Diodes Incorporated PI6C49X0201WIEX

Overview

PI6C49X0201WIEX from Pericom Semiconductor is a 1-to-1 differential-to-LVCMOS/LVTTL clock buffer translator with differential input supporting LVPECL, LVDS, LVHSTL, SSTL, and HCSL levels, single 3.3V/2.5V supply operation, 360MHz max output frequency, 500ps max part-to-part skew, and 0.09ps typical additive phase jitter (RMS) at 3.3V - deployed in high-speed timing interfaces for FPGA clock distribution and telecom line-card synchronization.

For engineers reviewing the PI6C49X0201WIEX datasheet, PI6C49X0201WIEX pinout, PI6C49X0201WIEX application, or PI6C49X0201WIEX equivalent, key selection criteria include differential input compatibility across five logic families, sub-2ns propagation delay at 3.3V, internal 51kΩ pullup/pulldown resistors on CLK/nCLK, SOIC-8 footprint constraints, and additive jitter performance under 0.15ps RMS across 12kHz–20MHz integration bandwidth.

Technical Context

This device implements a single-ended LVCMOS/LVTTL output stage driven by a fully differential input pair with internally biased termination - enabling direct interface to multiple high-speed signaling standards without external resistors. Its architecture supports both true differential and single-ended clock inputs via external V_REF biasing, with guaranteed timing performance across –40°C to +85°C ambient.

The buffer operates from either 2.5V ±5% or 3.3V ±0.3V supplies, delivering 45–60% output duty cycle over 350MHz, 80–350ps rise/fall times (0.8V–2V), and 1.6–2.5ns propagation delay depending on supply and frequency - all while maintaining <500ps inter-device skew under matched load conditions.

Key Specifications

Pinout & Package

PI6C49X0201WIEX 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 buffer applications.

Compared with IDT 8T49N241 and TI LMK00301, PI6C49X0201WIEX provides broader differential input standard coverage (including SSTL/HCSL), smaller SOIC-8 footprint, and lower power consumption - making it optimal for space-constrained, multi-standard clock fanout where programmability is unnecessary.

Availability

PI6C49X0201WIEX is available at Aetrix Electronics and suitable for FPGA clock distribution, telecom line card timing, and industrial PLC real-time control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for PI6C49X0201WIEX 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 (acquired by Diodes Incorporated in 2017) specialized in high-performance timing, interface, and signal-integrity solutions for communications, computing, and industrial markets.

The PI6C49X0201 belongs to Pericom's low-skew, low-jitter clock buffer product line - engineered specifically for high-fidelity clock translation in multi-standard, high-density PCB environments.

FAQ

Can PI6C49X0201WIEX accept single-ended inputs?

Yes - the differential CLK/nCLK inputs can be configured for single-ended operation using an external V_REF bias network (e.g., R1/R2 divider to VDD/2). The datasheet provides design guidance and example resistor ratios for 2.5V and 3.3V swing cases, ensuring proper common-mode voltage alignment per input standard.

What is the maximum load capacitance supported on Q0 output?

The Q0 output is characterized driving a 50Ω load to VDD/2, implying ~10pF total capacitive load including trace and receiver input. For heavier loads, rise/fall times degrade beyond 350ps and duty cycle shifts outside 45–60% - verify timing margins with IBIS simulation or bench measurement when exceeding 10pF.

Does PI6C49X0201WIEX require external bypass capacitors?

Yes - a 0.1µF ceramic capacitor must be placed within 5mm of the VDD pin (Pin 8) and connected to GND (Pin 5) to suppress high-frequency supply noise. Additional bulk capacitance (e.g., 4.7µF) is recommended near the SOIC footprint for stable operation above 200MHz.

How does additive phase jitter vary between 2.5V and 3.3V supply operation?

At 3.3V, typical additive phase jitter is 0.09ps RMS (156.25MHz); at 2.5V, it increases to 0.14ps RMS under identical test conditions. This 55% increase reflects higher thermal noise contribution at lower supply - confirm jitter budget compliance for your target application frequency and integration band.