SY75572LMG

Clock Buffers, Drivers Overview

The SY75572LMG is a high-speed, fully differential 1:2 clock fanout buffer from Microchip Technology. It features two pairs of differential inputs and outputs supporting HCSL or LVDS logic levels. The device operates on a 3.3V ±5% supply (3.135V to 3.465V) within the industrial temperature range of –40°C to +85°C. It supports a maximum frequency of 267 MHz for HCSL and 100 MHz for LVDS. Key electrical parameters include ultra-low phase jitter (137 fs RMS at 200 MHz), less than 2 ps total jitter (peak-to-peak), and 50 ps output-to-output skew. It is housed in a 16-pin QFN package.

Clock Buffers, Drivers Feature Summary

• Two differential input/output pairs accepting HCSL or LVDS signals
• Ultra-low phase jitter: 137 fs RMS at 200 MHz (12 kHz - 20 MHz)
• Maximum operating frequency of 267 MHz (HCSL) or 100 MHz (LVDS)
• Integrated 2:1 input multiplexer with selectable source control

Clock Buffers, Drivers Applications

• PCI Express applications (Gen1-Gen4)
• Blade servers and desktop servers
• Storage Area Networks (SANs)
• IP routers and switches
• High performance computing systems

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix to confirm packaging configuration. The 'G' suffix indicates an industrial temperature range (-40°C to +85°C). The base part number SY75572LMG typically denotes tube packaging, while the '-TR' suffix designates tape and reel packaging containing 1,000 units. Confirm the specific package variant required for the assembly process.

Clock Buffers, Drivers Selection Notes

Select this component when low jitter distribution is critical for high-speed interfaces like PCIe. Ensure the input signal matches the supported HCSL or LVDS voltage levels. Note that the LVDS mode is limited to a maximum frequency of 100 MHz, whereas HCSL supports up to 267 MHz. Verify that the PCB layout accommodates the 16-pin QFN package dimensions.

Clock Buffers, Drivers Part Context

The SY75572LMG belongs to Microchip’s PrecisionEdge™ product line of high-speed, ultra-low jitter buffers. It is designed to replace legacy buffering solutions in datacom and telecom infrastructure where signal integrity is paramount. The device provides two identical output copies derived from one of two selectable differential inputs.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Clock Buffers, Drivers FAQ

What is the maximum frequency support for LVDS inputs?

When configured for LVDS logic levels, the SY75572LMG supports a maximum frequency of 100 MHz.

How is the input source selected?

The device includes a 2:1 input multiplexer. The SEL pin determines the active input pair: Logic High selects IN1, while Logic Low selects IN2.

What is the typical power supply current consumption?

The typical power supply current (IDD) is 42 mA under standard load conditions (50Ω, 2 pF).