5PB1203NTGK8 - 1.8V 1:3 TCXO/LVCMOS Clock Buffer | Renesas
Артикул: 5PB1203NTGK8 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $1.33 | $1,33 |
| 10 | $1.2 | $12,00 |
| 100 | $1.05 | $105,00 |
| 500 | $0.92 | $460,00 |
| 1.000 | $0.78 | $780,00 |
5PB1203NTGK8 Обзор
A clock buffer (also called a fanout buffer or clock driver) is a timing component that receives a single reference clock and replicates it on multiple outputs while preserving edge fidelity, jitter, and skew. Clock buffers sit in the clock-distribution hierarchy between an oscillator or TCXO source and downstream loads such as SoCs, FPGAs, ASICs, PHY chips, and SerDes blocks. Compared with simple gate-based fanout, a dedicated buffer like the 5PB1203 provides controlled impedance, additive jitter in the femtosecond range, and per-output enable control, which are critical for mobile, networking, and industrial designs where power-rail sequencing and EMI must be tightly managed.
Key features of the 5PB1203NTGK8 include industry-leading low additive jitter, extremely low quiescent current consumption suitable for always-on mobile platforms, individual OE pins (OE0/OE1/OE2) for independent output gating, and support for both LVCMOS square-wave and clipped sine-wave TCXO inputs. The 10-WFDFN Exposed Pad package delivers a low thermal resistance path and minimizes PCB area on space-constrained wearables, smartphones, and IoT modules.
The 5PB1203 uses a low-noise differential input stage followed by matched output drivers with internal source termination, achieving additive RMS jitter in the sub-picosecond range when measured per the 12 kHz-to-20 MHz integration bandwidth defined in common telecom/datatelecom jitter masks. The three outputs are skew-matched within a few picoseconds, which simplifies timing closure in multi-domain SoCs that share a common reference.
Typical applications include smart mobile devices, wearables, IoT endpoints with GNSS, small-cell and femtocell base-station timing, networking line cards requiring redundant reference distribution, and PCIe/synchronous Ethernet PHY reference fanout. The clipped-sine input compatibility is especially useful where the upstream source is a TCXO instead of an LVCMOS oscillator.
When designing with the 5PB1203NTGK8, place the exposed-pad solder footprint directly under the IC and stitch it with thermal vias to the inner ground plane. Use a 0.1 µF ceramic decoupling capacitor within 2 mm of the VDD pin, and route CLKIN as a 50 Ω controlled-impedance trace. If a TCXO source is used, AC-couple the input and bias it according to the datasheet's recommended network to preserve duty cycle and minimize jitter.
This page consolidates distributor pricing, drop-in alternatives, and design guidance that are not aggregated on the manufacturer datasheet, giving engineers a single reference for sourcing, selection, and PCB implementation of the 5PB1203 family.
Аналоги без доработки для 5PB1203NTGK8 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с 5PB1203NTGK8 (тот же форм-фактор и посадочное место) — отличается по Supply Voltage (VDD).
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
5PB1203NTGK
✅ Прямая замена✓ В наличии
$0.84 / шт.
Открыть даташит →5PB1203CMGK
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
5PB1203CMGK8
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
5PB1102PGGK
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SI52112-A00AGM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
5PB1203NTGK8 Характеристики
| Product Type | Clock Buffer / Fanout Driver |
| Fanout Ratio | 1 : 3 |
| Input Type | LVCMOS square wave or clipped sine wave (TCXO) |
| Тип выхода | LVCMOS |
| Maximum Output Frequency | 200 MHz |
| Supply Voltage (VDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| Диапазон рабочих температур | -40 °C to +105 °C |
| Number of OE Pins | 3 (one per output) |
| Корпус | 10-WFDFN Exposed Pad |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов 5PB1203NTGK8
| Контакт 1 | OE0 — Output Enable for CLKOUT0 (active logic per datasheet) |
| Контакт 2 | CLKIN — Reference clock input (LVCMOS square wave or clipped sine TCXO) |
| Контакт 3 | GND — Ground |
| Контакт 4 | VDD — Supply voltage (1.8 V nominal) |
| Контакт 5 | OE1 — Output Enable for CLKOUT1 |
| Контакт 6 | OE2 — Output Enable for CLKOUT2 |
| Контакт 7 | GND — Ground |
| Контакт 8 | CLKOUT0 — LVCMOS clock output 0 |
| Контакт 9 | CLKOUT1 — LVCMOS clock output 1 |
| Контакт 10 | CLKOUT2 — LVCMOS clock output 2 |
Типичное применение
5PB1203NTGK8 подходит для 6 применениеs: Smart Mobile Device Reference Clock, Wearable and IoT Endpoint Timing, GNSS Receiver Clock Fanout, Networking PHY and Switch Reference Distribution, FPGA and ASIC Reference Clock Distribution, Automotive Infotainment and Telematics.
Smart Mobile Device Reference Clock
The 5PB1203NTGK8 distributes a 1.8 V reference clock to mobile application processors, modem basebands, and GNSS receivers. Its 1:3 fanout supports simultaneous delivery of a system clock, a GNSS reference, and a wireless radio reference from a single TCXO. The device's low additive jitter preserves phase-noise margins for LTE, 5G NR, and Bluetooth timing chains, while the small 10-WFDFN Exposed Pad footprint keeps the mobile PCB area below 9 mm².
Рекомендуется
Wearable and IoT Endpoint Timing
Wearables, fitness bands, and IoT endpoints rely on a single TCXO or low-power oscillator that must feed a Bluetooth radio, a microcontroller, and a sensor hub. The 5PB1203NTGK8's clipped-sine TCXO input accepts a direct AC-coupled TCXO output, while its three individually-enabled LVCMOS outputs let the host power-gate each downstream block independently. This combination delivers lowest quiescent current in sleep states and sub-picosecond jitter in active states for BLE and GNSS positioning accuracy.
