SY100EP14UK4G-TR

Clock Buffers, Drivers Overview

The SY100EP14UK4G-TR 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 for redundant clock switchover and a synchronous enable pin to prevent runt clock pulses. The device operates with flexible supply voltages of 2.5V, 3.3V, or 5V and includes an internal VBB reference for single-ended inputs. It accepts PECL, LVPECL, ECL, LVECL, and HSTL logic inputs within a 20-pin TSSOP package.

Clock Buffers, Drivers Feature Summary

• Guaranteed AC parameters over temperature and voltage, including >2GHz maximum frequency and <25ps within-device skew.
• Integrated 2:1 differential MUX input for seamless redundant clock switching.
• Synchronous enable pin forces outputs to a fixed state on the next low clock transition.
• Wide operating temperature range from -40°C to +85°C.

Clock Buffers, Drivers Applications

• Redundant clock switchover systems
• Ultra-low skew clock distribution networks
• High-speed data acquisition synchronization

Clock Buffers, Drivers Procurement Notes

Verify that the ordering suffix 'K4G' corresponds to the industrial temperature grade (-40°C to +85°C) and lead-free packaging as specified in the manufacturer's ordering information. Confirm the tape and reel quantity matches the required production volume before finalizing procurement orders.

Clock Buffers, Drivers Selection Notes

Select this component when interfacing between different logic families such as PECL, LVPECL, ECL, and HSTL. Ensure the system power supply aligns with the specific DC electrical characteristics for the chosen voltage level (e.g., 2.5V for LVPECL or 5V for PECL). Verify termination resistor values match the selected supply voltage to maintain signal integrity.

Clock Buffers, Drivers Part Context

This part belongs to the Precision Edge® and ECL Pro™ product lines from Microchip Technology. It is manufactured by Micrel, Inc., which was acquired by Microchip. The device is designed for high-speed clock synchronization and buffering tasks requiring precise timing control.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's website for other members of the high-speed clock synchronization family if alternative 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 synchronous enable pin (/EN)?

When /EN goes HIGH, the outputs are forced into a fixed logic state on the next LOW input clock transition, eliminating the possibility of a runt clock pulse.

How does the device handle floating inputs?

Internal 75kΩ pull-down resistors exist on CLK0 and CLK1. When left floating, CLK0/CLK1 default to LOW, and /CLK0//CLK1 default to VCC/2.