My Inquiry
My Account
Diodes Incorporated PI6C48535-01BLIEX
- Part No.:
- PI6C48535-01BLIEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Clock Buffers, Drivers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PI6C48535-01BLIEX.pdf
- Description:
- IC CLK BUFFER 2:4 500MHZ 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI6C48535-01BLIEX from Diodes Incorporated (acquired Pericom Semiconductor) is a 3.3V low-skew 1-to-4 fanout buffer that translates single-ended LVCMOS/LVTTL clock inputs to four differential LVPECL output pairs. It supports up to 500 MHz operation, features 40 ps typical output skew and 1.5 ns propagation delay, and operates across –40°C to +85°C for telecom clock distribution.
For engineers reviewing the PI6C48535-01BLIEX datasheet, PI6C48535-01BLIEX pinout, PI6C48535-01BLIEX application, or PI6C48535-01BLIEX equivalent, key selection criteria include LVCMOS/LVTTL-to-LVPECL translation capability, dual selectable clock inputs (CLK0/CLK1), CLK_EN synchronous enable control, and TSSOP-20 packaging with verified 3.3V supply compatibility.
Technical Context
The device implements asynchronous clock selection via CLK_SEL and synchronous output gating via CLK_EN, enabling glitch-free output enable/disable aligned to input clock edges. Its LVPECL outputs meet standard 50 Ω termination requirements with VOH = 2.1–2.6 V and VOL = 1.3–1.8 V at VCC = 3.3 V.
Input pins CLK0, CLK1, CLK_EN, and CLK_SEL are compatible with LVCMOS/LVTTL logic levels and include internal 50 kΩ pull-up (CLK_EN) or pull-down (CLK_SEL, CLK0, CLK1) resistors. Additive jitter is specified at 30 fs (typical), supporting high-integrity timing in serial data links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Frequency | 500 MHz - supports OC-48, SONET, and 3.125 Gbps SerDes reference clocks |
| Output Skew | 40 ps (typ) - ensures tight phase alignment across four LVPECL output pairs for multi-lane synchronization |
| Propagation Delay | 1.5 ns (typ) - enables predictable timing budgeting in high-speed clock trees |
| Additive Jitter | 30 fs (typ) - minimizes timing uncertainty in jitter-sensitive applications like PCIe Gen3+ and Ethernet PHYs |
| Supply Voltage | 3.0–3.6 V - compatible with standard 3.3 V rail with ±10% tolerance |
| Operating Temp | –40°C to +85°C - qualified for industrial and telecom infrastructure environments |
| Input Logic Levels | LVCMOS/LVTTL - accepts 0/3.3 V signaling without level shifters |
Pinout & Package
Package: 20-pin TSSOP (L), 173-mil width, Pb-free & Green compliant (JEDEC MO-153).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VEE (Pin 1) | Negative power supply | Required connection to ground (0 V) for LVPECL output biasing |
| CLK_EN (Pin 2) | Synchronous enable input | LVCMOS/LVTTL input with 50 kΩ pull-up; forces Qx low / nQx high when low |
| CLK_SEL (Pin 3) | Clock source select | LVCMOS/LVTTL input with 50 kΩ pull-down; selects CLK0 (low) or CLK1 (high) |
| CLK0 (Pin 4) | Primary clock input | LVCMOS/LVTTL-compatible single-ended input, internally terminated |
| CLK1 (Pin 6) | Secondary clock input | LVCMOS/LVTTL-compatible single-ended input, internally terminated |
| VCC (Pins 10, 13, 18) | Positive power supply | Three dedicated 3.3 V supply pins reduce IR drop and improve noise immunity |
| Q0/nQ0 (Pins 19/20) | Differential LVPECL output pair | Matched pair for one clock domain; requires 50 Ω termination to VCC–2 V |
| Q1/nQ1 (Pins 16/17) | Differential LVPECL output pair | Second matched pair; independent of Q0/nQ0 but shares same skew budget |
| Q2/nQ2 (Pins 14/15) | Differential LVPECL output pair | Third matched pair; supports parallel clock distribution to multiple ICs |
| Q3/nQ3 (Pins 11/12) | Differential LVPECL output pair | Fourth matched pair; enables full 1-to-4 fanout with sub-50 ps inter-pair skew |
