Diodes Incorporated PI6C49S1506FAIE

Overview

PI6C49S1506FAIE from Pericom Semiconductor is a high-performance differential fanout buffer IC with 6 differential outputs split across two configurable banks (A and B), supporting LVDS/LVPECL/HCSL signaling per bank, 1.5 GHz max output frequency, <0.03 ps typ additive phase jitter (12 kHz–20 MHz), and 1.5 ns typical propagation delay. It serves as a low-skew clock distribution device in high-speed networking and telecom backplanes.

For engineers reviewing the PI6C49S1506FAIE datasheet, PI6C49S1506FAIE pinout, PI6C49S1506FAIE application, or PI6C49S1506FAIE equivalent, key selection criteria include per-bank output standard configurability, ultra-low jitter performance at 156.25 MHz, dual reference input support (XTAL/differential), and industrial-grade TQFP-32 packaging with separate VDD/VDDO supplies.

Technical Context

The PI6C49S1506FAIE implements a dual-bank architecture with independent OPMODEA[1:0] and OPMODEB[1:0] control pins enabling LVPECL, LVDS, HCSL, or Hi-Z per bank. Input selection is managed via CLK_SEL[1:0], supporting XTAL, CLK0, or CLK1 as reference sources.

It features proprietary input detection logic to flag illegal input conditions, separate core (VDD) and output (VDDO) supply rails for level shifting, and ultra-low inter-output skew (<40 ps within bank) with 1.5 ns typical TPD - critical for synchronous high-frequency system timing integrity.

Key Specifications

Pinout & Package

TQFP-32 package (Package Code FA), Pb-free & Green compliant, 7 mm × 7 mm body, 0.8 mm pitch, exposed thermal pad not present. Pin 1 marked by dot; seating plane height 0.95–1.05 mm.

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 PI6C49S1506FAIE uniquely delivers per-bank signaling control and crystal input support in a compact TQFP-32, making it optimal for cost-sensitive, jitter-critical fanout-only roles without synthesis overhead.

Availability

PI6C49S1506FAIE is available at Aetrix Electronics and suitable for high-speed networking switches, telecom backplanes, and optical transport systems requiring stable component supply, long-term lifecycle assurance, and industrial temperature operation.

Supply support for PI6C49S1506FAIE 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 2016) specialized in high-speed timing, signal integrity, and interface solutions for datacom and telecom markets before integration.

The PI6C49S1506FAIE belongs to Pericom's PI6Cxxx fanout buffer product line, designed specifically for low-jitter, multi-standard clock distribution in 10G–100G infrastructure equipment.

FAQ

What reference clock inputs does the PI6C49S1506FAIE support?

The PI6C49S1506FAIE supports three reference input modes selected via CLK_SEL[1:0]: single-ended or differential crystal (XT/XTN), differential CLK0 (nCLK0/CLK0), or differential CLK1 (nCLK1/CLK1). Crystal mode requires external 18 pF load capacitors and biasing per datasheet Figure 1.

How is output signaling standard configured per bank?

Bank A signaling is set by OPMODEA[1:0] (pins 31–32); Bank B by OPMODEB[1:0] (pins 25–26). Encoding is: 00 = LVPECL, 01 = LVDS, 10 = HCSL, 11 = Hi-Z. Each bank's VDDO and VEE must be configured accordingly - e.g., VEE = GND for LVDS, VEE = −2 V for LVPECL.

What is the purpose of the IREF pin (Pin 7)?

Pin 7 (IREF) outputs a 100 µA reference current used internally for biasing analog circuitry. It must be terminated to GND via a 10 kΩ resistor to establish correct internal operating points; leaving it floating or shorted causes undefined behavior and increased jitter.

Can the PI6C49S1506FAIE drive both LVDS and LVPECL loads simultaneously?

Yes - Bank A can be configured for LVDS (OPMODEA = 01) while Bank B uses LVPECL (OPMODEB = 00), provided VDDO for each bank is set to its respective required voltage (2.5 V for LVDS, 3.3 V for LVPECL) and VEE is grounded for LVDS or −2 V for LVPECL per datasheet DC specs.