Diodes Incorporated PI6C49X0202WIEX

Overview

PI6C49X0202WIEX from Diodes Incorporated is a low-skew, 1-to-2 LVCMOS/LVTTL fanout buffer used for high-fidelity clock distribution in timing-critical digital systems. It features two matched LVCMOS/LVTTL outputs, 250MHz maximum output frequency, 25ps typical output skew, and dual-voltage operation at 3.3V or 2.5V core/output supplies - deployed in FPGA clock trees and microcontroller peripheral synchronization.

For engineers reviewing the PI6C49X0202WIEX datasheet, PI6C49X0202WIEX pinout, PI6C49X0202WIEX application, or PI6C49X0202WIEX equivalent, key selection criteria include guaranteed part-to-part skew (250ps typ), additive RMS jitter (0.07ps at 125MHz), and SOIC-W package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The PI6C49X0202WIEX implements a single-ended clock input with internal 51kΩ pulldown resistors, accepting both LVCMOS and LVTTL logic levels. Its dual-output architecture maintains tight timing alignment across Q0 and Q1 under matched load and supply conditions.

It supports independent VDD (core) and VDDO (output) rails, enabling mixed-voltage system interfacing. AC performance is characterized up to 250MHz with rise/fall times of 100–500ps and output duty cycle stability within ±3% across full frequency range.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (W), 150-mil width, RoHS-compliant, green, tape-and-reel (X suffix).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock fanout buffer applications.

Compared with ICS85301AMLF and PI6C20400LEX, the PI6C49X0202WIEX uniquely balances dual-supply flexibility, ultra-low skew, and minimal power (5mA IDD) in an industry-standard SOIC-W package - making it optimal for cost- and space-constrained industrial clock distribution.

Availability

PI6C49X0202WIEX is available at Aetrix Electronics and suitable for FPGA clock trees, industrial PLC backplanes, and optical transceiver reference clocking requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for PI6C49X0202WIEX 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 is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance analog, logic, and timing solutions for industrial, computing, and communications markets.

The PI6C49X0202WIEX belongs to Diodes' Pericom® clock buffer product line, engineered specifically for low-skew, low-jitter clock distribution in timing-sensitive digital systems where signal integrity and thermal reliability are critical.

FAQ

Can PI6C49X0202WIEX operate with different voltages on VDD and VDDO?

Yes. VDD (core) and VDDO (output) can be independently set to either 2.5V or 3.3V within their specified ranges (2.375–2.625V or 3.135–3.465V). This allows interfacing with mixed-voltage systems - for example, a 3.3V core driving 2.5V FPGA I/O banks - without external level shifters or voltage translators.

What is the purpose of the internal 51kΩ pulldown resistor on the CLK pin?

The internal 51kΩ pulldown resistor ensures a defined logic-low state when the CLK input is unconnected or floating, preventing metastability or unintended oscillation. It eliminates the need for external pull-down components in most applications, reducing BOM count and PCB area while maintaining compatibility with both LVCMOS and LVTTL input thresholds.

Does PI6C49X0202WIEX require external decoupling capacitors?

Yes. Diodes recommends 0.1μF ceramic capacitors placed as close as possible to each VDD and VDDO pin, with bulk capacitance (e.g., 4.7μF) shared across the device. This stabilizes supply rails during fast output transitions and suppresses high-frequency noise that could degrade skew and jitter performance in high-speed clock distribution.

Is PI6C49X0202WIEX qualified for automotive applications?

No. The PI6C49X0202WIEX is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Diodes offers the pin-compatible PI6C49X0202QIEX variant, which undergoes extended stress testing, PPAP documentation, and manufacturing in IATF 16949-certified facilities - contact Diodes or Aetrix for qualification status and sample availability.