SN74LVC373APW

Latches Overview

The SN74LVC373APW is an octal transparent D-type latch with three-state outputs manufactured by Texas Instruments. It operates from a supply voltage of 1.65 V to 3.6 V and accepts input voltages up to 5.5 V, supporting mixed-mode signal operation. The device features a maximum propagation delay of 6.8 ns at 3.3 V and includes Ioff circuitry for partial-power-down mode. It provides high drive capability with output currents up to 24 mA and offers ESD protection exceeding 2000 V via the human-body model. The component is housed in a 20-pin TSSOP package.

Latches Feature Summary

• Operates within a wide voltage range of 1.65 V to 3.6 V
• Inputs accept voltages up to 5.5 V for mixed-mode compatibility
• Ioff feature supports live-insertion and back-drive protection
• High drive capability with balanced output drive current

Latches Applications

• Network switches
• TV set-top boxes
• Motor drives
• PCs and notebooks

Latches Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-20 package variant. Confirm RoHS compliance status and lead finish details against the latest manufacturer documentation. Ensure the operating temperature range meets system requirements, as industrial variants may differ. Cross-reference the datasheet revision date to validate timing parameters and absolute maximum ratings before final integration.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for bus interface applications. It is suitable for designs needing voltage translation between 3.3-V and 5-V systems due to its 5.5-V tolerant inputs. Consider the TSSOP-20 package constraints regarding board space and thermal dissipation. Verify that the 6.8 ns propagation delay at 3.3 V aligns with the system's timing budget.

Latches Part Context

This part belongs to the SNx4LVC373A family of octal transparent D-type latches. It shares functional characteristics with other packages in the series, such as SOIC and SSOP variants, but differs in physical dimensions and pin pitch. The LVC series is designed for low-voltage CMOS applications requiring high speed and low power consumption.

Latches Replacement Considerations

SN74LVC373ADW (SOIC-20 package)

Latches FAQ

How does the OE pin affect internal latch operations?

The output-enable (OE) pin controls the state of the outputs but does not affect the internal operation of the latches. Data can be entered or retained while outputs are in the high-impedance state.

What is the purpose of the Ioff feature?

The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down, supporting partial-power-down modes.