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 analog systems. It delivers <100Ω on-resistance (typ. 60Ω), <5Ω channel-to-channel matching, <10pC charge injection, and operates from ±4.5V to ±20V or +5V to +30V supplies - enabling rail-to-rail signal handling in test equipment and military radios.

For engineers reviewing the MAX307CPI datasheet, MAX307CPI pinout, MAX307CPI application, or MAX307CPI equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), low leakage (<2.5nA NO off-leakage at +85°C), ESD protection >2000V, TTL/CMOS-compatible control inputs, and compatibility with industry-standard DG407/DG507A layouts.

Technical Context

The MAX307CPI implements a dual 8-channel differential architecture with independent COMA and COMB outputs, controlled by three address lines (A0–A2) and an active-high enable (EN). Its silicon-gate CMOS process ensures matched switch characteristics across both banks and minimal signal distortion over temperature.

It supports break-before-make switching (t_OPEN ≤ 40ns), fast transition times (t_TRANS < 250ns), and maintains low leakage (<20nA COM off-leakage at +85°C) under bipolar or single-supply operation - critical for sample-and-hold circuits and battery-operated guidance systems.

Key Specifications

Pinout & Package

MAX307CPI is housed in a 28-pin plastic DIP (PDIP) package with through-hole mounting and 0.6-inch width. Pin spacing follows JEDEC MS-011 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX307CPI, MAX307EWI offers identical functionality in a space-saving SO package with extended temperature range, while DG407DN provides legacy compatibility at the expense of precision - making MAX307CPI optimal for new designs demanding low distortion and tight matching.

Availability

MAX307CPI is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, battery-operated systems, and communications systems requiring stable component supply across commercial temperature grades.

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, automotive, and communications markets.

The MAX306/MAX307 product line was engineered for precision analog signal routing in mission-critical systems - emphasizing low on-resistance matching, ultra-low charge injection, and robust operation across military and industrial temperature ranges.

FAQ

What is the maximum analog signal voltage 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 full utilization of the supply rails without signal clipping, making it suitable for high-dynamic-range applications like precision instrumentation and military comms systems. The absolute maximum analog input is limited to (V− − 2V) to (V+ + 2V).

Does the MAX307CPI require external pull-up resistors on its address or enable pins?

No, the MAX307CPI does not require external pull-up resistors on A0–A2 or EN. Its CMOS inputs have low leakage (±1.0µA) and are fully TTL/CMOS-compatible with defined logic thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V). Internal input structure ensures reliable logic-level recognition without external biasing - simplifying interface design in microcontroller- or FPGA-driven systems using MAX307CPI.

Can the MAX307CPI operate from unbalanced supplies such as +24V and -5V?

Yes, the MAX307CPI can operate from unbalanced supplies like +24V and -5V, provided the difference between V+ and V− does not exceed +44V and each supply remains within its absolute maximum ratings (V+ ≤ +44V, V− ≥ -0.3V). This flexibility supports custom power architectures in avionics and industrial control systems where asymmetric rails are common, while maintaining full analog signal range and switching performance in MAX307CPI.

How does the MAX307CPI compare to the MAX306CPI in terms of channel configuration and use cases?

The MAX307CPI is a differential 2-of-8 multiplexer with separate COMA and COMB outputs, enabling independent routing of two analog signals - ideal for balanced signal paths in communications and test gear. In contrast, the MAX306CPI is a single-ended 1-of-16 device with one common output (COM), better suited for scanning multiple sensors into a single ADC. Both share identical electrical specs, but their pinouts and functional diagrams differ significantly, so MAX307CPI and MAX306CPI are not interchangeable.

Is the MAX307CPI RoHS-compliant and lead-free?

Yes, the MAX307CPI is RoHS-compliant and lead-free. Per Maxim's package documentation, the "C" grade PDIP variant uses lead-free finish and conforms to EU RoHS Directive 2011/65/EU. The package code suffix does not carry a "+", "#", or "-", indicating full compliance. Soldering profiles follow JEDEC J-STD-020 standards, with peak reflow temperature rated at +260°C for lead-free processes - verified for MAX307CPI manufacturing and assembly.