Analog Devices Inc./Maxim Integrated MAX4611EPD+

Overview

MAX4611EPD+ from Maxim Integrated is a quad, low-voltage, single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, designed for rail-to-rail signal routing in battery-powered and precision analog systems. It operates from a single +2V to +12V supply, delivers ≤100Ω on-resistance at +5V, matches channels within 4Ω max, and exhibits <2nA off-leakage at +85°C - enabling high-fidelity audio switching and low-error data acquisition.

For engineers reviewing the MAX4611EPD+ datasheet, MAX4611EPD+ pinout, MAX4611EPD+ application, or MAX4611EPD+ equivalent, key selection criteria include NC-switch topology, guaranteed on-resistance flatness (≤18Ω), TTL/CMOS logic compatibility at +5V, and −40°C to +85°C industrial temperature operation in 14-pin PDIP packaging.

Technical Context

The MAX4611EPD+ implements four independent CMOS SPST switches with normally closed (NC) default state, controlled by active-high digital inputs compatible with TTL/CMOS thresholds (+0.8V low, +2.4V high at +5V). Each switch supports bidirectional analog signals from GND to V+, with internal protection diodes clamping input overvoltage.

Its architecture guarantees matched on-resistance across all four channels (ΔRON ≤ 4Ω at +5V) and minimal on-resistance variation (flatness ≤ 18Ω) over the full signal range - critical for multiplexer accuracy and channel-to-channel crosstalk suppression in sample-and-hold and sensor interface circuits.

Key Specifications

Pinout & Package

MAX4611EPD+ is housed in a 14-pin plastic DIP (dual in-line package) with through-hole mounting and RoHS-compliant lead-free finish. Pin 7 is GND; Pin 14 is V+; Pins 1–4 are NC1–NC4; Pins 2, 4, 9, 10 are COM1–COM4; Pins 13, 5, 6, 12 are IN1–IN4 control inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4611EPD+, MAX4611EUD+ offers identical functionality in a compact surface-mount package ideal for modern layouts, while ADG1411BRZ provides superior R_ON and flatness at the cost of higher supply voltage requirements - making MAX4611EPD+ the optimal choice for cost-sensitive, low-voltage, through-hole industrial designs.

Availability

MAX4611EPD+ is available at Aetrix Electronics and suitable for battery-operated equipment, low-voltage data-acquisition systems, and sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4611EPD+ 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 consumer applications.

The MAX4610/MAX4611/MAX4612 family was engineered for low-voltage, rail-to-rail analog signal routing in portable and precision measurement systems - emphasizing leakage control, channel matching, and single-supply simplicity.

FAQ

What is the maximum supply voltage rating for MAX4611EPD+?

The absolute maximum supply voltage (V+) for MAX4611EPD+ is +13V referenced to GND. Operation above this level risks permanent damage. For reliable +12V operation, a 0.1µF ceramic bypass capacitor must be placed directly at the V+ pin to suppress transients and ensure stability - as specified in the datasheet's "Operating Considerations for High-Voltage Supply" section.

Does MAX4611EPD+ support rail-to-rail analog signal switching?

Yes, MAX4611EPD+ supports rail-to-rail analog signal switching from GND to V+. Its CMOS architecture allows bidirectional signal flow across the NC and COM terminals without clipping, provided the analog signal remains within −0.3V to (V+ + 0.3V) - with internal clamping diodes limiting excursion beyond those bounds. This capability is confirmed in the "Analog Signal Range" parameter (0V to V+) across all supply voltages.

What is the on-resistance flatness specification for MAX4611EPD+?

MAX4611EPD+ guarantees on-resistance flatness of ≤18Ω maximum over its full analog signal range (GND to V+) at +5V supply. Flatness is defined as the difference between maximum and minimum R_ON measured across the signal range - a critical parameter for minimizing harmonic distortion and maintaining linearity in audio and precision measurement paths.

Can MAX4611EPD+ be used with a +3.3V supply?

Yes, MAX4611EPD+ operates down to +2V supply and is fully functional at +3.3V. At +3.3V, typical on-resistance increases to ~250Ω (per +3V supply characterization), and logic thresholds remain compatible (VIN_L ≤ 1.0V, VIN_H ≥ 2.4V). Input leakage and off-isolation remain within spec, though bandwidth reduces to ~100MHz - verified in the "ELECTRICAL CHARACTERISTICS-Single +3V Supply" table.

Is MAX4611EPD+ pin-compatible with industry-standard analog switches?

MAX4611EPD+ is pin-compatible with the industry-standard 74HC4066 and MAX4066 in 14-pin DIP, SO, and TSSOP packages. Pin assignments for COMx, NCx, INx, V+, and GND align exactly - enabling drop-in replacement where NC topology and −40°C to +85°C operation are acceptable. However, note that 74HC4066 lacks guaranteed R_ON matching and has higher leakage (>100nA), so MAX4611EPD+ adds value in precision applications.