Key Features
| Feature | Design Value |
|---|---|
| Dual selectable clock inputs | CLK0 and CLK1 allow dynamic source switching without external multiplexers |
| Synchronous CLK_EN control | Enables/disables all outputs on clock edge-eliminates runt pulses during enable transitions |
| Integrated input termination | 50 kΩ internal pull-up (CLK_EN) and pull-down (CLK_SEL, CLK0, CLK1) reduce BOM count and layout area |
| Low additive jitter | 30 fs (typ) preserves signal integrity in high-speed serial interfaces requiring <100 fs total jitter budgets |
| LVPECL output compliance | Meets JEDEC JESD8-12 standards with VOH/VOL specs validated at 3.3 V supply |
Applications
| SONET/SDH Line Cards | PCIe Gen3 Reference Clock Distribution |
|---|---|
Use Scenario: Distributing a single 155.52 MHz or 622.08 MHz reference clock to multiple framer, mapper, and PHY ICs on a line card. IC Role / Device Role / Timing Role: Fanout buffer translating LVTTL system clock to LVPECL for backplane and ASIC interface timing. Use Value: 40 ps output skew ensures deterministic setup/hold margins across four downstream devices operating at OC-12/OC-48 rates. | Use Scenario: Providing synchronized 100 MHz differential reference clocks to four PCIe Gen3 endpoints on a server motherboard. IC Role / Device Role / Timing Role: Low-jitter clock repeater enabling compliance with PCIe Gen3 clock jitter spec (<1.0 ps RMS). Use Value: 30 fs additive jitter contributes minimally to total jitter budget, preserving link training reliability. |
| 10G Ethernet MAC/PHY Interfaces | Multi-Core Processor Clock Tree |
Use Scenario: Driving LVPECL inputs of dual 10GBASE-R PHYs and a network processor from a common 156.25 MHz oscillator. IC Role / Device Role / Timing Role: Single-ended to differential clock translator with synchronous enable for PHY power sequencing. Use Value: CLK_EN allows coordinated PHY reset and clock enable, preventing metastability during hot-plug events. | Use Scenario: Distributing a 200 MHz system clock to four CPU cores and associated cache controllers in an embedded SoC carrier board. IC Role / Device Role / Timing Role: Low-skew fanout buffer ensuring simultaneous clock arrival across core domains. Use Value: 1.5 ns propagation delay enables precise clock tree modeling and static timing analysis convergence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVCMOS/LVTTL-to-LVPECL fanout buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT8T49N242B | Integrated PLL with programmable output dividers; higher power (180 mA); 32-pin QFN | Supports frequency synthesis and jitter cleaning; not a pure fanout buffer | Select when clock multiplication or jitter attenuation is required beyond simple distribution |
| ON Semiconductor NB3N551 | 3.3 V LVPECL fanout only; no clock select or CLK_EN; 16-pin SOIC | Limited to single input; lacks enable/synchronization logic | Select for cost-sensitive, fixed-input designs where input flexibility is unnecessary |
Compared with IDT8T49N242B and NB3N551, the PI6C48535-01BLIEX uniquely balances input flexibility (dual selectable clocks + synchronous enable), low skew (40 ps), and compact TSSOP-20 packaging-making it optimal for space-constrained telecom and networking boards requiring deterministic clock gating.
Availability
PI6C48535-01BLIEX is available at Aetrix Electronics and suitable for SONET/SDH line cards, PCIe Gen3 reference clock distribution, and 10G Ethernet MAC/PHY interfaces requiring stable component supply, long-term lifecycle support, and traceable green packaging.
Supply support for PI6C48535-01BLIEX 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
Diodes Incorporated acquired Pericom Semiconductor in 2017 and maintains its high-performance clock and timing portfolio for communications and computing markets.
