SI5332H-D-GM1 - 6-Output Any-Frequency Clock Gen | Skyworks
MPN: SI5332H-D-GM1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.8 | $22.80 |
| 10 | $20.52 | $205.20 |
| 100 | $18.24 | $1,824.00 |
| 500 | $16.42 | $8,210.00 |
| 1,000 | $14.95 | $14,950.00 |
SI5332H-D-GM1 Overview
A clock generator is an integrated circuit that synthesizes one or more precise timing references from a single input reference, replacing multiple crystal oscillators and PLLs in a system. Within the broader silicon taxonomy it sits as: clock generator -> timing IC -> clock and timing subsystem -> power management and analog mixed-signal IC -> semiconductor. By consolidating multiple clock domains onto a single I2C-programmable device, the SI5332H-D-GM1 reduces BOM count, PCB area, and the long-term reliability risks of multi-crystal designs.
Key features include any-frequency output synthesis on six differential or single-ended outputs, hardware configuration input pins for boot-time setup, per-output voltage domains (VDDO) for level translation, an I2C control interface, and integer (INT) divider support. Internal MultiSynth fractional dividers provide sub-Hz frequency resolution while maintaining low phase noise, and the integrated crystal reference eliminates an external timing component.
Typical applications include 10/25/40/100G data center communications equipment, industrial Ethernet switches and routers, FPGA and ASIC reference clock trees, broadcast video timing, and any multi-rail system requiring jitter-clean fanout. The wide frequency range and flexible output formats make it a strong fit where multiple unrelated clock frequencies must be derived from a single reference.
When designing with this device, place the bypass capacitors as close as possible to each VDDO pin to minimize output jitter degradation, and follow Skyworks' reference manual layout for the exposed pad to achieve the rated thermal performance. The I2C address is hardware-configurable via input pins, so plan address strapping early in the schematic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the Skyworks datasheet PDF, with cross-references to the Si5332 family reference manual for register-level configuration details.
Drop-in alternatives for SI5332H-D-GM1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SI5332H-D-GM1R
✅ Drop-In📋 Reference alternative (not in catalog)
SI5332H-D-GM2
✅ Drop-In📋 Reference alternative (not in catalog)
SI5332H-D-GM3
✅ Drop-In📋 Reference alternative (not in catalog)
SI5332G-D-GM1
✅ Drop-In📋 Reference alternative (not in catalog)
SI5332HD13712-GM1
✅ Drop-In📋 Reference alternative (not in catalog)
SI5332H-D-GM1 Specifications
| Function | Any-frequency clock generator |
| Number of Outputs | 6 |
| Output Frequency Range | Up to 200 MHz (per Mouser listing); up to 250 MHz (per LCSC/JLCPCB) |
| RMS Jitter | 190 fs typical (per Si5332 family datasheet) |
| Input Frequency Range | Differential: 10 MHz to 250 MHz (per family datasheet) |
| Core Supply Voltage | 1.8 V to 3.3 V |
| Output Supply Voltage (VDDO) | Per-output, level-translated |
| Control Interface | I2C |
| Package | 32-QFN-EP (5x5 mm) with exposed pad |
| Embedded Crystal | Yes (per Mouser description) |
| Synthesizer Type | MultiSynth fractional divider |
| Output Formats | Differential or single-ended |
| Operating Temperature | -40C to +85C |
| Mounting Type | Surface Mount |
| Compliance | RoHS compliant (per JLCPCB listing) |
SI5332H-D-GM1 32-qfn-ep (5x5 mm) with exposed pad Pin Configuration Guide
Pin configuration for SI5332H-D-GM1 (32-qfn-ep (5x5 mm) with exposed pad package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for SI5332H-D-GM1.
Refer to the datasheet for full pin configuration.
