Diodes Incorporated PI6C49S1510BZDIEX

Overview

PI6C49S1510BZDIEX from Diodes Incorporated is a high-performance 10-output differential fanout buffer with dual-bank (A/B) user-configurable signaling-LVDS, LVPECL, or HCSL per bank-supporting up to 1.5 GHz differential output frequency, <0.02 ps typ additive phase jitter (156.25 MHz, 12 kHz–20 MHz), and 2.5 V/3.3 V dual supply architecture. It serves as a low-skew clock distribution IC in high-speed networking switches and telecom backplanes.

For engineers reviewing the PI6C49S1510BZDIEX datasheet, PI6C49S1510BZDIEX pinout, PI6C49S1510BZDIEX application, or PI6C49S1510BZDIEX equivalent, key selection criteria include per-bank output standard configurability, sub-40 ps intra-bank skew, synchronous CMOS reference output enable, and support for crystal, single-ended, or differential reference inputs.

Technical Context

This device implements a dual-bank fanout architecture with independent OPMODEA[1:0] and OPMODEB[1:0] control for LVPECL/LVDS/HCSL selection per bank, and uses Diodes' proprietary input detection logic to flag illegal input states (e.g., both inputs high/low) by forcing outputs low. It supports three reference input modes-crystal (X1/X2), differential (IN0+/IN0− or IN1+/IN1−), or single-ended via internal biasing-and features separate VDD (core) and VDDO (I/O) supplies for level shifting.

AC performance is defined by ultra-low additive jitter (<0.01 ps typ, 10 kHz–1 MHz), propagation delay <570 ps (LVPECL/LVDS @ 100 MHz), and <900 ps (HCSL @ 100 MHz), with output duty cycle maintained at 40–60% up to 1.5 GHz for LVPECL/LVDS and 48–52% for HCSL below 250 MHz. The Ref_Out delivers up to 200 MHz LVCMOS with 2.2 ns typ propagation delay and programmable synchronous enable via Sync_OE.

Key Specifications

Pinout & Package

The PI6C49S1510BZDIEX is housed in a 48-pin, 7 mm × 7 mm, 0.75 mm height TQFN package (ZD code) with exposed thermal pad, lead-free and halogen-free per RoHS 3 and Diodes' "Green" definition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT8T49N242A and Si53302-A01AGM, the PI6C49S1510BZDIEX delivers superior jitter performance (<0.01 ps vs >0.1 ps), lower latency (<570 ps vs >1 ns), and unique per-bank signaling-making it optimal for pure, high-fidelity clock distribution without synthesis overhead.

Availability

PI6C49S1510BZDIEX is available at Aetrix Electronics and suitable for 10G/25G Ethernet switch fabric, PCIe Gen4/Gen5 clock distribution, and optical transport network (OTN) line cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for PI6C49S1510BZDIEX 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal ICs, with emphasis on power management, signal integrity, and timing solutions for industrial, computing, and communications markets.

The PI6C49S1510B belongs to Diodes' high-performance clock buffer product line, engineered specifically for low-jitter, multi-standard clock distribution in next-generation networking and data center infrastructure.

FAQ

What reference input configurations does the PI6C49S1510BZDIEX support?

The PI6C49S1510BZDIEX supports three reference input modes: differential (IN0± or IN1±), single-ended (via internal biasing of IN0+/IN0− or IN1+/IN1−), and fundamental-mode crystal (X1/X2, 10–50 MHz). IN_SEL[1:0] selects the active source, and the device auto-detects illegal input states to force outputs low-ensuring robust operation across diverse clock source topologies.

How is output signaling configured per bank, and what are the voltage requirements?

Each bank's output signaling (LVPECL, LVDS, HCSL, or Hi-Z) is set via two LVCMOS/LVTTL inputs: OPMODEA[1:0] for Bank A (Pins 14, 47) and OPMODEB[1:0] for Bank B (Pins 23, 39). VDDO must be 2.375–3.465 V and matches the selected standard's voltage compliance-e.g., 2.5 V or 3.3 V for LVPECL/LVDS, 3.3 V for HCSL-enabling level-shifted interoperability with mixed-voltage receivers.

What is the maximum frequency and jitter performance of the Ref_Out pin?

The Ref_Out (Pin 44) delivers an LVCMOS clock up to 200 MHz when driven by a reference input (not crystal), with typical additive jitter of 0.03 ps RMS (10 kHz–1 MHz). When driven by the internal crystal oscillator (X1/X2), max frequency drops to 50 MHz and jitter rises to 0.3 ps RMS-making it ideal for auxiliary control logic clocks but not high-speed SerDes reference paths.

Does the PI6C49S1510BZDIEX require external termination resistors for differential outputs?

Yes-external termination is required and topology depends on signaling standard: 100 Ω across differential pairs for LVDS; 50 Ω to VDDO − 2 V for LVPECL; and 33 Ω series + 49.9 Ω parallel (with 2 pF) for HCSL. The datasheet specifies exact load board configurations (e.g., Figure 16–17) to maintain signal integrity and meet jitter/skew specs-omitting these compromises timing accuracy.