SY89873LMG-TR

Overview

The SY89873LMG-TR is a 3.3V low-skew, low-jitter clock divider and fanout buffer featuring Precision Edge LVDS outputs. It accepts any high-speed differential input (AC- or DC-coupled CML, LVPECL, HSTL, or LVDS) and divides the frequency by programmable ratios of 2, 4, 8, or 16. The device includes two output banks: Bank A provides an undivided pass-through copy of the input clock, while Bank B provides the divided output. Key performance metrics include a maximum output toggle frequency exceeding 2.0GHz, a maximum input frequency greater than 3.0GHz, propagation delay under 800ps, and within-device skew less than 15ps.

Feature Summary

• Programmable clock divider with ratios of ÷2, ÷4, ÷8, and ÷16
• Two matched-delay LVDS output banks (Bank A for pass-through, Bank B for divided)
• Universal differential input support for AC/DC coupled CML, LVPECL, HSTL, and LVDS via VT pin
• Low jitter design with <1ps RMS cycle-to-cycle jitter

Applications

• SONET/SDH line cards
• Transponders
• High-end multiprocessor servers

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging variant as specified in the datasheet. Confirm the package type is QFN-16 and check lead finish specifications if required for assembly processes. Ensure compatibility with the industrial temperature range of –40°C to +85°C.

Selection Notes

Select this component when a 3.3V supply is required with LVDS outputs. For 2.5V applications, consider the SY89872U. If LVPECL outputs are needed instead of LVDS, the SY89871U is the appropriate alternative. This part is suitable for systems requiring precise matching between undivided and divided clock paths.

Part Context

The SY89873L belongs to Micrel’s Precision Edge timing and distribution family. It is designed to provide frequency-locked, lower-speed auxiliary clocks from high-speed inputs. The device integrates internal termination for the differential input buffer, simplifying interface designs for various logic standards.

Replacement Considerations

For 2.5V LVDS applications, use SY89872U. For LVPECL output requirements, use SY89871U.