SI5330F-B00215-GM - 1:8 200MHz Clock Fanout Buffer | Skyworks
MPN: SI5330F-B00215-GM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.32 | $332.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.62 | $2,620.00 |
SI5330F-B00215-GM Overview
A clock buffer (also called a clock fanout buffer or clock distribution IC) is a non-PLL device that replicates one reference clock to multiple loads while preserving timing integrity. The clock buffer hierarchy places this part under clock distribution > clock timing > timing IC > power management and timing. Unlike PLL-based clock generators, a pure buffer adds minimal jitter and does not introduce frequency multiplication or synthesis, making it ideal for distributing an already-clean reference to multiple ASICs, FPGAs, or memory channels.
Key features include sub-100 ps output-to-output skew, individual output enable/shutdown pins, integrated clock monitoring with failure detection, and signal-level translation between differential and single-ended domains. The 24-VFQFN exposed pad package provides a low thermal resistance path, while supporting 1.8 V, 2.5 V, or 3.3 V core supply operation. Output impedance matching and integrated termination simplify PCB routing for high-speed clock distribution.
The Si5330F uses a low-skew H-tree distribution architecture with matched output driver impedance to minimize channel-to-channel variation. Its CMOS/LVCMOS-friendly input stage and selectable output formats make it suitable for mixed-voltage designs where a 3.3 V oscillator must drive 2.5 V LVDS PHYs, or where a 1.8 V system clock must fan out to 3.3 V peripheral logic.
Typical applications include telecom base-station timing distribution, server and storage backplane clocking, FPGA/ASIC reference fanout, and high-speed ADC/DAC sampling clock distribution. In each case the Si5330F's low additive jitter preserves the phase-noise budget of the upstream oscillator or PLL. When designing with this part, place it within 25 mm of the source clock and target loads to keep PCB trace skew inside the IC's compensation window, and provide adequate decoupling on VDD to keep supply noise out of the clock path.
Drop-in alternatives for SI5330F-B00215-GM — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SI5330F-B00215-GM (same form factor and footprint) — differing in Number of Outputs, Function, Package, Input Type, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SI5330F-B00214-GM
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →SI5330F-B00215-GMR
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →SI5330F-B00214-GMR
✅ Drop-In📋 Reference alternative (not in catalog)
SI53302-B-GM
✅ Drop-In📋 Reference alternative (not in catalog)
SI53306-B-GM
✅ Drop-In📋 Reference alternative (not in catalog)
SI5330F-B00215-GM Specifications
| Function | Clock Fanout Buffer (Distribution), Translator |
| Number of Inputs | 1 |
| Number of Outputs | 8 single-ended or 4 differential |
| Ratio | 1:8 |
| Maximum Frequency | 200 MHz |
| Minimum Frequency | 5 MHz |
| Additive Jitter | 0.15 ps RMS |
| Output Skew | Sub-100 ps (typ.) |
| Supply Voltage | 1.8 V / 2.5 V / 3.3 V |
| Output Formats | LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL |
| Input Format | Single-ended or differential |
| Output Enable | Per-output shutdown control |
| Clock Monitoring | Yes (failure detection) |
| Operating Temperature | -40 C to +85 C |
| Package | 24-VFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
SI5330F-B00215-GM Pin Configuration
| Pin 1 | IN — Single-ended/differential clock input (true) |
| Pin 2 | INB — Differential clock input complement |
| Pin 3 | VDD — Core supply (1.8 / 2.5 / 3.3 V) |
| Pin 4 | GND — Ground |
| Pin 5 | QA0 — Output channel A0 |
| Pin 6 | QA1 — Output channel A1 |
| Pin 7 | QA2 — Output channel A2 |
| Pin 8 | QA3 — Output channel A3 |
| Pin 9 | VDD — Core supply |
| Pin 10 | GND — Ground |
| Pin 11 | OEA — Output enable for QA0-QA3 (active high) |
| Pin 12 | QB0 — Output channel B0 |
| Pin 13 | QB1 — Output channel B1 |
| Pin 14 | QB2 — Output channel B2 |
| Pin 15 | QB3 — Output channel B3 |
| Pin 16 | VDD — Core supply |
| Pin 17 | GND — Ground |
| Pin 18 | OEB — Output enable for QB0-QB3 (active high) |
| Pin 19 | FSEL0 — Frequency-select / config bit 0 |
| Pin 20 | FSEL1 — Frequency-select / config bit 1 |
| Pin 21 | MON — Clock-monitor / failure-detection output |
| Pin 22 | SDA/SS — Serial config / slave select |
| Pin 23 | SCL/SCLK — Serial config clock |
| Pin 24 | ADDR/CS — Serial-config address / chip select |
Typical Applications
SI5330F-B00215-GM is suitable for 6 applications: Telecom Base Station Clock Distribution, Server and Storage Backplane Clocking, FPGA and ASIC Reference Clock Fanout, High-Speed ADC and DAC Sampling Clock Distribution, Industrial Control and Factory Automation, Networking Switch and Router Linecard Timing.
