SY100EP14UK4G

Clock Buffers, Drivers Overview

The SY100EP14UK4G is a high-speed, 2 GHz differential PECL/ECL 1:5 fanout buffer optimized for ultra-low skew applications. It features a 2:1 input multiplexer and operates within a wide supply voltage range of 2.37V to 5.5V. The device guarantees less than 25ps within-device skew over temperature and supply voltage variations. Inputs accept PECL, LVPECL, ECL, LVECL, and HSTL logic levels, while outputs provide fully differential signals compatible with 100K ECL standards. It includes an integrated VBB reference for single-ended or AC-coupled inputs and a synchronous enable pin to prevent runt clock pulses.

Clock Buffers, Drivers Feature Summary

• Guaranteed AC parameters including >2GHz maximum frequency and <25ps within-device skew
• Integrated 2:1 differential input multiplexer for redundant clock switchover
• Flexible supply voltage operation supporting 2.5V, 3.3V, and 5V systems
• Synchronous enable pin that forces outputs to a fixed state on the next low clock transition

Clock Buffers, Drivers Applications

• Redundant clock switchover systems
• Ultra-low skew clock distribution networks
• High-performance ECL synchronization circuits

Clock Buffers, Drivers Procurement Notes

Verify the industrial temperature rating (-40°C to +85°C) and K4 package marking (XEP14U). Confirm RoHS compliance via the Pb-Free bar line indicator on the component body. Ensure proper termination resistors are used for the specific supply voltage configuration.

Clock Buffers, Drivers Selection Notes

Select this component when interfacing between different logic families such as HSTL, LVPECL, and ECL. Use the internal VBB reference for AC-coupled single-ended inputs to eliminate external resistor networks. Ensure the application requires a 1:5 output ratio and supports differential signaling.

Clock Buffers, Drivers Part Context

This part belongs to Micrel's Precision Edge® and ECL Pro™ high-speed clock synchronization family. It is manufactured by Microchip Technology following the acquisition of Micrel. The 'G' suffix indicates a lead-free package variant recommended for new designs.

Clock Buffers, Drivers Replacement Considerations

Consult the manufacturer website for other devices in the high-speed, low-skew fanout buffer, translator, and clock generator product lines if different I/O combinations are required.

Clock Buffers, Drivers FAQ

How should the VBB pin be connected for single-ended PECL inputs?

Connect the VBB pin to the unused /CLK pin and bypass it to VCC through a 0.01µF capacitor.

What is the function of the /EN pin?

The /EN pin is a synchronous enable that forces outputs into a fixed logic state only after the outputs are in a LOW state, preventing runt clock pulses.

What happens if the CLK0 and CLK1 inputs are left floating?

/CLK0 and /CLK1 default to VCC/2, while CLK0 and CLK1 default to LOW due to internal pull-down resistors.