Typical Applications
SI5332H-D-GM1 is suitable for 7 applications: 10/25/40/100G Data Center Communications, Industrial Ethernet Switches and Routers, FPGA and ASIC Reference Clock Trees, Broadcast Video and Professional AV Timing, Test and Measurement Instrumentation, Server and Storage Backplane Timing, Medical Imaging and Diagnostic Equipment.
10/25/40/100G Data Center Communications
The SI5332H-D-GM1's 190 fs RMS jitter and any-frequency MultiSynth synthesis make it ideal for clock-tree consolidation in 10/25/40/100G Ethernet switches, routers, and optical transceivers, where a single reference can fan out to PHY, SERDES, and FPGA SerDes reference inputs. The 32-QFN-EP (5x5 mm) footprint fits dense line-card layouts while individual VDDO pins provide level translation between 1.8 V PHY rails and 3.3 V FPGA rails. Pair with Skyworks Si5518 or Si53204 for jitter-cleaning of upstream references, and with high-speed PHYs such as the BCM82764 for 100G retimer applications.
Recommended
Industrial Ethernet Switches and Routers
Industrial Ethernet platforms require multiple unrelated frequencies (e.g., 25 MHz PHY reference, 50 MHz CPU clock, 125 MHz SerDes reference) generated from one timing source. The SI5332H-D-GM1 consolidates six of these onto a single I2C-programmable device, eliminating 4-5 discrete crystal oscillators. Its -40C to +85C industrial temperature range and embedded crystal (no external XTAL aging risk) suit factory-floor deployments. Per-output VDDO supports direct connection to 1.8 V, 2.5 V, and 3.3 V logic domains without level shifter ICs.
Recommended
FPGA and ASIC Reference Clock Trees
FPGAs typically need three or more reference clocks (e.g., 100 MHz system clock, 156.25 MHz SerDes reference, 25 MHz management clock) generated from one upstream TCXO or OCXO. The SI5332H-D-GM1 takes a single 10-250 MHz differential reference and synthesizes all of these with sub-Hz resolution via MultiSynth fractional dividers, while its 190 fs RMS jitter comfortably meets the stringent phase-noise masks of Xilinx and Intel/Altera SerDes reference inputs. The I2C interface enables dynamic frequency reconfiguration for FPGA prototyping platforms that test multiple SerDes rates.
Recommended
Broadcast Video and Professional AV Timing
Broadcast video routers and studio timing generators require pixel clocks at multiple rates (27 MHz for SD-SDI, 74.25 MHz for 720p, 148.5 MHz for 1080p, 297 MHz for UHD-SDI) derived from a single studio reference (typically 27 MHz or 10 MHz). The SI5332H-D-GM1's any-frequency synthesis supports all of these with the jitter performance required to stay well within SMPTE 259M/292M/424M timing budgets. Hardware configuration input pins enable boot-time setup of the studio's preferred frequency plan without firmware intervention.
Recommended
Test and Measurement Instrumentation
Test equipment (oscilloscopes, signal generators, spectrum analyzers) needs multiple unrelated low-jitter references: ADC sampling clocks at hundreds of MHz, FPGA fabric clocks, DAC clocks, and synchronization references. The SI5332H-D-GM1's 190 fs RMS jitter and any-frequency MultiSynth synthesis let designers replace 4-5 ultra-low-noise discrete PLL/VCO combinations with a single IC, simplifying calibration and BOM. The hardware configuration pins also support test-only frequency plans in manufacturing fixtures without I2C scripting.
Recommended
Server and Storage Backplane Timing
NVMe SSDs, SAS/SATA controllers, and PCIe Gen4/Gen5 retimers all require clean reference clocks that the SI5332H-D-GM1 can synthesize from one shared crystal. The per-output VDDO pins let the device drive 0.9 V, 1.0 V, 1.2 V, 1.8 V, and 3.3 V logic domains simultaneously, eliminating level shifter ICs on backplane designs. The 32-QFN-EP (5x5 mm) footprint with central exposed pad manages the 1-1.5 W typical dissipation comfortably in airflow-cooled chassis.
