Diodes Incorporated PI6C49X0204AWIE

Overview

PI6C49X0204AWIE from Diodes Incorporated is a low-skew, single-input-to-four-output LVCMOS clock buffer operating from 1.5 V to 3.3 V supply, delivering ±250 ps output-to-output skew, 200 MHz max output frequency, and 3.6 V-tolerant CLK input. It serves as a fanout buffer in timing-critical digital systems such as FPGA clock distribution, industrial PLCs, and embedded controllers.

For engineers reviewing the PI6C49X0204AWIE datasheet, PI6C49X0204AWIE pinout, PI6C49X0204AWIE application, or PI6C49X0204AWIE equivalent, key selection criteria include supply voltage flexibility (1.5–3.3 V), industrial temperature range (−40°C to +85°C), OE-controlled tri-state outputs, and additive jitter as low as 0.05 ps (156.25 MHz, 12 kHz–20 MHz).

Technical Context

This clock buffer implements a fully static CMOS design with internal 51 kΩ pull-down on CLK and OE inputs, enabling robust noise immunity without external biasing. Its propagation delay ranges from 0.8 ns (VDD = 3.3 V) to 5 ns (VDD = 1.5 V), and output rise/fall times are tightly controlled at 1.0–1.5 ns across all supply voltages.

The device supports rail-to-rail input clock signals and delivers matched 20 Ω nominal output impedance per channel. Additive jitter performance improves with higher VDD: 0.05 ps at 3.3 V versus 0.1 ps at 1.5 V, making it suitable for high-fidelity clock replication in multi-synchronous domain systems.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (150 mil wide), RoHS-compliant, lead-free, green (halogen/antimony-free).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT 5PB1102PGI and ON Semi NB3N3020BDR2G, PI6C49X0204AWIE uniquely balances voltage flexibility (1.5–3.3 V), OE control, and sub-300 ps skew - making it optimal for mixed-voltage, power-managed clock trees where design reuse across platforms is critical.

Availability

PI6C49X0204AWIE is available at Aetrix Electronics and suitable for FPGA clock distribution, industrial PLC timing, and DDR memory interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for PI6C49X0204AWIE 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 PI6C49X0204AWIE belongs to Diodes' Pericom® clock buffer product line, engineered specifically for low-jitter, multi-output clock distribution in space-constrained, mixed-voltage embedded systems.

FAQ

What is the maximum recommended clock frequency for PI6C49X0204AWIE?

The device supports up to 200 MHz output frequency when powered at 2.5 V or 3.3 V, verified across industrial temperature range (−40°C to +85°C). At 1.5 V, maximum rated frequency is 166 MHz. Performance is guaranteed only with proper 0.1 µF VDD–GND decoupling and controlled-impedance PCB routing.

Can PI6C49X0204AWIE accept a 3.3 V clock input when VDD = 1.8 V?

Yes - the CLK input is explicitly rated for 3.6 V tolerance regardless of VDD level, allowing direct connection to 3.3 V crystal oscillators or clock generators even when the buffer operates at 1.5 V or 1.8 V. No external level-shifting circuitry is required.

How does the OE pin function, and what is its default state?

The OE pin is active-low and internally pulled down via a 51 kΩ resistor. When left unconnected or held low, all four outputs are tri-stated. For normal operation, OE must be tied to VDD. This enables hardware-based clock gating without requiring processor intervention.

Is external termination required on the Q1–Q4 outputs?

A 33 Ω series resistor is recommended on each output if the trace length exceeds 1 inch, per Diodes' application guidance. This minimizes reflections and maintains signal integrity in high-speed LVCMOS environments - especially critical for 133–200 MHz operation on FR-4 PCBs.