LTC6754HUD#TRPBF

Overview

The LTC6754HUD#TRPBF is a high-speed rail-to-rail input comparator with LVDS compatible outputs manufactured by Analog Devices. It operates on a supply voltage range of 2.4V to 5.25V and features a typical propagation delay of 1.8ns with an overdrive dispersion of 1ns. The device supports a toggle rate up to 890Mbps and includes separate VCCI and VCCO supplies for the QFN package, allowing logic level translation. Key electrical parameters include a total supply current of 13.4mA when active, reducing to under 1.1mA in shutdown mode. It offers adjustable hysteresis via the LE/HYST pin and output latching capabilities.

Feature Summary

• High-speed operation with low propagation delay and minimal overdrive dispersion
• Rail-to-rail inputs extending beyond both supply rails
• LVDS compatible differential outputs with separate input and output power supplies
• Integrated shutdown pin for reduced power consumption and fast wake-up

Applications

• Clock and data recovery circuits
• Level translation between different logic families
• High-speed data acquisition systems
• Time domain reflectometry and time of flight measurements
• High speed line receivers and cable drivers

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the H grade designation indicates the extended temperature range capability from -40°C to +125°C as specified in the ordering information section of the datasheet. Ensure compatibility with the 12-lead QFN footprint during PCB layout.

Selection Notes

Select this component for applications requiring precise timing due to its low dispersion characteristics. The separate VCCI and VCCO pins allow for independent optimization of input common-mode range and output drive levels. Consider the shutdown functionality if power management is critical, noting the 120ns wake-up time. Ensure the load impedance matches the 100Ω requirement for proper LVDS signal integrity.

Part Context

This part belongs to the LTC6754 family of high-speed comparators. The HUD suffix denotes the 12-lead plastic QFN package variant with the higher temperature grade (H). Other variants in the family include SC70 packages and lower temperature grade options. The device is designed to replace slower comparators in high-frequency signal processing chains where jitter and delay are limiting factors.

Replacement Considerations

Direct substitutes within the same family include LTC6754IUD#TRPBF for commercial temperature ranges or LTC6754ISC6 variants for SC70 packaging. Verify pinout compatibility and thermal performance when transitioning between package types.