Diodes Incorporated PI6C4911502DZHIEX

Overview

PI6C4911502DZHIEX from Diodes Incorporated is a high-performance differential fanout buffer IC with two independently configurable LVPECL outputs, supporting up to 1.5 GHz output frequency, <27 fs RMS additive jitter (12 kHz–20 MHz), and per-output programmable dividers (÷1/2/4/8 for Bank A; ÷2/4/8/16 for Bank B). It operates from 2.5 V or 3.3 V supplies and targets clock distribution in high-speed networking switches and telecom backplanes.

For engineers reviewing the PI6C4911502DZHIEX datasheet, PI6C4911502DZHIEX pinout, PI6C4911502DZHIEX application, or PI6C4911502DZHIEX equivalent, key selection criteria include differential input compatibility (LVPECL/LVDS/CML/HCSL), independent bank-level divider control, low-skew (<30 ps) dual-output timing, and industrial-temperature operation (–40°C to +85°C) in a 3 mm × 3 mm TQFN package.

Technical Context

The PI6C4911502DZHIEX implements a dual-bank architecture with fully asynchronous divider control: Bank A uses SELA0/SELA1 pins for ÷1/2/4/8 division, while Bank B uses SELB0/SELB1 for ÷2/4/8/16. Input termination is handled via internal 100 Ω center-tapped VT pin, enabling direct connection to AC-coupled differential clocks without external resistors.

It supports level-shifting via separate VDD and VBBAC pins, allowing flexible interfacing with 2.5 V or 3.3 V logic domains. Output enable (OE#) and master reset (MR#) are synchronous, with defined timing relationships to input clock edges-ensuring glitch-free state transitions during dynamic reconfiguration.

Key Specifications

Pinout & Package

PI6C4911502DZHIEX is housed in a 16-pin, 3 mm × 3 mm, 0.5 mm pitch TQFN package (package code ZH), with exposed thermal pad (EPAD) requiring ≥4 thermal vias to GND plane for reliable power dissipation at full speed.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT8T49N242A and Si53302-A01AM, the PI6C4911502DZHIEX offers superior configurability (independent ÷1–÷16 division), lower jitter (27 fs vs >50 fs), and smaller footprint (16-TQFN vs 24-QFN), making it optimal for space-constrained, high-flexibility clock distribution in telecom and networking hardware.

Availability

PI6C4911502DZHIEX is available at Aetrix Electronics and suitable for high-speed networking switches, telecom backplane timing systems, and multi-core processor clock trees requiring stable component supply, guaranteed long-term availability, and RoHS 3-compliant sourcing.

Supply support for PI6C4911502DZHIEX 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 company specializing in discrete, analog, and mixed-signal ICs, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.

The PI6C4911502DZHIEX belongs to Diodes' high-speed clock buffer product line, engineered specifically for low-jitter, multi-destination clock distribution in 10G–100G networking, telecom infrastructure, and test equipment.

FAQ

What input signal types does the PI6C4911502DZHIEX support?

The PI6C4911502DZHIEX accepts LVPECL, LVDS, CML, and HCSL differential inputs. Its input common-mode range spans 0.25 V to VDD–1.2 V, and it features an internal 100 Ω center-tapped VT pin for direct AC-coupled termination - eliminating external resistors for most standard interface standards.

How is output divider configuration implemented on each bank?

Bank A divider is set by SELA0/SELA1 (÷1, ÷2, ÷4, ÷8); Bank B by SELB0/SELB1 (÷2, ÷4, ÷8, ÷16). These are static control pins sampled on power-up or after MR# assertion - no serial interface or register programming is required, enabling simple, robust hardware-based configuration.

Can the PI6C4911502DZHIEX operate with mixed supply voltages?

Yes - VDD powers core logic and outputs, while VBBAC provides a dedicated bias reference for AC-coupled inputs. VDD may be 2.5 V or 3.3 V; VBBAC self-adjusts to ~1.16 V (at 2.5 V VDD) or ~1.96 V (at 3.3 V VDD), enabling seamless interfacing between different voltage-domain clocks without external level shifters.

What thermal considerations apply to the ZH (TQFN) package?

The 16-pin TQFN package includes an exposed EPAD that must be soldered to a solid GND plane with ≥4 thermal vias. At 1.5 GHz operation and 70 mA supply current, this thermal path maintains junction temperature below 125°C in ambient up to +85°C - per Diodes' PD-2047 mechanical specification and DS43336 thermal characterization.