Analog Devices Inc./Maxim Integrated MAX4541EPA

Overview

The MAX4541EPA from Maxim Integrated is a precision dual single-pole/single-throw (SPST) analog switch with two normally open (NO) channels, designed for low-voltage, single-supply operation from +2.7V to +12V. It delivers 60Ω max on-resistance, 2Ω max R_ON matching between channels, and 5pC max charge injection-enabling high-fidelity signal routing in battery-powered instrumentation and portable data acquisition systems.

For engineers reviewing the MAX4541EPA datasheet, MAX4541EPA pinout, MAX4541EPA application, or MAX4541EPA equivalent, key selection criteria include guaranteed break-before-make timing (not applicable to MAX4541), TTL/CMOS logic compatibility, leakage performance at +85°C (10nA max), and compatibility with +3.3V/+5V DAC/ADC interfaces requiring minimal signal distortion.

Technical Context

The MAX4541EPA implements CMOS transmission-gate architecture with rail-to-rail analog signal handling (0V to V+), supporting bidirectional signal flow across COM1/NO1 and COM2/NO2 terminals. Its control logic accepts standard TTL/CMOS input thresholds (V_INL ≤ 0.8V, V_INH ≥ 2.4V at +5V supply) and guarantees <5µW quiescent power consumption.

Designed for stable performance across temperature, it maintains ≤6Ω R_ON flatness over the full analog voltage range and exhibits ≤100pA off-leakage at +25°C-critical for high-impedance sensor multiplexing and sample-and-hold circuits where charge injection and leakage directly impact settling accuracy.

Key Specifications

Pinout & Package

MAX4541EPA uses an 8-pin Plastic DIP package (0.300" wide), with exposed pad not present. Pin functions are validated per Maxim's official pin configuration diagram for the MAX4541 family in DIP format.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4541ESA, the MAX4541EPA provides identical analog performance in a through-hole DIP package ideal for prototyping and legacy designs, while ADG1419BRUZ trades supply flexibility and lower R_ON for incompatible pinout and higher cost-making MAX4541EPA optimal for cost-sensitive, low-voltage, dual-channel routing where DIP mounting is acceptable.

Availability

MAX4541EPA is available at Aetrix Electronics and suitable for battery-operated instrumentation, medical sensor multiplexing, audio signal routing, and test equipment signal path control requiring stable component supply across extended temperature ranges (-40°C to +85°C).

Supply support for MAX4541EPA 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 demanding industrial, medical, and communications applications.

The MAX4541–MAX4544 family was developed specifically for low-voltage, single-supply analog switching in portable and space-constrained systems where low power, low leakage, and rail-to-rail signal integrity are essential.

FAQ

What is the maximum supply voltage rating for the MAX4541EPA?

The MAX4541EPA has an absolute maximum supply voltage (V+) of +13V, with recommended operating range from +2.7V to +12V. Exceeding +13V may cause permanent damage. The device is fully specified at +3.3V and +5V supplies, delivering 60Ω max R_ON and 5pC max charge injection within those conditions. Always apply V+ before analog signals to prevent latch-up.

Does the MAX4541EPA support break-before-make switching?

No, the MAX4541EPA does not support break-before-make switching. That feature is explicitly reserved for the MAX4543 and MAX4544 variants per the datasheet truth tables and functional diagrams. The MAX4541EPA implements two independent normally open SPST switches with no inter-channel timing coordination-meaning both channels can be on simultaneously, but neither guarantees isolation during transition.

What is the leakage current specification for MAX4541EPA at elevated temperature?

The MAX4541EPA specifies 10nA max COM on-leakage current (I_COM(ON)) and 10nA max COM off-leakage current (I_COM(OFF)) at +85°C, per Electrical Characteristics table notes. This performance is 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C-making it suitable for high-precision, high-impedance applications like medical sensor front-ends where leakage-induced offset must remain below 100µV.

Can the MAX4541EPA be used with a +3.3V supply?

Yes, the MAX4541EPA operates fully across +2.7V to +12V, including +3.3V nominal supplies. At +3.3V, typical on-resistance rises to 125Ω (max 275Ω), turn-on time increases to 400ns (max 800ns), and leakage remains ≤10nA at +85°C. Logic inputs remain TTL/CMOS compatible when driven 0V to +3.3V, and analog signals retain rail-to-rail (0V to +3.3V) capability-ideal for interfacing with modern low-voltage microcontrollers and ADCs.

Is the MAX4541EPA pin-compatible with older Maxim analog switches?

Yes, the MAX4541EPA is pin-compatible with the MAX323, MAX324, and MAX325 in the 8-pin DIP package per the datasheet's "Pin Compatible with" feature listing. This allows drop-in replacement in legacy designs without PCB modification, preserving existing layout, thermal design, and bill-of-materials structure while upgrading to lower leakage (10nA vs. 25nA), lower charge injection (5pC vs. 10pC), and wider supply range (+2.7V–+12V vs. +5V only).