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Renesas XUH536156.257000I
- Part No.:
- XUH536156.257000I
- Manufacturer:
- Renesas
- Category:
- Oscillators
- Package:
- 6-SMD, No Lead
- Datasheet:
-
XUH536156.257000I.pdf
- Description:
- XUH5 5032 HCMOS XO LOW JITTER
- Quantity:
- Payment:
- Shipping:
Inventory:7,119
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Product details
Overview
XUH536156.257000I from Renesas Electronics is a quartz-based PLL oscillator delivering 156.257 MHz output with LVDS interface, ±25 ppm frequency stability over -40°C to +85°C, and 3.3 V supply. It features low phase jitter (300 fs typical, 12 kHz–20 MHz), fast 10 ms start-up time, and operates in a 5.0 × 3.2 mm JS6 package - used in high-speed SerDes clocking for Ethernet PHYs and FPGA transceivers.
For engineers reviewing the XUH536156.257000I datasheet, XUH536156.257000I pinout, XUH536156.257000I application, or XUH536156.257000I equivalent, this device serves as a precision timing source requiring stable jitter performance, industrial-temperature operation, LVDS differential signaling compatibility, and drop-in replacement readiness for legacy Renesas XU-family oscillators.
Technical Context
The XUH536156.257000I implements a quartz crystal–referenced PLL architecture with one-time-programmable (OTP) configuration, enabling precise 156.257 MHz synthesis without external components. Its LVDS output complies with ANSI TIA/EIA-644-A, delivering 0.25–0.5 V differential swing into 100 Ω loads.
It supports enable/disable control via Pin 1 (E/D), internally pulled high to enable output; logic-low disables output. Power integrity is maintained using a mandatory 0.01 μF bypass capacitor between VDD (Pin 6) and GND (Pin 3), per layout guidance in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 156.257000 MHz - exact value programmed at factory; supports IEEE 802.3an (10GBASE-T) reference clocking. |
| Output Interface | LVDS - differential signaling with 0.25–0.5 V swing, 45–55% duty cycle, compatible with FPGA/ASIC differential clock inputs. |
| Frequency Stability | ±25 ppm - guaranteed over full -40°C to +85°C industrial temperature range, including aging, voltage, and load variation. |
| Phase Jitter (12 kHz–20 MHz) | 300 fs typical - meets stringent jitter budgets for 10G/25G Ethernet and PCIe Gen3+ serial links. |
| Supply Voltage | 3.3 V ±5% - fixed single-rail operation; no internal LDO; requires clean, regulated input. |
| Start-up Time | ≤10 ms - time from VDD reaching minimum spec to valid LVDS output; critical for system boot sequencing. |
| Package | JS6 (5.0 × 3.2 × 1.2 mm) - surface-mount ceramic SMD package with 6-pin layout and standard reflow profile compliance. |
Pinout & Package
Package: JS6, 5.0 × 3.2 × 1.2 mm ceramic SMD oscillator module with 6-pad footprint and bottom-side ground paddle (non-electrical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E/D (Enable/Disable) | Active-low control: logic low disables LVDS output; internally pulled high - open or tied to VDD enables output. |
| 2 | NC | No connect - must remain unconnected per datasheet; not internally bonded. |
| 3 | GND | Power ground reference - connects directly to PCB ground plane; shared return for all internal circuitry. |
| 4 | OUT | LVDS positive output - delivers complementary waveform relative to OUT2; requires 100 Ω differential termination. |
| 5 | OUT2 | LVDS negative output - 180° out-of-phase with OUT; forms true differential pair for noise rejection. |
| 6 | VDD | 3.3 V power supply - requires local 0.01 μF ceramic bypass capacitor to GND (Pin 3) to suppress high-frequency supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| One-Time Programmable (OTP) Memory | Enables factory-trimmed 156.257 MHz output with infinite shelf life - eliminates post-silicon calibration or external programming hardware. |
