SY10EP11UZI

Clock Buffers, Drivers Overview

The SY10EP11UZI is a precision, high-speed 1:2 differential fanout buffer from the ECL Pro™ family. It supports PECL, LVPECL, ECL, and LVECL logic families with power supply options of 2.5V, 3.3V, and 5V. The device guarantees AC performance including a maximum toggle frequency (fMAX) exceeding 3.0GHz, within-device skew under 20ps, and propagation delay up to 300ps at VCC = 2.5V. It operates over an industrial temperature range of –40°C to +85°C and is housed in an 8-pin SOIC package.

Clock Buffers, Drivers Feature Summary

• Supports 2.5V, 3.3V, and 5V power supplies for PECL/LVPECL/ECL/LVECL applications
• Guaranteed fMAX > 3.0GHz with < 20ps output-to-output skew
• Propagation delay ranges from 140ps to 300ps depending on voltage
• Differential inputs feature clamping circuitry for stability under open conditions

Clock Buffers, Drivers Applications

• High-speed clock distribution networks
• Data transmission systems requiring precise timing
• Industrial equipment operating in wide temperature environments

Clock Buffers, Drivers Procurement Notes

Verify that the ordering suffix 'Z' corresponds to the 8-pin SOIC package and 'I' indicates the industrial temperature range (-40°C to +85°C). Confirm lead finish specifications if RoHS compliance is required, as standard versions may use Sn-Pb while 'G' suffixes indicate Pb-Free NiPdAu finishes. Ensure power supply decoupling capacitors are placed close to the VCC pin.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:2 differential fanout buffer with guaranteed sub-20ps skew is necessary. Compare against the SY100EP11U variant if higher drive current or specific DC electrical characteristics are needed. Ensure the input signal swing falls within the 150mV to 1200mV range for proper operation across all supported voltage levels.

Clock Buffers, Drivers Part Context

This part belongs to the Micrel ECL Pro™ series, which was acquired by Microchip Technology. The SY10EP11U is designed to replace older devices like the EL11V, offering significantly improved within-device skews and output transition times. It serves as a critical interface component in high-frequency digital circuits requiring low jitter and stable differential signaling.

Clock Buffers, Drivers Replacement Considerations

Cross-reference tables list the MC10EP11D/DT and MC10LVEP11D/DT from ON Semiconductor as equivalent parts. Verify pin compatibility and electrical parameters before substitution.

Clock Buffers, Drivers FAQ

What happens if the differential inputs are left open?

The differential inputs employ clamping circuitry to maintain stability. If inputs are left floating, the Q outputs will default to LOW.

How does the device handle single-ended inputs?

Single-ended operation is supported on the D pin. For PECL mode, single-ended input CLK pin operation is limited to VCC ≥ 3.0V. In ECL/LVECL modes, it is limited to VEE ≤ –3.0V.

What is the recommended termination method?

The datasheet recommends Parallel Termination (Thevenin Equivalent) or Three-Resistor Y-Termination. Resistor values vary based on the supply voltage (e.g., R1=130Ω, R2=82Ω for +3.3V).