Diodes Incorporated PI6C49CB02Q2WEX

Overview

PI6C49CB02Q2WEX from Diodes Incorporated is an automotive AEC-Q100 Grade 2 qualified 1-to-2 LVCMOS/LVTTL fanout buffer with single-ended clock input, dual low-skew outputs (Q0, Q1), 250 MHz maximum output frequency, 25 ps typical output skew, and operation over –40°C to +105°C for engine control unit timing distribution.

For engineers reviewing the PI6C49CB02Q2WEX datasheet, PI6C49CB02Q2WEX pinout, PI6C49CB02Q2WEX application, or PI6C49CB02Q2WEX equivalent, this device supports high-reliability clock fanout in automotive ADAS domain controllers, infotainment SoC synchronization, and gateway MCU clock tree expansion where deterministic skew and temperature-stable LVCMOS/LVTTL drive are required.

Technical Context

The PI6C49CB02Q2WEX implements a single-input, dual-output fanout architecture with internal pull-down on CLK and independent VDD (core) and VDDO (output) supply rails. It supports dual-voltage operation at 3.3 V or 2.5 V for both supply domains, enabling interface bridging between mixed-voltage clock domains.

Its AC performance is characterized across automotive temperature grades: output skew remains ≤80 ps (typical 25 ps) and part-to-part skew ≤800 ps (typical 250 ps) at 250 MHz, with additive RMS jitter as low as 0.07 ps at 125 MHz (12 kHz–20 MHz integration band).

Key Specifications

Pinout & Package

Package: 8-pin SOIC (W), 150 mil width, RoHS-compliant, halogen- and antimony-free "Green" construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NB3N502MNG and CDCV304PW, the PI6C49CB02Q2WEX uniquely delivers AEC-Q100 Grade 2 compliance, dual-voltage operation, and 25 ps output skew in an automotive-qualified SOIC package-making it the only option for timing-critical under-hood ECU clock distribution.

Availability

PI6C49CB02Q2WEX is available at Aetrix Electronics and suitable for engine control units, ADAS radar modules, automotive camera systems, and infotainment domain controllers requiring stable component supply across extended temperature ranges and automotive change-control processes.

Supply support for PI6C49CB02Q2WEX 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-reliability power management, signal integrity, and timing solutions for automotive, industrial, and computing markets.

The PI6C49CB02Q belongs to Diodes' Pericom® timing portfolio, designed specifically for automotive clock distribution with emphasis on low skew, jitter performance, and AEC-Q100 compliance across harsh thermal environments.

FAQ

Is PI6C49CB02Q2WEX pin-compatible with PI6C49CB02Q3WEX?

Yes, both share identical 8-pin SOIC (W) packaging and pinout. The only difference is operating temperature grade: Q2WEX is rated –40°C to +105°C (AEC-Q100 Grade 2), while Q3WEX is –40°C to +85°C (Grade 3). Electrical specifications are identical across both grades.

Can PI6C49CB02Q2WEX operate with VDD = 3.3 V and VDDO = 2.5 V simultaneously?

Yes. The device supports independent supply rails: VDD powers the input receiver and logic core, while VDDO powers the output drivers. This allows interfacing a 3.3 V MCU clock source to 2.5 V downstream peripherals without external level translation.

What is the purpose of the internal CLK pull-down resistor?

The internal 51 kΩ pull-down resistor on the CLK pin ensures a defined logic-low state during power-up, reset, or when the driving source is high-impedance. This prevents metastability or unintended clocking during system initialization in automotive ECU applications.

Does PI6C49CB02Q2WEX require external termination resistors on Q0/Q1 outputs?

No. The outputs have 5–12 Ω typical output impedance and are designed to drive standard 50 Ω transmission lines directly. External series termination is unnecessary unless trace impedance deviates significantly from 50 Ω or stub lengths exceed 1/10 wavelength at 250 MHz.