5PB1203NTGK8 - 1.8V 1:3 TCXO/LVCMOS Clock Buffer | Renesas
料号： 5PB1203NTGK8 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： 5PB1203NTGK8 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： 5PB1203NTGK8 （相同外形与封装尺寸） ——差异在于 Supply Voltage (VDD).
快速对比工具——选择替代料号进行并排对比：
5PB1203NTGK
✅ 直接替换✓ 有现货
$0.84 / 个
查看数据手册 →5PB1203CMGK
✅ 直接替换📋 参考替代料（不在目录中）
5PB1203CMGK8
✅ 直接替换📋 参考替代料（不在目录中）
5PB1102PGGK
✅ 直接替换📋 参考替代料（不在目录中）
SI52112-A00AGM
✅ 直接替换📋 参考替代料（不在目录中）
5PB1203NTGK8 规格参数
| Product Type | Clock Buffer / Fanout Driver |
| Fanout Ratio | 1 : 3 |
| Input Type | LVCMOS square wave or clipped sine wave (TCXO) |
| 输出类型 | LVCMOS |
| Maximum Output Frequency | 200 MHz |
| Supply Voltage (VDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| 工作温度范围 | -40 °C to +105 °C |
| Number of OE Pins | 3 (one per output) |
| 封装 | 10-WFDFN Exposed Pad |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
5PB1203NTGK8 引脚配置
| 引脚 1 | OE0 — Output Enable for CLKOUT0 (active logic per datasheet) |
| 引脚 2 | CLKIN — Reference clock input (LVCMOS square wave or clipped sine TCXO) |
| 引脚 3 | GND — Ground |
| 引脚 4 | VDD — Supply voltage (1.8 V nominal) |
| 引脚 5 | OE1 — Output Enable for CLKOUT1 |
| 引脚 6 | OE2 — Output Enable for CLKOUT2 |
| 引脚 7 | GND — Ground |
| 引脚 8 | CLKOUT0 — LVCMOS clock output 0 |
| 引脚 9 | CLKOUT1 — LVCMOS clock output 1 |
| 引脚 10 | CLKOUT2 — LVCMOS clock output 2 |
典型应用
5PB1203NTGK8 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： 5PB1203NTGK8 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Industry-leading low jitter and low quiescent current for mobile platforms （对比 Generic 1:3 LVCMOS fanout built from discrete logic gates)
- Clipped sine-wave TCXO input compatibility （对比 5PB1102PGGK (1:2, LVCMOS-only input))
- 1:3 fanout in compact 10-WFDFN Exposed Pad （对比 SI52112-A00AGM (1:2, 10-TDFN, 3.3 V))
设计说明
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.
合规信息
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.