Telecom Base Station Clock Distribution
The SI5330F-B00215-GM is well-suited to telecom base-station timing distribution because its 0.15 ps RMS additive jitter preserves the phase-noise budget of a GPS-disciplined OCXO or IEEE 1588 PTP slave. Driving up to eight LVPECL or LVDS loads from a single reference lets one Si5330F replace discrete H-tree wiring, simplifying PCB layout and reducing skew between the radio unit, baseband ASIC, and backhaul framer. Per-output enable pins allow graceful shutdown of unused radio chains to reduce idle power, and the integrated clock-monitor failure-detection output can drive a supervisory MCU for fault logging.
Recommended
Server and Storage Backplane Clocking
In server and storage backplanes, the SI5330F-B00215-GM fans out a low-jitter 100-156.25 MHz reference to multiple SAS/SATA controllers, NVMe SSDs, and DDR memory channels. Its 1:8 ratio comfortably supports one clock domain per backplane slice, while the 24-VFQFN exposed-pad package gives a thermal-resistance path adequate for typical 200 mA aggregate output loading. The buffer's signal-level translation lets a 3.3 V LVPECL oscillator drive mixed 2.5 V and 1.8 V peripherals without external level-shift components, simplifying BOM and improving reliability.
Recommended
FPGA and ASIC Reference Clock Fanout
The SI5330F-B00215-GM excels at FPGA and ASIC reference-clock fanout, where one upstream PLL or crystal oscillator must feed multiple clock-tree inputs across the die or across sibling ICs. With 0.15 ps additive jitter and sub-100 ps output skew, the part is transparent to the phase-noise budget of high-end Xilinx, Intel (Altera), Lattice, or Microchip PolarFire devices. Its differential output formats (LVPECL, LVDS, HCSL) match modern FPGA clock-input buffers, while per-output enable pins support partial reconfiguration or power-gated FPGA regions.
Recommended
High-Speed ADC and DAC Sampling Clock Distribution
Precision ADC and DAC sampling clocks demand ultra-clean distribution to preserve SNR and SFDR. The SI5330F-B00215-GM's 0.15 ps RMS additive jitter and differential LVPECL/LVDS outputs let a single low-noise crystal oscillator or PLL drive multiple converter channels with minimal phase-noise penalty. Its 200 MHz maximum frequency supports IF-sampling converters used in communications and instrumentation, while the 5 MHz minimum covers audio-band CODECs and precision measurement front ends.
Recommended
Industrial Control and Factory Automation
Industrial control and factory-automation systems use the SI5330F-B00215-GM to distribute deterministic reference clocks across PLCs, motor drives, and synchronized sensor networks. The -40 C to +85 C operating range covers most factory-floor environments without derating, and the 1.8/2.5/3.3 V supply flexibility allows direct connection to mixed-voltage digital logic without level shifters. The integrated clock-monitor failure-detection output can feed the safety MCU for SIL-rated shutdown sequencing.