The PI6C48535-01BLIEX belongs to Pericom's legacy low-skew clock buffer product line, designed specifically for high-frequency, low-jitter clock translation and distribution in telecom infrastructure and high-speed serial interfaces.
FAQ
What is the recommended termination for LVPECL outputs?
Each LVPECL output pair (e.g., Q0/nQ0) must be terminated to VCC–2 V using two 50 Ω resistors-one from Q0 to VCC–2 V and one from nQ0 to VCC–2 V. This matches the 100 Ω differential impedance and ensures proper common-mode voltage (1.3 V) and output swing (800 mV). The datasheet specifies 150 Ω pull-downs on evaluation boards for specific test load configurations.
Can CLK_EN be toggled asynchronously without causing output glitches?
Yes. CLK_EN operates synchronously with the selected clock input: outputs disable or enable only on the next rising or falling edge of CLK0 or CLK1 after CLK_EN changes state. This eliminates runt pulses and ensures deterministic timing behavior, as confirmed by the CLK_EN timing diagram and control function table in the datasheet.
Is PI6C48535-01BLIEX pin-compatible with earlier Pericom variants?
Yes. PI6C48535-01BLIEX is a Pb-free and green-compliant version of the original PI6C48535-01B, sharing identical pinout, electrical characteristics, and thermal profile. The "X" suffix denotes tape-and-reel packaging, and the "E" indicates RoHS compliance-no functional or mechanical changes affect compatibility.
Does the device require external decoupling capacitors?
Yes. Three VCC pins (10, 13, 18) each require a local 0.1 µF ceramic decoupling capacitor placed within 3 mm of the pin and connected to a solid ground plane. Additional bulk capacitance (e.g., 4.7 µF tantalum) near the power entry point is recommended to suppress low-frequency ripple and ensure stable 3.3 V operation under dynamic load.
PI6C48535-01BLIEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Fanout Buffer (Distribution), Multiplexer
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 2:4
- Differential - Input:Output:
- No/Yes
- Input:
- LVCMOS, LVPECL, LVTTL
- Output:
- LVPECL
- Frequency - Max:
- 500 MHz
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TSSOP
PI6C48535-01BLIEX FAQ
1.How can I place an order for PI6C48535-01BLIEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI6C48535-01BLIEX 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 PI6C48535-01BLIEX reliable?
The price and inventory of PI6C48535-01BLIEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI6C48535-01BLIEX is usually 5 days.
3.What payment methods are accepted for PI6C48535-01BLIEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI6C48535-01BLIEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI6C48535-01BLIEX?
PI6C48535-01BLIEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI6C48535-01BLIEX 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 PI6C48535-01BLIEX?
For technical support, including PI6C48535-01BLIEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI6C48535-01BLIEX requirements.
6.How does Aetrix verify that PI6C48535-01BLIEX is sourced from the original manufacturer or authorized distributors?
All PI6C48535-01BLIEX 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 PI6C48535-01BLIEX meets industry standards.
7.What is the process for return or replacement of PI6C48535-01BLIEX?
All PI6C48535-01BLIEX units undergo pre-shipment inspection (PSI). If there is an issue with PI6C48535-01BLIEX, 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 PI6C48535-01BLIEX part is unused and in its original packaging.
Return procedure for PI6C48535-01BLIEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI6C48535-01BLIEX Tags
-
PL133-37TC-R
Microchip Technology
-
PL133-27GC-R
Microchip Technology
-
LMK1C1102DQFR
Texas Instruments
-
LMK1C1102PWR
Texas Instruments
-
LMK1C1104DQFR
Texas Instruments
-
LMK1C1104PWR
Texas Instruments
-
CDC3RL02YFPR
Texas Instruments
-
SY75602ATWL-TR
Microchip Technology
-
SY75603ATWL-TR
Microchip Technology
-
5PB1102CMGI8
Renesas Electronics Corporation
-
PL133-27GI-R
Microchip Technology
-
551MLFT
Renesas Electronics Corporation
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