Recommended
Medical Imaging and Diagnostic Equipment
Ultrasound, CT, and MRI systems demand multi-domain low-jitter timing (e.g., beamformer ADC clocks, channel ASIC clocks, video display clocks, Ethernet PHY clocks). The SI5332H-D-GM1's six independently programmable outputs let medical designers consolidate a 4-5 IC clock tree into one device, while its -40C to +85C range covers most clinical and laboratory environments. The embedded crystal eliminates the long-term aging concerns that drive medical equipment through expensive periodic calibration cycles.
Recommended
Recommended Products Summary
Engineering reference data for SI5332H-D-GM1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SI5332H-D-GM1R | SI5332H-D-GM2 | SI5332H-D-GM3 | SI5332G-D-GM1 | SI5332HD13712-GM1 |
|---|---|---|---|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions |
| Package | 32-QFN-EP (5x5 mm) | 32-QFN-EP (5x5 mm) - same | 40-pin QFN - different footprint | 48-TFLGA Exposed Pad - different footprint | 32-QFN-EP (5x5 mm) - same | 32-QFN-EP (5x5 mm) - same |
| Number of Outputs | 6 | 6 | 8 | 12 | 6 | 6 |
| Embedded Crystal | Yes | Yes | Yes | Yes | Yes | Yes |
| Control Interface | I2C | I2C | I2C | I2C | I2C | I2C |
| Pin-to-Pin Compatible | Yes (target) | Yes | No (40-pin QFN) | No (48-TFLGA) | Yes | Yes |
Key Differentiators
- Embedded crystal reference reduces BOM and aging risk (vs Discrete TCXO + PLL designs)
- 190 fs RMS jitter exceeds most discrete PLL/VCO clock trees (vs Typical PLL-based clock generator ICs)
- 6 independently programmable any-frequency outputs in 32-QFN-EP (5x5 mm) (vs Multi-IC discrete oscillator + fanout buffer approach)
Design Notes
Place bypass capacitors (0.1 uF X7R plus 10 uF bulk) as close as possible to each VDDO pin and the core VDD pin to minimize power-rail noise coupling into the MultiSynth loops. Keep the input reference traces short and impedance-matched (typically 100 ohm differential) to avoid reference jitter from being amplified into output jitter. The exposed thermal pad MUST be soldered to a continuous ground plane with thermal vias for heat dissipation.
Per the Si5332 Reference Manual, route clock output traces as 100 ohm differential pairs with matched lengths within each pair, and isolate clock outputs from noisy digital traces. Avoid right-angle bends; use 45-degree bends or curves to maintain impedance continuity. Place the input reference clock generator (TCXO/OCXO) close to the SI5332H-D-GM1 input pins to minimize reference trace length.
Do not assume the SI5332H-D-GM1 and SI5332H-D-GM3 share a pinout: the GM3 is a 48-TFLGA with 12 outputs and has a different pinout, so it is NOT a drop-in replacement on the same PCB. Similarly, verify that any factory-programmed variant (e.g., SI5332HD13712-GM1) has the same frequency plan your application expects; ordering a different factory code yields a non-functional board without I2C reprogramming capability.
Estimated: With all 6 outputs driving 100 MHz LVDS into 100 ohm loads (typical 10 mA per output), total supply current is approximately 200-250 mA. With a 3.3 V VDD, power dissipation is around 700-800 mW, manageable in the 32-QFN-EP package with proper thermal pad soldering and a small airflow. For 3.3 V VDDO outputs driving 33 mA each, total dissipation can rise to 1.5 W - derate accordingly in sealed enclosures.
Compliance Information
RoHS compliance confirmed by JLCPCB parts listing. AEC-Q100 not applicable - this is a commercial/industrial timing IC, not an automotive-qualified part. Halogen-free status and REACH compliance should be verified on the Skyworks product page or via manufacturer material declaration.
