FIN1022M

Overview

The FIN1022M is a non-blocking 2x2 LVDS high-speed crosspoint switch manufactured by onsemi. It operates on a single 3.3V supply (3.0V to 3.6V) and supports data rates up to 800 Mbps with a maximum toggle frequency of 900 Mbps. The device features fully differential input-to-output paths, rail-to-rail common mode range from 0.5V to 3.25V, and worst-case jitter of 190ps at 800 Mbps using PRBS 2^23-1 patterns. Typical channel-to-channel skew is 35ps, and power dissipation is less than 126mW. It is housed in a 16-lead SOIC package.

Feature Summary

• Supports multiple modes including 2:1 multiplexer, 1:2 demultiplexer, and 1:2 signal splitter via LVTTL control inputs.
• Provides open-circuit fail-safe protection to prevent noise amplification during disconnection.
• Accepts LVPECL signals directly at LVDS receiver inputs without level shifting.
• Features fast switching time of 1.1ns typical and 7.5kV HBM ESD protection.

Applications

• High-speed crosspoint switching for LVDS signal routing
• Signal splitting and distribution in communication systems
• Multiplexing and demultiplexing applications

Procurement Notes

Verify component authenticity through authorized distributors as the part may be obsolete. Confirm package type matches design requirements, specifically the 16-lead SOIC variant. Check RoHS compliance status against current environmental regulations. Ensure replacement components are validated for pin compatibility and electrical specifications before integration into existing designs.

Selection Notes

Select this component when interfacing LVDS sources with LVPECL destinations or requiring low-jitter signal routing. Consider the 16-lead SOIC package constraints for PCB layout. Evaluate thermal performance given the 126mW power dissipation limit. Verify that the 3.3V supply voltage aligns with system power rails and that LVTTL control logic levels are compatible with the SEL and EN inputs.

Part Context

The FIN1022M belongs to the FIN1022 series of analog and digital crosspoint ICs designed for high-speed serial communication interfaces. Originally developed by Fairchild Semiconductor, it is now produced under the onsemi brand. The device integrates LVDS receivers and drivers within a single chip, simplifying board design for multi-port signal management applications requiring minimal insertion loss and distortion.

Replacement Considerations

Direct substitutes include DS90CP22M-8/NOPB and DS90CP22MX-8/NOPB from Texas Instruments. SN65LVCP22DR is listed as a similar alternative. Verify functional equivalence regarding pinout, voltage levels, and timing characteristics before substitution.

FAQ

Can the FIN1022M interface directly with LVPECL signals?

Yes, the LVDS receiver inputs can accept LVPECL signals directly without additional level shifting circuitry.

What is the maximum toggle frequency supported by the device?

The maximum toggle frequency is 900 Mbps under specified load conditions.

Does the device provide protection against open circuits?

Yes, it includes open-circuit fail-safe protection that prevents noise amplification if the input connection is broken.