SY55857LKG

Translators, Level Shifters Overview

The SY55857LKG is a fully differential, high-speed dual translator designed to accept any logic standard from single-ended TTL/CMOS to differential LVDS, HSTL, or CML and translate it to LVPECL. It operates on a 3.0V to 3.6V power supply with typical low power consumption of 46mW per channel. The device supports maximum operating frequencies up to 2.5Gbps for NRZ data and 2.5GHz clock toggle frequencies. Propagation delay is guaranteed at less than 400ps, with within-device skew under 50ps. It features two channels housed in a 10-pin (3mm × 3mm) MSOP package.

Translators, Level Shifters Feature Summary

• Accepts virtually all logic standards including single-ended SSTL, TTL, CMOS and differential LVDS, HSTL, CML inputs
• Translates input signals to 100K-compatible LVPECL outputs with low output impedance emitter-follower design
• Guaranteed AC parameters over temperature range ensuring reliable high-speed signal translation
• Flow-through pinout architecture optimized for high-density PCB layouts

Translators, Level Shifters Applications

• High-speed logic systems
• Data communications systems
• Wireless communications systems
• Telecom systems

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'KG' indicates the Pb-Free package with NiPdAu lead finish as documented in the manufacturer's ordering information. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your system requirements. Ensure proper termination networks are included in the design, as the device does not internally terminate its inputs. Check for moisture sensitivity level compliance during storage and handling procedures.

Translators, Level Shifters Selection Notes

Select this component when interfacing mixed-logic environments requiring translation to LVPECL standards. The dual-channel configuration allows simultaneous processing of independent signals within a compact footprint. Consider the input voltage swing requirements; performance varies based on whether the input voltage range is 0 to 2.4V or extends to VCC+0.3V. Ensure adequate bypass capacitance (0.01µF to 0.1µF) is placed near the VCC pin for stable operation.

Translators, Level Shifters Part Context

The SY55857L belongs to Micrel's SuperLite family of high-speed interface circuits. This series focuses on providing flexible logic translation capabilities with minimal power consumption. The device represents a specialized solution for bridging different signaling standards in high-speed digital designs, particularly where LVPECL compatibility is required for downstream components.

Translators, Level Shifters Replacement Considerations

SY55857LKI serves as a direct substitute part number within the same product line, differing primarily in lead finish specifications.