LTC6957HMS-4#TRPBF

Clock Buffers, Drivers Overview

The LTC6957HMS-4#TRPBF is a low phase noise, dual-output AC signal buffer and driver from Analog Devices. It features complementary CMOS outputs (LTC6957-4 variant) and operates on a single 3.15V to 3.45V supply. The device accepts sine wave or logic inputs up to 300MHz, providing optimized conversion with minimal additive jitter. Packaged in a 12-lead MSOP, it supports industrial temperature ranges (-40°C to 125°C). Key electrical parameters include a typical propagation delay of 0.95ns, output skew of 5ps, and supply current of 24mA with both outputs enabled.

Clock Buffers, Drivers Feature Summary

• Dual Output Buffer/Driver with Complementary CMOS Outputs
• Low Phase Noise: Additive Jitter typically 53fs RMS at 300MHz
• Frequency Range: Supports input frequencies up to 300MHz
• Selectable Input Filtering: FILTA/FILTB pins allow bandwidth selection

Clock Buffers, Drivers Applications

• System Reference Frequency Distribution
• High Speed ADC, DAC, DDS Clock Driver
• Military and Secure Radio
• Broadband Wireless Transceiver

Clock Buffers, Drivers Procurement Notes

Verify the suffix #TRPBF indicates Tape & Reel packaging for automated assembly. Confirm the 'H' grade designation corresponds to the extended -40°C to 125°C operating temperature range required by your application specifications. Ensure the 12-lead MSOP footprint matches your PCB layout constraints.

Clock Buffers, Drivers Selection Notes

Select this part when complementary CMOS outputs are required for differential signaling or specific logic interface needs. Compare against LTC6957-3 if only in-phase outputs are sufficient. Consider the selectable low-pass filtering options via FILTA/FILTB pins to optimize phase noise performance for slow-slewing sine wave inputs versus standard logic levels.

Clock Buffers, Drivers Part Context

This component belongs to the LTC6957 family, which includes variants with LVPECL (LTC6957-1), LVDS (LTC6957-2), and In-Phase CMOS (LTC6957-3) outputs. The LTC6957-4 specifically provides complementary CMOS outputs. All variants share the same core architecture for low-noise buffering but differ in output stage configuration and drive capabilities.

Clock Buffers, Drivers Replacement Considerations

Direct functional substitutes within the same package and pinout include other members of the LTC6957 family such as LTC6957IMS-3#TRPBF (In-Phase CMOS) or LTC6957IMS-1#TRPBF (LVPECL), provided the output logic type matches the system requirements. Verify thermal and electrical compatibility before substitution.