SY58035UMI

Clock Buffers, Drivers Overview

The SY58035UMI is a high-speed 1:6 LVPECL fanout buffer with an integrated 2:1 multiplexer input, manufactured by Microchip Technology. It operates on a 2.5V or 3.3V supply and supports clock frequencies up to 4.5GHz. The device features ultra-low skew (<20ps output-to-output), propagation delay of <320ps, and typical RMS phase jitter of 50fs. It includes unique internal termination for AC- or DC-coupled inputs (CML, PECL, LVDS) without external resistors. Packaged in a 32-pin MLF (5mm x 5mm) format, it functions within the industrial temperature range of –40°C to +85°C.

Clock Buffers, Drivers Feature Summary

• 1:6 Fanout Buffer with 2:1 MUX Input
• Ultra-low Skew (<20ps) and Jitter (50fs typ)
• Internal Termination for CML/PECL/LVDS Inputs
• LVPECL Outputs with 100K Temperature Compensation

Clock Buffers, Drivers Applications

• Redundant clock distribution
• SONET/SDH clock/data distribution
• Fibre Channel distribution
• Gigabit Ethernet clock distribution

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'I' confirms the Industrial temperature range (-40°C to +85°C). Confirm package type is MLF-32. Check RoHS status if required; Pb-Free variants use suffix 'G'. Ensure moisture sensitivity handling protocols are followed as the component is humidity sensitive.

Clock Buffers, Drivers Selection Notes

Select this part for applications requiring low-jitter clock distribution with redundant input switching. Compare with SY58034U for CML outputs or SY58036U for 400mV LVPECL swings. Ensure power supply decoupling (0.1µF || 0.01µF) is placed close to VCC pins. Connect the exposed pad to ground for thermal management.

Clock Buffers, Drivers Part Context

The SY58035U belongs to Micrel’s Precision Edge product line, now under Microchip Technology. It is designed for high-speed digital systems requiring precise timing. The 'UMI' designation specifies the MLF-32 package and Industrial operating range.

Clock Buffers, Drivers Replacement Considerations

SY58034U offers similar functionality but with CML outputs. SY58036U provides 400mV LVPECL outputs instead of standard swing. Verify pin compatibility and output voltage levels before substitution.