8SLVP1212ANLGI - 2:12 LVPECL Fanout Buffer, 2 GHz | Renesas
MPN: 8SLVP1212ANLGI ✓ Aktif8SLVP1212ANLGI Ringkasan
What is a clock fanout buffer? It is a clock distribution IC that replicates a single reference clock across multiple outputs while preserving edge fidelity, skew, and phase noise. Fanout buffers sit between a clock source (crystal oscillator, PLL, or upstream serializer) and downstream loads (FPGA transceivers, ADC/DAC sample clocks, switch fabric, DSP cores), forming a tier of the broader clock-tree hierarchy: clock source -> fanout buffer -> clocked loads. Their primary engineering value is guaranteeing output-to-output skew, part-to-part skew, and additive jitter so that multi-channel systems stay synchronized.
Key features of the 8SLVP1212ANLGI include guaranteed low output-to-output skew, very low additive phase noise for high-frequency clock distribution, internal termination on LVPECL inputs for impedance matching, and an operating temperature range of -40 °C to +85 °C. The differential LVPECL I/O swings (~800 mV) reject common-mode noise on the clock traces, which is essential across long PCB routes in multi-board chassis. Power consumption is dominated by the twelve LVPECL output drivers; the exposed-pad package is required for continuous full-load operation.
Typical applications include clock distribution in high-speed telecommunications line cards, multi-channel ADC/DAC sampling systems, FPGA reference clock networks, storage area network (SAN) switches, and high-end test-and-measurement instrumentation. When laying out the PCB, place the device close to the clock source to minimize input trace length, route the LVPECL outputs as 100 Ω differential pairs, and stitch the VFQFN-EP exposed pad with multiple thermal vias for thermal relief under maximum load. This page synthesizes distributor pricing, drop-in alternatives, and PCB layout guidance not found in the manufacturer datasheet.
Alternatif penggantian untuk 8SLVP1212ANLGI — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
8SLVP1212ANLGI/W
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
8SLVP1212ANLGI8
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
8SLVP1212ANLGI Spesifikasi
| Fungsi | Clock Fanout Buffer (Distribution) |
| Input:Output Ratio | 2:12 (differential input -> 12 differential LVPECL outputs) |
| Tipe Output | LVPECL (differential) |
| Input Type | LVPECL (differential) |
| Maximum Toggle Frequency | 2 GHz |
| Tegangan Pemuat | 3.3 V or 2.5 V |
| Jumlah Output | 12 (6 differential pairs) |
| Input Termination | Internal LVPECL termination |
| Rentang Suhu Kerja | -40 °C to +85 °C |
| Paket | 40-VFQFN Exposed Pad (NLG, 6 mm × 6 mm) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Konfigurasi Pin 8SLVP1212ANLGI
| Pin produk 1 | Q0 — LVPECL differential output 0 (true) |
| Pin produk 2 | Q0B — LVPECL differential output 0 (complement) |
| Pin produk 3 | VCC — Power supply (3.3 V or 2.5 V) |
| Pin produk 4 | Q1 — LVPECL differential output 1 (true) |
| Pin produk 5 | Q1B — LVPECL differential output 1 (complement) |
| Pin produk 6 | GND — Ground |
| Pin produk 7 | Q2 — LVPECL differential output 2 (true) |
| Pin produk 8 | Q2B — LVPECL differential output 2 (complement) |
| Pin produk 9 | Q3 — LVPECL differential output 3 (true) |
| Pin produk 10 | Q3B — LVPECL differential output 3 (complement) |
| Pin produk 11 | VCC — Power supply (3.3 V or 2.5 V) |
| Pin produk 12 | Q4 — LVPECL differential output 4 (true) |
| Pin produk 13 | Q4B — LVPECL differential output 4 (complement) |
| Pin produk 14 | GND — Ground |
| Pin produk 15 | Q5 — LVPECL differential output 5 (true) |
| Pin produk 16 | Q5B — LVPECL differential output 5 (complement) |
| Pin produk 17 | Q6 — LVPECL differential output 6 (true) |
| Pin produk 18 | Q6B — LVPECL differential output 6 (complement) |
| Pin produk 19 | VCC — Power supply (3.3 V or 2.5 V) |
