Analog Devices Inc./Maxim Integrated MAX4312EEE+T

Overview

The MAX4312EEE+T from Maxim Integrated is an 8-channel, single-supply video multiplexer-amplifier with adjustable-gain amplifier optimized for unity-gain stability, -3dB bandwidth of 265MHz, slew rate of 345V/µs, and 40ns channel switching time. It operates from +4V to +10.5V single supply or ±2V to ±5.25V dual supplies, features rail-to-rail outputs, and delivers broadcast-grade video performance with 0.06% differential gain and 0.08° differential phase error in applications such as video crosspoint switching and flash ADC input buffering.

For engineers reviewing the MAX4312EEE+T datasheet, MAX4312EEE+T pinout, MAX4312EEE+T application, or MAX4312EEE+T equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support details specific to the 16-pin QSOP package and -40°C to +85°C industrial temperature range.

Technical Context

The MAX4312EEE+T integrates an 8-input analog multiplexer with a high-speed, unity-gain-stable voltage-feedback amplifier. Its internal architecture supports rail-to-rail output swing (within 730mV of rails into 150Ω), input common-mode range extending to the negative supply rail, and low 8Ω open-loop output impedance over full output voltage range - minimizing gain error under varying loads.

It employs low-glitch switching logic with 40ns channel transition and ultra-low 10mV_p-p switching transients, enabled by constant 2pF input capacitance regardless of channel state. The device achieves 265MHz -3dB bandwidth and 345V/µs slew rate while maintaining <0.06% differential gain error and <0.08° differential phase error at 3.58MHz - meeting broadcast video signal integrity requirements.

Key Specifications

Pinout & Package

The MAX4312EEE+T is housed in a 16-pin QSOP (Quad Small Outline Package) with 0.15mm lead pitch and 5.0mm × 6.2mm body size, rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video multiplexer-amplifier applications.

Compared with MAX4311EEE+, the MAX4312EEE+ trades 79MHz bandwidth for double channel count and retains unity-gain flexibility; versus MAX4315EEE+, it sacrifices fixed-gain cable drive optimization for adjustable gain and 168MHz higher bandwidth - making it optimal for high-fidelity, multi-source video buffering.

Availability

MAX4312EEE+T is available at Aetrix Electronics and suitable for video crosspoint switching, broadcast signal routing, and flash ADC input buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX4312EEE+T 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

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, communications, and consumer applications.

The MAX4310–MAX4315 family was engineered specifically for high-speed, low-glitch video signal routing in broadcast, medical, and test equipment - combining multichannel multiplexing with unity-gain or fixed-gain amplification in space-constrained packages.

FAQ

What is the maximum operating supply voltage for the MAX4312EEE+T?

The MAX4312EEE+T supports a maximum supply voltage of +10.5V on VCC relative to VEE. Absolute maximum rating is 12V across VCC-to-VEE, but functional operation is specified from +4V to +10.5V single supply or ±2V to ±5.25V dual supplies. Exceeding +10.5V may degrade AC performance or reliability, and operation above 12V risks permanent damage per the absolute maximum ratings table in the datasheet.

Does the MAX4312EEE+T support rail-to-rail input common-mode range?

The MAX4312EEE+T supports input common-mode voltage from VEE to VCC – 2.8V (typical), which includes the negative rail - enabling direct connection of ground-referenced video sources. However, full rail-to-rail input is not supported: operation beyond VCC – 2.8V may increase switching time or cause nonlinear output behavior, though no phase reversal or latchup occurs. This ground-sensing capability eliminates need for level-shifting in many video applications.

What is the shutdown current consumption of the MAX4312EEE+T?

The MAX4312EEE+T draws 560µA (typical) quiescent supply current in shutdown mode when SHDN is driven low. This reduces total power dissipation significantly compared to the 7.4mA typical active current, and places the OUT terminal in a high-impedance state (typically 35kΩ). This feature enables power gating in battery-operated or thermally constrained video systems without requiring external isolation switches.

Can the MAX4312EEE+T drive a 75Ω back-terminated coaxial cable directly?

Yes, the MAX4312EEE+T can drive a 75Ω back-terminated cable directly due to its rail-to-rail output swing (within 730mV of rails into 150Ω) and low 8Ω open-loop output impedance. When configured for unity gain with appropriate feedback resistors, it maintains flat frequency response and low distortion into 75Ω loads. For optimal stability with reactive loads, layout best practices - including short traces, surface-mount feedback resistors, and minimal FB pin capacitance - must be followed per the datasheet's Layout section.

What is the differential phase error specification for the MAX4312EEE+T at 3.58MHz?

The MAX4312EEE+T exhibits a differential phase error of 0.08° at 3.58MHz under standard test conditions (RL = 150Ω to VCC/2, AVCL = +1V/V, TA = +25°C). This value is measured per EIA-770.1 and confirms suitability for NTSC broadcast video applications where chrominance timing accuracy is critical. The specification is guaranteed over the full -40°C to +85°C operating temperature range per the device's characterization data.