SN74LVTH573DBRE4

Overview

The SN74LVTH573DBRE4 is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the LVTH logic series. It features eight D-type latches with three-state outputs in a 20-pin SSOP package. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports a propagation delay of 2.9 ns at 3.3 V. It provides low-level output current of 32 mA and high-level output current of -32 mA. The component functions as a non-inverting latch with a single input line controlling eight channels. It is rated for operation between -40°C and +85°C.

Feature Summary

• Octal configuration providing eight independent transparent D-type latches
• Three-state outputs allowing direct bus-driven connections
• LVTH technology enabling high-speed performance with low power consumption

Applications

• Registering fast-moving data on microprocessor systems
• Performing temporary storage in digital signal processing applications
• Driving bus-oriented loads in communication interfaces

Procurement Notes

Verify the E4 suffix indicates lead-free construction compliant with RoHS standards. Confirm the DBR designation corresponds to the SSOP-20 tape and reel packaging format. Ensure the part number matches the specific LVTH series requirements rather than standard LVT or HCT variants. Cross-reference the manufacturer datasheet for exact pinout and electrical characteristics before integration.

Selection Notes

Select this component when designing systems requiring octal latching with three-state capability at 3.3 V logic levels. The LVTH series offers faster switching speeds compared to standard CMOS technologies while maintaining lower power dissipation. Consider the SSOP-20 package dimensions for PCB layout constraints. Verify that the 2.9 ns propagation delay meets the timing requirements of the target application circuit.

Part Context

This part belongs to the SN74LVTH573 family of octal transparent D-type latches. The E4 suffix typically denotes environmental compliance, specifically lead-free manufacturing processes. The DBR variant specifies surface-mount assembly in a shrink small-outline package. This series bridges the performance gap between older LS/TTL technologies and modern low-voltage CMOS solutions.

Replacement Considerations

SN74LVTH573DBR is a verified substitute offering identical functionality and pinout compatibility.