SY88943VKC

Overview

The SY88943VKC is a limiting post amplifier designed for fiber-optic receivers, supporting data rates up to 2.5Gbps with 3.3V and 5V power supply options. It features differential PECL inputs and outputs, an open-collector TTL signal detect output, and a programmable level detect function. The device operates within a temperature range of -40°C to +85°C and is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a high-gain limiting amplifier with wide bandwidth for amplifying small signals to drive PECL inputs
• Generates a chatter-free Signal Detect (SD) open collector TTL output that transitions based on input signal loss
• Incorporates a programmable level detect function allowing sensitivity adjustment via an external resistor divider
• Features a TTL EN input to disable the output signal without removing the input signal

Applications

• 1.25Gbps and 2.5Gbps ethernet
• 531Mbps, 1062Mbps and 2.12Gbps Fibre Channel
• 622Mbps SONET
• Gigabit interface converter
• 2.5Gbps SDH/SONET

Procurement Notes

Verify the specific ordering suffix 'KC' against official Microchip documentation to confirm lead finish and package details. Ensure compatibility with existing board layouts for the 10-pin MSOP form factor. Confirm power supply requirements align with the specified 3.3V or 5V operational ranges before procurement.

Selection Notes

Select this component for applications requiring a limiting post amplifier with integrated signal detection capabilities. Consider the 10-pin MSOP package size for space-constrained designs. Evaluate the need for programmable signal detect thresholds and ensure the operating temperature range meets system requirements.

Part Context

The SY88943VKC belongs to the SY88943V family of limiting post amplifiers manufactured by Micrel, now part of Microchip Technology. This series is specifically engineered for high-frequency fiber-optic applications, providing signal quantization and voltage-limited waveform output to complement transimpedance amplifiers in optical links.

Replacement Considerations

Check for SY88943VKG as a potential lead-free alternative within the same product family. Verify pinout and electrical characteristics match before substitution.