SN74LVTH573DBR

Overview

The SN74LVTH573DBR is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the LVTH logic series. It features a 20-pin SSOP package and operates within a supply voltage range of 2.7 V to 3.6 V. The device provides non-inverting outputs with three-state capability, supporting low-level output currents of 32 mA and high-level output currents of -32 mA. Propagation delay is specified at 2.9 ns when operating at 3.3 V. The component functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent transparent D-type latches in a single integrated circuit
• Three-state outputs enable direct connection to bus-oriented systems without additional interface hardware
• LVTH technology ensures compatibility with standard CMOS logic while offering improved switching performance

Applications

• Bus-oriented architectures requiring data storage and isolation
• Memory mapping circuits for address and data latching
• Portable equipment utilizing low-voltage power supplies

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration, as this affects handling and automated assembly processes. Ensure the selected variant matches the required SSOP-20 footprint and lead finish specifications for your printed circuit board design. Confirm RoHS compliance status aligns with current environmental regulations for your target market before finalizing procurement orders.

Selection Notes

Select this component when designing systems that require high-density latching within a limited pin count constraint. The LVTH series offers a balance between speed and power consumption suitable for battery-operated devices. Compare propagation delays against system clock requirements to ensure timing margins are met. Verify that the 3.3 V operating voltage aligns with the rest of the system's logic levels.

Part Context

This part belongs to the Texas Instruments SN74LVTH573 family of octal transparent D-type latches. It shares functional similarities with other members like the SN74LVT573 but utilizes LVTH technology for optimized performance characteristics. The DBR suffix indicates surface-mount packaging in a tape-and-reel format, facilitating high-volume manufacturing integration.

Replacement Considerations

The SN74LVT573DBR is documented as a discontinued alternative. The SN74LVTH573DBR serves as a similar replacement within the same manufacturer lineup. Other potential substitutes include the 74LVT573MTCX from onsemi and the 74LVT573PW,118 from Nexperia USA Inc.