Analog Devices Inc./Maxim Integrated MAX307CPI+

Overview

MAX307CPI+ from Maxim Integrated is a precision, differential 2-of-8 CMOS analog multiplexer designed for high-fidelity signal routing in demanding measurement and control 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 military radios.

For engineers reviewing the MAX307CPI+ datasheet, MAX307CPI+ pinout, MAX307CPI+ application, or MAX307CPI+ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation value, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The MAX307CPI+ implements a dual 8-channel differential architecture with independent COMA and COMB outputs, controlled by three address inputs (A0–A2) and an active-high enable (EN). Its silicon-gate CMOS process ensures guaranteed flat on-resistance (<7Ω max variation over ±10V signal range) and low temperature drift across -40°C to +85°C operation.

It supports TTL/CMOS-compatible logic inputs (VAL ≤ 0.8V, VAH ≥ 2.4V), exhibits <250ns transition time, <40ns break-before-make interval, and maintains <20nA COM off-leakage at +85°C - making it suitable for sample-and-hold circuits where charge injection and leakage directly impact acquisition accuracy.

Key Specifications

Pinout & Package

MAX307CPI+ is housed in a 28-pin plastic DIP (PDIP) package with 0.6-inch width, RoHS-compliant, and rated for 0°C to +70°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX307CPI+, MAX307EPI+ offers extended thermal reliability without trade-offs, while ADG407BNZ sacrifices guaranteed matching, flatness, and ESD margin for lower cost - making MAX307CPI+ optimal for precision, ruggedized, commercial-temperature applications.

Availability

MAX307CPI+ is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, and battery-operated systems requiring stable component supply across production lifecycles.

Supply support for MAX307CPI+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and defense markets.

The MAX306/MAX307 family was engineered for precision analog signal routing in mission-critical systems - emphasizing low leakage, matched on-resistance, and robust ESD tolerance in harsh operating environments.

FAQ

What is the maximum analog signal range supported by the MAX307CPI+?

The MAX307CPI+ supports an analog signal range of ±15V when operated from ±15V supplies, and 0V to +12V with a +12V single supply. This rail-to-rail capability allows direct interfacing with sensors and DACs without external level-shifting circuitry. The device's absolute maximum ratings permit V+ up to +30V and V− down to −20V, but signal swing remains constrained by the actual supply rails applied. Always ensure V+ − V− ≤ 44V per datasheet limits.

Does the MAX307CPI+ support single-supply operation?

Yes, the MAX307CPI+ supports single-supply operation from +5V to +30V. In this mode, V− is connected to ground, and the analog signal range becomes 0V to V+. For example, with +12V supply, the usable signal range is 0V to +12V. Logic inputs remain TTL/CMOS-compatible, and all key specs - including on-resistance, leakage, and charge injection - are characterized and guaranteed under single-supply conditions per the datasheet's Electrical Characteristics tables.

What is the function of the N.C. pins on the MAX307CPI+?

Pins 3, 13, and 14 on the MAX307CPI+ are marked N.C. (No Connection) and have no internal connection. They must be left unconnected on the PCB - neither tied to ground, supply, nor floating via pull-up/down resistors. Connecting them risks introducing parasitic capacitance, crosstalk, or unintended current paths that could degrade switching performance or cause latch-up. This is explicitly confirmed in the Pin Description section of the MAX307 datasheet.

How does the MAX307CPI+ differ from the MAX306CPI+?

The MAX307CPI+ is a differential 2-of-8 analog multiplexer with two independent outputs (COMA and COMB), while the MAX306CPI+ is a single-ended 1-of-16 mux with one common output (COM). The MAX307CPI+ uses only three address lines (A0–A2) versus four (A0–A3) on the MAX306CPI+, and its pinout allocates separate banks for A-side and B-side inputs. Both share identical electrical specs (on-resistance, leakage, charge injection), but their architectures serve fundamentally different routing needs - differential signal integrity versus high-channel-count single-ended selection.

Is the MAX307CPI+ pin-compatible with industry-standard alternatives like the DG407?

Yes, the MAX307CPI+ is a plug-in upgrade for the DG407 and DG507A, with identical pinout, supply voltage ranges, logic thresholds, and switching characteristics. No PCB layout changes or firmware modifications are required. This compatibility is explicitly stated in the datasheet's "Benefits and Features" section and verified across all 28 pins - including COMA/COMB mapping to the DG407's OUT1/OUT2, and matching address/enable functionality. Performance improvements (lower RON, tighter matching, higher ESD) are delivered without interface disruption.