SY55853UKC

Overview

The SY55853UKC is a SuperLite D-type transparent latch manufactured by Microchip Technology, housed in a 10-pin MSOP package. It operates on a 2.3V to 5.7V power supply and supports a maximum frequency of 2.5 GHz. The device features fully differential source-terminated CML outputs with a typical propagation delay of 400 ps from data or latch enable to output. It accepts CML, PECL, and LVPECL input logic levels and includes an asynchronous active-high level-sensitive reset. The commercial operating temperature range is specified from -40°C to +85°C.

Feature Summary

• Provides single-bit storage functionality where the differential output flows through the input while the latch enable signal is high and remains static when low.
• Features fully differential source-terminated CML outputs optimized for fast edge rates and compatibility with high-speed logic families.
• Includes an asynchronous, level-sensitive reset input that forces the flip-flop into a known zero state.

Applications

• High-speed logic circuits
• OC-48 communication systems

Procurement Notes

Verify the specific ordering suffix 'KC' against official documentation to confirm it denotes the commercial temperature grade variant within the SY55853U family. Ensure the component matches the required lead finish specifications and package type before procurement. Cross-reference the manufacturer's current status as this part may be subject to lifecycle changes.

Selection Notes

Select this component for designs requiring a transparent latch with differential signaling capabilities. It is suitable for applications needing fast edge rates and compatibility with CML, PECL, or LVPECL logic levels. Consider the 10-pin MSOP package size for space-constrained layouts and verify termination requirements for the differential inputs and outputs.

Part Context

The SY55853U belongs to Micrel's SuperLite family of high-speed CML logic devices. This family is characterized by small packaging options and wide voltage operation ranging from 2.3V to 5.7V. The SY55853UKC specifically represents the commercial temperature grade version of this latch, designed for integration into high-performance digital systems.

Replacement Considerations

Check for SY55853UKI (Industrial grade) if extended temperature performance is required. Verify availability of SY55853UKG variants for lead-free compliance needs. No direct functional substitutes are listed in the provided documentation.