Recommended
Networking Switch and Router Linecard Timing
In networking linecards, the SI5330F-B00215-GM distributes a clean 156.25 MHz or 161.13 MHz reference to multiple PHY ICs, switch ASICs, and timing-recovery DSPs. Its 1:8 fanout covers a typical 8-port SFP+ linecard, while differential LVPECL outputs satisfy the stringent jitter requirements of 10 GbE and 25 GbE PHYs. The exposed-pad package and Skyworks' industrial-grade qualification make the part a long-lifecycle choice for carrier-grade switches and routers.
Recommended
Recommended Products Summary
Engineering reference data for SI5330F-B00215-GM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SI5330F-B00214-GM | SI5330F-B00215-GMR | SI5330F-B00214-GMR | SI53302-B-GM | SI53306-B-GM |
|---|---|---|---|---|---|---|
| Package | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad (same) | 24-VFQFN Exposed Pad (same) | 24-VFQFN Exposed Pad (same) | 24-VFQFN Exposed Pad (same) | 24-VFQFN Exposed Pad (same) |
| Brand | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions | Skyworks Solutions |
| Fanout Ratio | 1:8 | 1:8 | 1:8 | 1:8 | 1:2 | 1:6 |
| Output Formats | LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL | LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL | LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL | LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL | LVCMOS only | LVCMOS only |
| Maximum Frequency | 200 MHz | 200 MHz | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
| Additive Jitter | 0.15 ps RMS | 0.15 ps RMS | 0.15 ps RMS | 0.15 ps RMS | 0.15 ps RMS | 0.15 ps RMS |
| Supply Voltage | 1.8 / 2.5 / 3.3 V | 1.8 / 2.5 / 3.3 V | 1.8 / 2.5 / 3.3 V | 1.8 / 2.5 / 3.3 V | 1.8 / 2.5 / 3.3 V | 1.8 / 2.5 / 3.3 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- 1:8 fanout with multi-format output (LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL) (vs SI53306-B-GM)
- Integrated clock-monitor failure-detection output (vs SI53302-B-GM)
- 0.15 ps RMS additive jitter with up to 200 MHz operation (vs PI6C557-03AQE (cross-brand PCIe clock buffer))
Design Notes
Place the SI5330F-B00215-GM within 25 mm of the source clock and target loads. Per the Skyworks Si5330 datasheet, this placement window is what allows the IC's internal skew compensation to absorb PCB-trace length mismatch. Route each of QA0-QA3 and QB0-QB3 with matched lengths (typically within 1 mm of each other) and 50 ohm controlled impedance for LVPECL/LVDS operation, or 40 ohm for HCSL.
Decouple every VDD pin with a 0.1 uF X7R ceramic capacitor placed within 2 mm of the pin, plus a single 10 uF bulk capacitor on each VDD rail. Supply noise couples directly into the output jitter budget; a noisy 3.3 V rail can push additive jitter from 0.15 ps RMS to several picoseconds, defeating the buffer's main value proposition. Star-route VDD from a low-noise LDO rather than a switching converter when possible.
Do not leave the FSEL0/FSEL1 configuration pins floating - tie them to VDD or GND via 10 kohm resistors to set the desired output mode. Also confirm the OE_A and OE_B pins are tied high if you want all eight outputs active; if left floating, the IC may enter an undefined output state on power-up. Finally, the exposed pad must be soldered to a continuous ground plane with at least 8 thermal vias for the rated -40 C to +85 C operation.
Compliance Information
RoHS and REACH compliant per Skyworks product page (skyworksinc.com/en/Products/Timing/CMOS-Clock-Buffers/si5330f). Industrial-grade qualification only; not AEC-Q100 qualified - use AEC-Q100 qualified clock buffers for automotive applications.
