Analog Devices Inc./Maxim Integrated MAX307EPI

Overview

MAX307EPI from Maxim Integrated is a precision, differential 2-of-8 CMOS analog multiplexer designed for high-fidelity signal routing in demanding industrial and military systems. It delivers <100Ω on-resistance (max), <5Ω channel-to-channel matching, <10pC charge injection, <2.5nA NO off-leakage at +85°C, and operates from ±4.5V to ±20V or +5V to +30V supplies - enabling rail-to-rail analog signal handling in test equipment and guidance systems.

For engineers reviewing the MAX307EPI datasheet, MAX307EPI pinout, MAX307EPI application, or MAX307EPI equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω over ±5V range), ESD protection >2000V, TTL/CMOS-compatible enable and address inputs, and compatibility with legacy DG407/DG507A designs without layout changes.

Technical Context

The MAX307EPI implements a dual 8-channel differential architecture with independent COMA and COMB outputs, controlled by three address lines (A0–A2) and a single active-high EN input. Its silicon-gate CMOS process ensures low power consumption (<1.25mW) and stable performance across -40°C to +85°C.

It supports unbalanced supply configurations (e.g., +24V/–5V), maintains <250ns transition time across temperature, and guarantees break-before-make timing (10–40ns) to prevent signal shorting during channel switching - critical for sample-and-hold and audio routing applications.

Key Specifications

Pinout & Package

MAX307EPI is housed in a 28-pin plastic DIP (PDIP) package with through-hole mounting and 0.6-inch width. Pin 1 is V+, pin 28 is COMA, and pin 27 is V−; all pins are electrically defined per Maxim's official pin description table.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with MAX307EPI, MAX307EWI offers identical performance in a surface-mount package for automated assembly, while ADG507AKRZ provides functional similarity at lower cost but sacrifices on-resistance matching, leakage, and flatness - making it less suitable for metrology-grade applications.

Availability

MAX307EPI is available at Aetrix Electronics and suitable for test equipment, guidance and control systems, military radios, and audio signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX307EPI 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, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX306/MAX307 product line targets high-accuracy signal routing in instrumentation and defense systems, emphasizing low distortion, temperature-stable matching, and robust ESD tolerance.

FAQ

What is the operating temperature range for MAX307EPI?

The MAX307EPI is rated for operation from –40°C to +85°C, as confirmed in the Ordering Information table and Absolute Maximum Ratings section. This extended industrial temperature grade makes it suitable for deployment in avionics, field-deployable test gear, and vehicle-mounted communication systems where ambient conditions exceed commercial limits. The MAX307EPI maintains full specification compliance across this entire range.

Does MAX307EPI support single-supply operation?

Yes, MAX307EPI supports single-supply operation from +5V to +30V, with V− tied to GND. In this configuration, the analog signal range is 0V to V+, e.g., 0V to +12V when V+ = +12V. The device retains TTL/CMOS logic compatibility and specified performance - including <100Ω on-resistance and <2.5nA leakage - under single-supply conditions, as verified in the Electrical Characteristics-Single Supply table.

Is MAX307EPI pin-compatible with the DG407?

Yes, MAX307EPI is explicitly documented as a plug-in upgrade for the industry-standard DG407 and DG507A. Pin functions, pin count (28-pin PDIP), and logic behavior (A0–A2 addressing, active-high EN) match exactly. No PCB modifications are required for replacement, and the improved specifications - including lower on-resistance, tighter matching, and higher ESD rating - are achieved without altering the physical layout or control software.

What is the maximum analog signal voltage range for MAX307EPI?

Under dual-supply operation (±4.5V to ±20V), MAX307EPI supports an analog signal range of ±15V - meaning inputs and outputs can swing from V− + 0.5V to V+ − 0.5V. This rail-to-rail capability is guaranteed across the full temperature range and enables direct interfacing with ±10V industrial sensors and DACs without level-shifting circuitry. The datasheet confirms ±15V operation with V+ = +15V and V− = –15V.

How does MAX307EPI handle differential signaling?

MAX307EPI implements true differential multiplexing via two independent 8-channel banks: NO1A–NO8A feed COMA, and NO1B–NO8B feed COMB. Each bank is selected simultaneously using the same A0–A2 address lines, allowing synchronized routing of matched differential pairs. This architecture preserves phase coherence and common-mode rejection - essential for applications like precision ADC front-ends and balanced audio paths - and is distinct from pseudo-differential or single-ended muxes.