOP-20 footprint matches the PCB layout constraints and that the voltage levels are compatible with the driving logic sources.

Part Context

This part belongs to the SN74ACT family of advanced CMOS logic devices. It serves as a functional equivalent to older TTL-based octal latches but operates at lower power consumption. The device integrates eight D-type latches with separate clock and enable inputs, providing efficient data storage solutions for complex digital architectures.

Replacement Considerations

Check for SN74ACT373N (PDIP) or SN74ACT373DR (SOIC) if package compatibility differs. Verify electrical specifications against SN74LVC373 variants for potential voltage level mismatches.