| Low Phase Jitter Performance | 300 fs typical (12 kHz–20 MHz) - ensures <0.5 UI jitter margin for 10 Gbps serial data recovery in Ethernet and Fibre Channel systems. |
| Industrial Temperature Range | -40°C to +85°C operation with ±25 ppm stability - validated across thermal cycling and HTOL (2000 hrs @ 125°C junction). |
| LVDS Output Compliance | Meets ANSI TIA/EIA-644-A: 0.25–0.5 V differential swing, <380 ps rise/fall times, and 45–55% duty cycle - interoperable with standard SerDes receivers. |
| Fast Enable/Disable Response | 100 ns output enable/disable time - supports dynamic clock gating in power-managed subsystems without glitching. |
Applications
| 10GBASE-T Ethernet PHY Clocking | FPGA Transceiver Reference Clock |
|---|---|
Use Scenario: Provides primary reference clock to Marvell Alaska X or Broadcom BCM54616S 10GBASE-T PHY ICs in enterprise switches. IC Role / Device Role / Timing Role: LVDS oscillator supplying 156.257 MHz with sub-500 fs jitter to meet IEEE 802.3an spectral mask and BER requirements. Use Value: Eliminates need for external jitter cleaner; ±25 ppm stability ensures link training success across temperature and voltage corners. |
Use Scenario: Drives GTY/GTH transceivers in Xilinx Kintex/Virtex Ultrascale+ FPGAs for 25G KR/KP backplane interfaces. IC Role / Device Role / Timing Role: Low-jitter LVDS clock source meeting Xilinx AC timing specs for TX/RX PMA calibration and CDR lock. Use Value: 300 fs typical jitter enables >10-12 BER at 25.78125 Gbps; JS6 footprint simplifies board routing vs. larger 7 mm packages. |
| Optical Transport Network (OTN) Framers | PCIe Gen4 Switch Timing |
Use Scenario: Supplies 156.257 MHz clock to Microchip PM8592 or IDT 8T49N241 OTN framers in metro DWDM line cards. IC Role / Device Role / Timing Role: Precision oscillator meeting ITU-T G.8262 EEC-2 wander and jitter limits for synchronous optical layer timing. Use Value: ±25 ppm stability over -40°C to +85°C avoids frame slip events during thermal transients in outdoor cabinets. |
Use Scenario: Clocks Broadcom BCM57508 or Intel PCH CEM4-compliant PCIe Gen4 switches in server motherboards. IC Role / Device Role / Timing Role: LVDS reference for PCIe root complex and endpoint timing recovery circuits requiring <1.0 ps RMS jitter. Use Value: Meets PCIe Gen4 specification jitter budget (1.0 ps RMS, 12 kHz–20 MHz); 10 ms start-up aligns with platform power-on reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-PROG-156M257 | Programmable I2C-configurable silicon oscillator; 300 fs jitter; same 5.0 × 3.2 mm package but uses HCSL/LVCMOS outputs only - no native LVDS. | Requires level-shifting or buffer for LVDS-receiving devices; lacks OTP permanence - firmware dependency introduced. | Select when field programmability or multi-frequency flexibility outweighs need for guaranteed LVDS compliance and factory-set stability. |
| AK2-156.257MHZ-E | Fixed-frequency LVDS oscillator from Abracon; ±25 ppm, -40°C to +85°C; 300 fs jitter; identical JS6 package and pinout. | Drop-in replacement with same electrical and mechanical interface; however, uses fundamental-mode AT-cut crystal vs. Renesas' PLL architecture. | Choose for cost-sensitive volume production where long-term aging drift (<±3 ppm/10 yrs) is acceptable and PLL-based jitter optimization is not required. |
Compared with Si510-PROG-156M257 and AK2-156.257MHZ-E, the XUH536156.257000I offers factory-programmed LVDS output with guaranteed 300 fs jitter and OTP non-volatility - eliminating configuration overhead and ensuring consistent performance across manufacturing lots without firmware or external tuning.
Availability
XUH536156.257000I is available at Aetrix Electronics and suitable for 10GBASE-T Ethernet PHY clocking, FPGA transceiver reference timing, OTN framer synchronization, and PCIe Gen4 switch timing requiring stable component supply, industrial-temperature operation, and low-jitter LVDS output.
