74LVTH273WMX

Overview

The 74LVTH273WMX is an octal D-type flip-flop manufactured by Fairchild Semiconductor, belonging to the LVTH logic series. It features eight positive-edge-triggered D flip-flops with clear inputs and three-state outputs in a 20-pin SOIC package. The device operates within a voltage range of 2.7 V to 3.6 V, supporting high-speed data storage applications. Key electrical characteristics include a propagation delay of 3.2 ns, with output drive capabilities of -32 mA for high-level and 64 mA for low-level states. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent positive-edge-triggered D flip-flops for parallel data handling
• Three-state outputs enable direct connection to bus lines without external pull-up or pull-down resistors
• Integrated clear inputs allow asynchronous resetting of all flip-flops to a low state regardless of clock activity

Applications

• Parallel data buffering in digital communication systems
• Register stages in microprocessor-based memory architectures
• I/O port expansion for peripheral interface control

Procurement Notes

Verify that the ordering suffix matches 'WMX' to ensure the correct SOIC-20 surface-mount package variant. Confirm the manufacturer designation as Fairchild Semiconductor or its successor entity onsemi, as corporate acquisitions may affect branding on datasheets and components. Ensure compliance with RoHS directives if environmental regulations apply to your specific manufacturing process.

Selection Notes

Select this component when an octal register with high-drive capability is required for 3.3 V logic systems. The LVTH series offers TTL-compatible input thresholds while maintaining CMOS power efficiency. Consider the 3.2 ns propagation delay for timing constraints and verify that the 20-pin SOIC footprint aligns with your PCB layout requirements compared to alternative packages like TSSOP.

Part Context

This part belongs to the 74LVTH family of low-voltage TTL-compatible logic devices. The '273' designation specifically identifies it as an octal D-type flip-flop with clear functionality. It serves as a standard building block for sequential logic circuits, distinguishing itself from buffer drivers or combinational gates within the broader 74-series logic catalog.

Replacement Considerations

The SN74LVTH273PWR from Texas Instruments is a confirmed functional substitute offering identical logical operations and pinout compatibility. Both devices share the same LVTH series specifications, including voltage ranges and drive currents, allowing for direct interchangeability in most designs.