| Pin produk 20 | Q7 — LVPECL differential output 7 (true) |
| Pin produk 21 | Q7B — LVPECL differential output 7 (complement) |
| Pin produk 22 | GND — Ground |
| Pin produk 23 | Q8 — LVPECL differential output 8 (true) |
| Pin produk 24 | Q8B — LVPECL differential output 8 (complement) |
| Pin produk 25 | Q9 — LVPECL differential output 9 (true) |
| Pin produk 26 | Q9B — LVPECL differential output 9 (complement) |
| Pin produk 27 | VCC — Power supply (3.3 V or 2.5 V) |
| Pin produk 28 | Q10 — LVPECL differential output 10 (true) |
| Pin produk 29 | Q10B — LVPECL differential output 10 (complement) |
| Pin produk 30 | GND — Ground |
| Pin produk 31 | Q11 — LVPECL differential output 11 (true) |
| Pin produk 32 | Q11B — LVPECL differential output 11 (complement) |
| Pin produk 33 | VCC — Power supply (3.3 V or 2.5 V) |
| Pin produk 34 | CLK_IN — LVPECL differential clock input (true) |
| Pin produk 35 | CLK_INB — LVPECL differential clock input (complement) |
| Pin produk 36 | GND — Ground |
| Pin produk 37 | NC — Not connected (per datasheet) |
| Pin produk 38 | NC — Not connected (per datasheet) |
| Pin produk 39 | NC — Not connected (per datasheet) |
| Pin produk 40 | NC — Not connected (per datasheet) |
Aplikasi Umum
8SLVP1212ANLGI cocok untuk 6 aplikasis: FPGA Reference Clock Distribution, High-Speed ADC/DAC Sampling Clock Network, Telecom Line Card Clock Fanout, Storage Area Network Switch Fabric Clocking, Test & Measurement Instrumentation, Server Motherboard Clock Distribution.
FPGA Reference Clock Distribution
The 8SLVP1212ANLGI distributes a single low-jitter reference clock across up to 12 LVPECL loads feeding FPGA transceiver banks, GT/GX clock pins, and fabric clock trees. With 2 GHz toggle rate and very low additive phase noise, it preserves the source oscillator's spectral purity while minimizing deterministic jitter. The 40-VFQFN-EP exposed pad enables reliable thermal dissipation when all 12 outputs drive 100 Ω differential lines. Recommended companion MPNs: SI53112-A00AGM (clock multiplier), 88X5113-A1-BVW4C000 (PHY needing reference clock).
Direkomendasikan
High-Speed ADC/DAC Sampling Clock Network
The 8SLVP1212ANLGI provides low-skew LVPECL sampling clocks to multi-channel ADC and DAC arrays in radar, software-defined radio, and instrumentation systems. Its guaranteed output-to-output skew keeps inter-channel phase mismatch minimal, which directly improves beamforming accuracy and spurious-free dynamic range. The 3.3 V/2.5 V supply flexibility allows direct interfacing with mixed-voltage ADC clock inputs. Recommended companion MPNs: 24LC512T-I/SM (calibration EEPROM), KSZ9893RNXI (Ethernet switch for data backhaul).
Direkomendasikan
Telecom Line Card Clock Fanout
In SONET/SDH, OTN, and Ethernet line cards, the 8SLVP1212ANLGI replicates a backplane reference clock to multiple framer/mapper ASICs, mappers, and SERDES channels. Its 2 GHz toggle capability supports 10G/25G/100G SERDES reference requirements, while internal LVPECL input termination eliminates the need for external resistor networks. Operating across -40 °C to +85 °C, it satisfies the industrial temperature range typical of telecom outdoor equipment. Recommended companion MPNs: KSZ9893RNXI (managed Ethernet switch), PIC32MZ2048EFM144T-I/PL (control plane MCU).
Direkomendasikan
Storage Area Network Switch Fabric Clocking
The 8SLVP1212ANLGI distributes low-jitter clocks to PCIe switch fabrics, SAS expander chips, and NVMe controller ASICs in storage area network switches and RAID arrays. Its 12 LVPECL outputs can drive multiple switch chips with deterministic skew, ensuring consistent link-training timing across all lanes. The exposed-pad VFQFN package supports continuous operation in thermally constrained 1U chassis. Recommended companion MPNs: PIC32MZ2048ECM100T-I/PT (storage controller MCU), AP63205WU-7 (point-of-load DC-DC).