Supply support for XUH536156.257000I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and timing solutions, with global R&D and manufacturing infrastructure.
The XU family is designed specifically for high-performance, low-jitter clock generation in networking, datacenter, and telecom infrastructure - emphasizing programmability, industrial reliability, and multi-interface flexibility.
FAQ
What output interface does the XUH536156.257000I use, and is it configurable?
The XUH536156.257000I uses a fixed LVDS output interface, as indicated by the "H" in its part number (XUH536...). It is not user-configurable - the output type is factory-programmed and immutable. This ensures signal integrity consistency and eliminates configuration errors in high-speed designs where LVDS differential termination and common-mode voltage are critical.
What is the frequency stability specification for XUH536156.257000I over temperature?
The XUH536156.257000I guarantees ±25 ppm frequency stability over the full industrial temperature range of -40°C to +85°C. This includes contributions from initial calibration, temperature hysteresis, supply voltage variation, load change, aging, and mechanical stress - all verified per Renesas' AC Electrical Characteristics Table 12.
Does XUH536156.257000I support output enable/disable functionality, and how is it implemented?
Yes, the XUH536156.257000I supports hardware-controlled output enable/disable via Pin 1 (E/D). When left open or tied to VDD, the output is enabled; applying logic-low (≤30% VDD) disables the LVDS output within 100 ns. Internal pull-up ensures fail-safe operation - no external resistor needed unless driving from an open-drain controller.
What package type and dimensions does XUH536156.257000I use, and is it RoHS compliant?
The XUH536156.257000I uses the JS6 package: a 5.0 × 3.2 × 1.2 mm ceramic surface-mount oscillator module with 6 solder pads. It is RoHS compliant and qualified per JEDEC J-STD-020D reflow profile, including peak temperature ≤260°C for 10 seconds. Marking includes "XUH5…" on Line 1 and frequency-derived digits on Line 2.
How is phase jitter specified for XUH536156.257000I, and what measurement bandwidth applies?
XUH536156.257000I specifies phase jitter as 300 fs typical and 400 fs maximum over the 12 kHz to 20 MHz integration bandwidth - matching industry-standard PCIe and Ethernet jitter test conditions. This value is measured under 3.3 V supply, -40°C to +85°C, and applies specifically to its LVDS output mode per Table 12 in the official Renesas XU datasheet.
XUH536156.257000I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XU
- Package/Case:
- 6-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Base Resonator:
- Crystal
- Type:
- XO (Standard)
- Frequency:
- 156.257 MHz
- Function:
- Enable/Disable
- Output:
- LVCMOS
- Voltage - Supply:
- 3.3V
- Frequency Stability:
- ±25ppm
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 108mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Size / Dimension:
- 0.197" L x 0.126" W (5.00mm x 3.20mm)
- Height - Seated (Max):
- 0.047" (1.20mm)
XUH536156.257000I FAQ
1.How can I place an order for XUH536156.257000I through Aetrix?
Please submit a Request for Quotation (RFQ) for XUH536156.257000I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XUH536156.257000I reliable?
The price and inventory of XUH536156.257000I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XUH536156.257000I is usually 5 days.
3.What payment methods are accepted for XUH536156.257000I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XUH536156.257000I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XUH536156.257000I?
XUH536156.257000I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XUH536156.257000I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XUH536156.257000I?
For technical support, including XUH536156.257000I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XUH536156.257000I requirements.
6.How does Aetrix verify that XUH536156.257000I is sourced from the original manufacturer or authorized distributors?
All XUH536156.257000I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XUH536156.257000I meets industry standards.
7.What is the process for return or replacement of XUH536156.257000I?
All XUH536156.257000I units undergo pre-shipment inspection (PSI). If there is an issue with XUH536156.257000I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XUH536156.257000I part is unused and in its original packaging.
Return procedure for XUH536156.257000I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XUH536156.257000I Tags
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