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SI5342B-D-GM

Name: SI5342B-D-GM
Rating: 4.7 (12 reviews)

IC JITTER ATTENUATOR/MULTIPLEXER

メーカー
Mfr。パート #SI5342B-D-GM
パッケージ 44-VFQFN Exposed Pad
データシート SI5342B-D-GM DataSheet
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仕様

Supplier	Skyworks Solutions Inc.
Package	Tray
ProductStatus	Active
PLL	Yes
Input	LVCMOS, LVDS, LVPECL, Crystal
Output	CML, HCSL, LVCMOS, LVDS, LVPECL
NumberofCircuits	1
Ratio-Input:Output	5:2
Differential-Input:Output	Yes/Yes
Frequency-Max	350MHz
Divider/Multiplier	Yes/No
Voltage-Supply	1.71V ~ 3.47V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	44-VFQFN Exposed Pad

概要

Description

Si5342B-D-GM is Silicon Labs’ jitter-cleaning, programmable clock generator. It takes a reference clock (XIN) and produces multiple low-jitter output clocks at programmable frequencies, using internal PLLs/MultiSynth engines. Features typically include I2C control for dynamic frequency changes, spread-spectrum support, and options for holdover. The suffix "-B" denotes a device revision, while "D-GM" encodes package/grade specifics (packaging, RoHS, etc.). It’s used to generate clean clock sources for high-speed PHYs, data converters, networking, PCIe/USB/HDMI interfaces, and other systems that require precise, configurable clocks. For exact output counts, frequency ranges, jitter performance, supply voltages, and package details, consult the Si5342 datasheet and the ClockBuilder Pro design tool.

Features

Key features of SI5342B-D-GM:
- Any-Rate, Any-Output clock generator with multiple outputs (up to 8 configured outputs from a single reference).
- Two programmable PLLs with fractional-N synthesis for flexible, precise frequency generation.
- Flexible reference input: supports crystal or external reference sources (ref clock can be used to derive all outputs).
- Output format versatility: drives can be configured as LVCMOS, LVDS, LVPECL, CML/HCSL; programmable drive strength and slew per output.
- I2C control interface for full dynamic programming; non-volatile memory stores configuration for quick re-load.
- Jitter and EMI features: low jitter performance, optional spread-spectrum clocking to reduce EMI.
- Power management and monitoring: individual output enable/power-down, lock detect, fault/status monitoring.
- Industrial temperature range and RoHS-compliant package: -40°C to +85°C; package variant -GM.
Note: See datasheet for exact pinout, voltage rails, and supported reference frequencies.

Package

A 32‑pin QFN package (5×5 mm).

Pinout

- Pin count: 24-pin QFN (GM RoHS package)
- Function: High‑precision clock generator/distributor with jitter‑attenuating PLLs; produces multiple low‑jitter clock outputs from a reference clock, controllable via I2C.

Manufacturer

Manufacturer: Silicon Labs (Silicon Laboratories, Inc.). It is a fabless semiconductor company that designs and sells mixed-signal integrated circuits, including clock generation and timing devices for embedded systems.

Application

Si5342B-D-GM is a high-performance, multi-output clock generator and jitter cleaner. It accepts one reference clock and provides multiple low-jitter outputs with programmable frequencies. Typical applications: clock generation/distribution for FPGAs/ASICs; high-speed SerDes interfaces (PCIe, SATA, USB, Ethernet, HDMI); telecom and data-communications timing networks; servers/data centers; test/measurement equipment; automotive/industrial timing environments.

Equivalent

There isn’t an exact one‑to‑one substitute for SI5342B-D-GM. Closest options:
- Within Silicon Labs: other Si534x clock generators (e.g., Si5341/Si5342/Si5344 variants) with similar interfaces.
- Cross reference: IDT ICS5342 (and related ICS parts) designed for multi-output clock generation.
For a true drop‑in, compare output count, frequencies, jitter, power, packaging, and I2C control; use distributor cross-reference tools to confirm replacements.