Diodes Incorporated PI6C49X0201WIE

Overview

PI6C49X0201WIE from Pericom Semiconductor is a 1-to-1 differential-to-LVCMOS/LVTTL clock buffer translator with differential CLK/nCLK inputs supporting LVPECL, LVDS, LVHSTL, SSTL, and HCSL levels, 360MHz max output frequency, 500ps max part-to-part skew, and dual 3.3V/2.5V supply operation. It serves as a high-fidelity clock interface in FPGA clock distribution, telecom line card timing, and high-speed serial receiver clock recovery.

For engineers reviewing the PI6C49X0201WIE datasheet, PI6C49X0201WIE pinout, PI6C49X0201WIE application, or PI6C49X0201WIE equivalent, key selection criteria include additive phase jitter (0.09ps RMS at 156.25MHz), input voltage compatibility across five differential standards, and SOIC-8 footprint constraints in space-constrained PCB layouts.

Technical Context

This device implements a single-ended LVCMOS/LVTTL output stage driven by a fully differential input comparator with internal 51kΩ pullup/pulldown resistors. Its architecture enables direct interfacing to multiple differential signaling families without external biasing-except when adapting single-ended sources, where an external VDD/2 reference is required.

AC performance is specified across both 2.5V and 3.3V supplies, with propagation delay ranging from 1.6ns (3.3V) to 2.2ns (2.5V), and output duty cycle tightly controlled between 40–60% up to 350MHz. Additive phase jitter remains below 0.15ps RMS across 12kHz–20MHz integration bandwidth.

Key Specifications

Pinout & Package

PI6C49X0201WIE is housed in an 8-pin, 150-mil wide, Pb-free and RoHS-compliant SOIC package (Package Code: W), with 1.27mm pitch and JEDEC MS-012D/AA mechanical compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential-to-single-ended clock translation applications.

Compared with IDT 8T49N241 and ON Semi NB3N3020B, PI6C49X0201WIE uniquely balances wide differential input compatibility, 360MHz bandwidth, dual-supply flexibility, and SOIC-8 footprint-making it optimal for fixed-frequency, low-jitter clock fanout in space- and thermal-constrained systems.

Availability

PI6C49X0201WIE is available at Aetrix Electronics and suitable for FPGA clock distribution, telecom line card timing, and DDR2 memory controller interface applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for PI6C49X0201WIE 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

Pericom Semiconductor (now part of Diodes Incorporated) specialized in high-performance timing, interface, and signal integrity solutions for communications, computing, and industrial markets before its 2017 acquisition.

The PI6C49X0201 belongs to Pericom's clock buffer and translator product line, engineered specifically for low-skew, low-jitter clock distribution in multi-standard, mixed-voltage systems with strict PCB area constraints.

FAQ

Can PI6C49X0201WIE accept single-ended input signals?

Yes, but requires external biasing: a VDD/2 reference must be applied to the nCLK pin using a resistor divider (e.g., R1=R2=1kΩ) and bypass capacitor, as shown in Figure 1 of the datasheet. The internal 51kΩ pullup/pulldown resistors alone are insufficient for reliable single-ended operation without this network.

What is the recommended power supply decoupling for PI6C49X0201WIE?

A minimum of one 100nF X7R ceramic capacitor placed within 2mm of the VDD pin (Pin 8) and GND (Pin 5) is required. For systems operating above 200MHz, add a 10nF capacitor in parallel. Ground plane integrity beneath the SOIC-8 footprint is critical to maintain specified 0.09ps RMS jitter performance.

Does PI6C49X0201WIE support hot-swap or power sequencing?

No explicit hot-swap or power sequencing support is documented. The device lacks internal power-on reset or supply-rail tracking circuitry. Per Absolute Maximum Ratings, VDD must be established before applying input signals; violating this risks latch-up due to input overvoltage conditions exceeding VDD +0.5V.

How does output termination affect PI6C49X0201WIE's DC specifications?

VOH and VOL values are specified with 50Ω loads terminated to VDD/2. Using alternative terminations (e.g., 50Ω to GND or open-drain) invalidates guaranteed DC levels and may degrade duty cycle or increase jitter. For LVTTL interfaces, ensure receiving device input thresholds align with measured VOH/VOL under actual 50Ω-VDD/2 loading.