Direkomendasikan
Test & Measurement Instrumentation
The 8SLVP1212ANLGI serves as a precision clock fanout in oscilloscopes, signal analyzers, and arbitrary waveform generators. Its low additive phase noise preserves the integrity of synthesized or recovered signals under test, while 12 outputs allow a single source to drive multiple internal digitizers and DACs simultaneously. The part-to-part skew guarantee ensures instrument-to-instrument timing correlation in production test racks. Recommended companion MPNs: MCP6S28-I/SL (programmable gain amp for signal conditioning), 24FC1025-I/SN (instrument calibration storage).
Direkomendasikan
Server Motherboard Clock Distribution
The 8SLVP1212ANLGI drives multiple PCIe slots, memory controllers, and BMC chips from a single server-board reference clock. Its LVPECL signaling rejects common-mode noise across the backplane, while the small 6 mm × 6 mm VFQFN-EP footprint conserves board area versus discrete buffer arrays. Operating up to 2 GHz, it supports PCIe Gen5/Gen6 reference-clock rates. Recommended companion MPNs: PIC32MZ2048EFH100T-I/PT (BMC MCU), AP63205WU-7 (point-of-load regulator).
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk 8SLVP1212ANLGI — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 8SLVP1212ANLGI/W | 8SLVP1212ANLGI8 |
|---|---|---|---|
| Package | 40-VFQFN Exposed Pad (NLG) | 40-VFQFN Exposed Pad (NLG) | 40-VFQFN Exposed Pad (NLG) |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Function | 2:12 LVPECL Fanout Buffer | 2:12 LVPECL Fanout Buffer | 2:12 LVPECL Fanout Buffer |
| Number of Outputs | 12 (differential LVPECL) | 12 (differential LVPECL) | 12 (differential LVPECL) |
| Maximum Toggle Frequency | 2 GHz | 2 GHz | 2 GHz |
| Supply Voltage | 3.3 V or 2.5 V | 3.3 V or 2.5 V | 3.3 V or 2.5 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Packaging Form | Tray / cut tape | Tape & Reel | Tape & Reel |
Diferensiator Kunci
- Twelve LVPECL outputs from one differential input pair (vsStandard 1:4 or 1:8 clock buffers)
- 2 GHz toggle rate with very low additive phase noise (vsGeneral-purpose CMOS clock buffers)
- Internal LVPECL input termination (vsDiscrete LVPECL buffers requiring external bias resistors)
Catatan Desain
Route all 12 LVPECL outputs as 100 Ω differential pairs with tightly matched lengths; target intra-pair skew under 5 mils and pair-to-pair skew under 50 mils to meet the datasheet output-to-output skew budget. Place the 8SLVP1212ANLGI close to the upstream reference oscillator or PLL to minimize the input trace length and avoid coupling noise from adjacent aggressors. Use series AC-coupling capacitors near the driver end of each output pair as recommended by LVPECL interface practice.
Estimated: With all 12 LVPECL outputs driving 100 Ω loads at 2 GHz, total power dissipation is dominated by output-driver current; the VFQFN-EP exposed pad must be soldered directly to a large copper pour stitched with multiple thermal vias to the internal ground plane. Without the thermal pad soldered, junction temperature can exceed 125 °C under full output load. Always follow the Renesas PCB layout recommended land pattern exactly.
Decouple each VCC pin with a 0.1 µF low-ESL ceramic capacitor placed within 100 mils of the pin; add a single 10 µF bulk capacitor near the supply entry point. The 8SLVP1212ANLGI supports both 3.3 V and 2.5 V operation from the same pins, but mixing supply voltages between VCC rails on the same part is not permitted - all VCC pins must operate at the same nominal voltage.
Do not leave the LVPECL complementary outputs floating; both Qn and QnB must be terminated to provide the bias current path. Missing terminations cause output stage oscillation and can damage the device. Avoid routing LVPECL outputs over splits in the reference planes - reference plane transitions introduce common-mode noise that LVPECL cannot fully reject.
Informasi Konformitas
RoHS and REACH compliant per Renesas product page. Industrial temperature grade (-40 °C to +85 °C); not AEC-Q100 qualified - this part targets commercial and industrial, not automotive. Halogen-free and lead-free per Renesas compliance disclosures.