Рекомендуется
GNSS Receiver Clock Fanout
In GNSS receivers (GPS, BeiDou, Galileo, GLONASS), a TCXO provides the reference that drives the RF front-end, the baseband processor, and the positioning engine. The 5PB1203NTGK8 accepts a clipped sine-wave TCXO reference on CLKIN and fans it out to three LVCMOS loads with matched skew, helping maintain carrier-phase coherence and improving first-fix accuracy. The 1.8 V supply matches typical GNSS chipset rails, eliminating the need for level translation.
Рекомендуется
Networking PHY and Switch Reference Distribution
Small-cell base stations, switches, and routers require clean reference clocks distributed to multiple Ethernet PHYs and timing ICs. The 5PB1203NTGK8 can take a 25 MHz, 50 MHz, or 156.25 MHz reference and fan it out to three downstream devices with controlled skew and low additive jitter, supporting SyncE-derived timing chains. The 1:3 ratio suits triple-PHY cards, and per-output OE enables graceful degradation when a downstream port is powered down.
Рекомендуется
FPGA and ASIC Reference Clock Distribution
FPGAs and high-performance ASICs often need multiple instances of the same reference clock routed to internal PLLs, transceivers, and block RAM controllers. The 5PB1203NTGK8 provides three matched LVCMOS outputs that can drive three clock input pins of the same FPGA or three separate ICs on the board. Its 200 MHz maximum frequency covers most embedded FPGA reference rates including 33 MHz, 50 MHz, 66 MHz, 100 MHz, and 200 MHz, while OE control simplifies power sequencing.
Рекомендуется
Automotive Infotainment and Telematics
The 5PB1203NTGK8's -40 °C to +105 °C operating range overlaps the automotive Grade 2 window, making it suitable for infotainment head units, telematics control units, and ADAS sensor hubs. The clipped-sine input accepts a TCXO commonly used in telematics for cellular positioning, while the three LVCMOS outputs clock the application processor, the audio DSP, and the Ethernet PHY. The exposed-pad package improves thermal performance in enclosed automotive enclosures.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для 5PB1203NTGK8 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 5PB1203NTGK | 5PB1203CMGK | 5PB1203CMGK8 | 5PB1102PGGK | SI52112-A00AGM |
|---|---|---|---|---|---|---|
| Package | 10-WFDFN Exposed Pad | 10-WFDFN Exposed Pad - same | 10-WFDFN Exposed Pad - same | 10-WFDFN Exposed Pad - same | 10-WFDFN Exposed Pad - same | 10-TDFN Exposed Pad - same footprint family |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Silicon Labs |
| Fanout Ratio | 1:3 | 1:3 | 1:3 | 1:3 | 1:2 | 1:2 |
| Input Type | LVCMOS / clipped sine TCXO | LVCMOS / clipped sine TCXO | LVCMOS / clipped sine TCXO | LVCMOS / clipped sine TCXO | LVCMOS | HCSL / LVDS differential |
| Output Type | LVCMOS | LVCMOS | LVCMOS | LVCMOS | LVCMOS | HCSL / LVDS |
| Per-Output OE | Yes (OE0/OE1/OE2) | Yes | Yes | Yes | Yes | Single OE |
Ключевые отличия
- Industry-leading low jitter and low quiescent current for mobile platforms (против Generic 1:3 LVCMOS fanout built from discrete logic gates)
- Clipped sine-wave TCXO input compatibility (против 5PB1102PGGK (1:2, LVCMOS-only input))
- 1:3 fanout in compact 10-WFDFN Exposed Pad (против SI52112-A00AGM (1:2, 10-TDFN, 3.3 V))
Заметки по проектированию
Solder the exposed thermal pad of the 5PB1203NTGK8 directly to a ground-plane pad with at least four thermal vias (0.3 mm diameter, 0.5 mm pitch) to provide a low-impedance return path for the high-frequency clock edges. Place a 0.1 µF X7R ceramic decoupling capacitor within 2 mm of the VDD pin and a bulk 1 µF ceramic in parallel for low-frequency noise rejection.
Route CLKIN as a 50 Ω controlled-impedance microstrip or stripline trace, keeping the run as short as possible and avoiding vias. Each CLKOUT trace should also be 50 Ω controlled-impedance and length-matched to within 2 mm of the longest trace to minimize output-to-output skew. Keep clock traces away from switching power-converter edges and high-current digital buses to avoid injected jitter.
If the upstream source is a clipped sine-wave TCXO, AC-couple CLKIN through a 1 nF capacitor and add the datasheet-recommended bias network to set the DC operating point. Do not drive the clipped sine-wave signal into a logic-threshold input that expects a full-swing square wave without the bias network; otherwise duty cycle will be distorted and additive jitter will rise significantly.
Do not leave any of the OE pins floating - each OE pin must be tied to a defined logic level (typically VDD for 'always enabled') to prevent indeterminate output behavior. Avoid back-driving the CLKOUT pins from external sources, as the 5PB1203NTGK8 outputs are not designed to tolerate external drive when OE is asserted low. Finally, verify that the downstream load on each CLKOUT does not exceed the datasheet's maximum capacitive load.
Информация о соответствии
RoHS and lead-free confirmed via Renesas product page; AEC-Q100 qualification status, halogen-free status, and conflict-minerals declaration are not explicitly stated in the verified distributor snippets - please consult the official Renesas datasheet and PCN for authoritative compliance certification.
