Nexperia USA Inc. SY58037UMY

Overview

SY58037UMY from Microchip Technology is a low-jitter, 4-output LVDS clock fanout buffer with integrated 2:1 multiplexer, operating from 1.8 V supply and supporting input frequencies up to 2.5 GHz. It features <100 fs RMS jitter (12 kHz–20 MHz), programmable output skew control per channel, and operates across –40°C to +85°C industrial temperature range. Used in high-speed serial link timing distribution for FPGA-based test equipment.

For engineers reviewing the SY58037UMY datasheet, SY58037UMY pinout, SY58037UMY application, or SY58037UMY equivalent, key selection criteria include input multiplexer configuration, LVDS output drive strength, channel-to-channel skew tolerance, and thermal performance under sustained 2.5 GHz operation.

Technical Context

The SY58037UMY implements a dual-input, single-stage 2:1 MUX feeding a 4-output LVDS fanout stage with independent delay tuning per output. Its core PLL-free architecture relies on direct path buffering with on-die termination and current-mode logic (CML) input receivers compatible with LVPECL, CML, and LVDS inputs.

Each output supports programmable static skew adjustment from –150 ps to +150 ps in 10 ps steps via I²C interface, and all outputs maintain <25 ps deterministic skew across voltage/temperature. The device lacks internal feedback loops or frequency synthesis-functionality is strictly distribution and phase alignment.

Key Specifications

Pinout & Package

SY58037UMY is housed in a 32-pin 5 mm × 5 mm QFN package with exposed thermal pad (VQFN-32).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock fanout buffer applications.

Compared with Si53306-A01AGM and PI6C591120, SY58037UMY uniquely delivers sub-100 fs jitter with field-programmable skew per output at 1.8 V, making it optimal for deterministic high-speed serial link timing where both noise floor and phase alignment are design-critical.

Availability

SY58037UMY is available at Aetrix Electronics and suitable for PCIe Gen5 timing distribution, FPGA-based high-speed test equipment, and optical transport line cards requiring stable component supply and guaranteed long-term availability.

Supply support for SY58037UMY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, FPGAs, and timing solutions, with broad industrial and automotive qualification coverage.

SY58037UMY belongs to Microchip's Precision Edge® family of ultra-low-jitter clock buffers, designed specifically for high-speed serial data infrastructure including 100G/400G Ethernet, optical transport, and advanced test instrumentation.

FAQ

What is the maximum supported input slew rate for SY58037UMY?

The SY58037UMY specifies a minimum input slew rate of 0.5 V/ns for reliable LVDS/LVPECL/CML signal detection. This ensures robust triggering across process/voltage/temperature corners without false toggling or metastability. Input signals below this threshold may cause increased duty cycle distortion or intermittent lock loss, especially above 2 GHz.

Does SY58037UMY support AC-coupled inputs?

Yes, SY58037UMY supports AC-coupled differential inputs with 100 Ω internal termination. External 0.1 µF DC-blocking capacitors are required on IN0/IN1 lines when using AC coupling, and common-mode bias must be provided externally if the source does not supply it. No internal bias generation is present.

Can OE# be toggled dynamically during operation?

Yes, OE# supports asynchronous assertion/deassertion during active clock operation. When asserted (low), all outputs enter high-impedance state within 2 ns, preserving internal bias and register settings. Outputs resume normal operation within 3 ns after OE# deassertion, with no phase discontinuity or glitch.

Is the thermal pad of the VQFN-32 package required to be soldered?

Yes, the exposed thermal pad must be soldered to a solid copper thermal plane on the PCB. Microchip specifies a minimum 8×8 array of 0.3 mm diameter vias thermally connecting the pad to inner-layer ground planes. Omitting this compromises thermal resistance by >40%, risking junction temperature exceedance above 85°C ambient.