Analog Devices Inc./Maxim Integrated MAX399CEE+

Overview

The MAX399CEE+ from Maxim Integrated is a dual 4-channel precision CMOS analog multiplexer with low on-resistance (< 100Ω), matched channel resistance (< 6Ω), and guaranteed flat on-resistance (< 11Ω) over ±4.5V signal range. It operates from single +3V to +15V or bipolar ±3V to ±8V supplies, features rail-to-rail signal handling, and is used in battery-operated systems, automatic test equipment, and audio signal routing.

For engineers reviewing the MAX399CEE+ datasheet, MAX399CEE+ pinout, MAX399CEE+ application, or MAX399CEE+ equivalent, key selection criteria include on-resistance matching, charge injection (< 5pC), off-leakage current (< 2.5nA at +85°C), ESD protection (> 2000V), and compatibility with DG409/DG509A footprints.

Technical Context

The MAX399CEE+ implements a dual independent 4:1 analog multiplexer architecture with TTL/CMOS-compatible digital control inputs (A0, A1, EN). Each 4-channel section selects one of four bidirectional analog inputs (NO1A–NO4A or NO1B–NO4B) to its respective common output (COMA or COMB).

It uses Maxim's low-voltage silicon-gate CMOS process to achieve low charge injection (< 5pC), low power consumption (< 300µW), and guaranteed electrostatic discharge protection exceeding 2000V. Signal path performance remains stable across temperature and supply variations, supporting precision sample-and-hold and low-voltage data-acquisition systems.

Key Specifications

Pinout & Package

MAX399CEE+ is supplied in a 16-pin QSOP package (E16-1), with exposed pad not present in this variant. Pin functions are validated per Maxim's official pin description table and functional diagrams.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX399CSE+, the MAX399CEE+ offers identical switching performance in a smaller QSOP footprint; compared with ADG409BRUZ, it delivers tighter RON matching, lower leakage, and superior ESD protection-critical for precision and field-reliable designs.

Availability

MAX399CEE+ is available at Aetrix Electronics and suitable for automatic test equipment, battery-operated systems, and audio signal routing requiring stable component supply and long-term production continuity.

Supply support for MAX399CEE+ 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, medical, and communications applications.

The MAX398/MAX399 product line targets high-fidelity analog signal routing in low-power, wide-supply-range systems-specifically engineered for sample-and-hold, test instrumentation, and portable sensor interfaces.

FAQ

What supply voltage ranges does the MAX399CEE+ support?

The MAX399CEE+ operates from a single +3V to +15V supply or bipolar ±3V to ±8V supplies. When using single-supply mode, V− must be connected to GND. The device maintains specified on-resistance, leakage, and switching performance across this full range, making it suitable for both battery-powered and industrial rail systems. Its rail-to-rail signal handling supports analog inputs spanning the entire supply range.

Is the MAX399CEE+ pin-compatible with industry-standard multiplexers?

Yes, the MAX399CEE+ is pin-compatible with the DG409 and DG509A analog multiplexers. This allows direct replacement in existing designs without PCB layout changes. Pin mapping for address lines (A0, A1), enable (EN), analog I/O (NO1A–NO4A, NO1B–NO4B, COMA, COMB), and supplies (V+, V−, GND) matches these legacy parts exactly in the 16-pin QSOP package.

What is the maximum allowable analog signal range for the MAX399CEE+?

The MAX399CEE+ supports an analog signal range of ±4.5V when operated with ±5V supplies, and scales proportionally with other supply voltages (e.g., ±3V supplies yield ±3V range). In single-supply mode with +5V, the signal range is 0V to +4.5V. This rail-to-rail capability ensures full utilization of ADC dynamic range and compatibility with unbuffered sensor outputs.

How does charge injection affect performance in sample-and-hold circuits using the MAX399CEE+?

Charge injection in the MAX399CEE+ is guaranteed ≤ 5pC, directly limiting voltage error on hold capacitors. For example, with a 100pF hold capacitor, the resulting step error is ≤ 50mV-well below 1 LSB for 12-bit systems at 5V full scale. This specification is tested and guaranteed across temperature, ensuring predictable settling behavior in precision acquisition stages.

Does the MAX399CEE+ require external protection diodes for overvoltage conditions?

No, external protection diodes are not required for normal operation within absolute maximum ratings. Internal protection diodes clamp terminal voltages to V+ + 0.3V and V− − 0.3V. However, if supply sequencing cannot be controlled (e.g., V− applied before V+), external series diodes may be added-but this reduces usable analog range by ~0.7V and is not recommended for single-supply use. The MAX399CEE+ itself includes >2000V HBM ESD protection.