Microchip Technology VSC7104XVP-01

Overview

VSC7104XVP-01 from Vitesse Semiconductor is a quad-channel high-speed signal conditioner IC designed for backplane and copper cable signal integrity enhancement. It supports data rates up to 6.5 Gbps, provides global programmable input signal equalization (ISE) and output drive levels, features 20 ps added jitter and 20 ps channel-to-channel skew, and operates from a 2.5 V supply (3.3 V option available), deployed in serial repeater and fan-out buffering applications.

For engineers reviewing the VSC7104XVP-01 datasheet, VSC7104XVP-01 pinout, VSC7104XVP-01 application, or VSC7104XVP-01 equivalent, key selection considerations include its asynchronous operation across arbitrary data formats, differential 100 Ω input / 50 Ω output termination, 550–1100 mV programmable output swing, and per-channel 250 mW power dissipation at full rate.

Technical Context

The VSC7104XVP-01 implements fully asynchronous, unregistered signal paths with integrated input equalization (ISE) and output pre-emphasis control-enabling compensation of frequency-dependent loss in PCB traces and copper cables without clock domain constraints. Its differential architecture maintains signal integrity via on-die 100 Ω input termination and 50 Ω source-terminated outputs.

Each of the four channels operates independently with soft power-down capability, supporting dynamic channel gating. The device accepts input signals from 100 mV to 2400 mV differential amplitude and delivers programmable output swing between 550 mV and 1100 mV, with 50 ps rise/fall time and low 20 ps inter-channel skew for precision timing distribution.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar signal conditioning applications.

Compared with MAX3801ETM+ and DS100DF410, the VSC7104XVP-01 offers simpler asynchronous operation without clock dependency, lower power per channel, and native support for 2.5 V supply-making it optimal for cost-sensitive, multi-protocol backplane extension where retiming is unnecessary.

Availability

VSC7104XVP-01 is available at Aetrix Electronics and suitable for backplane signal enhancement, wideband signal clean-up, and HSSDC2/CX4 fan-out buffering applications requiring stable component supply and long-term industrial availability.

Supply support for VSC7104XVP-01 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

Vitesse Semiconductor was a fabless provider of high-speed networking ICs, specializing in signal integrity, timing, and packet processing solutions before acquisition by Microsemi (now Microchip Technology) in 2015.

The VSC7104XVP-01 belongs to Vitesse's Signal Conditioning product line, engineered specifically for extending the usable bandwidth of copper-based interconnects in telecom, storage, and enterprise switching systems.

FAQ

What data rates does the VSC7104XVP-01 support?

The VSC7104XVP-01 supports data rates from DC to 6.5 Gbps, covering common standards including 1.25 Gbps (Gigabit Ethernet), 2.5 Gbps (XAUI), 3.125 Gbps (PCIe Gen1), and 4.25 Gbps (Fibre Channel). Its fully asynchronous architecture allows operation at any intermediate rate without reconfiguration.

Does the VSC7104XVP-01 require an external clock?

No, the VSC7104XVP-01 operates fully asynchronously with no clock input required. Its unregistered signal path processes incoming NRZ data transparently regardless of frequency, phase, or pattern-making it ideal for multi-protocol environments where clock distribution is impractical.

What is the power supply requirement for VSC7104XVP-01?

The VSC7104XVP-01 operates from a nominal 2.5 V supply (VDD), with a 3.3 V option available for VDDIO. It draws 250 mW per channel at 6.5 Gbps, totaling ~1 W for full quad-channel operation. Decoupling capacitors must be placed near each VDD/VDDIO pin pair per datasheet layout guidelines.

How is the VSC7104XVP-01 configured for different signal conditions?

The VSC7104XVP-01 is configured via a standard two-wire I²C interface (SCL/SDA pins). Registers control global input signal equalization (ISE), output drive level, and pre-emphasis strength. Configuration persists across soft power-down but is lost on full power cycle unless stored externally.

Is the VSC7104XVP-01 pin-compatible with VSC7108 devices?

No, the VSC7104XVP-01 (quad-channel, 100-pin LQFP) is not pin-compatible with the VSC7108 (octal-channel, 144-pin LQFP). While both share identical functional architecture and register map, their package size, pin count, and power/ground pin distribution differ significantly-requiring separate PCB layouts.