Analog Devices Inc./Maxim Integrated MAX4531CWP

Overview

The MAX4531CWP from Maxim Integrated is a low-voltage, CMOS analog switch IC configured as two independent 4-channel multiplexers, operating from single +2V to +12V or dual ±2V to ±6V supplies, with 150Ω max on-resistance, rail-to-rail signal handling, and 150ns enable turn-on time at ±4.5V - used in audio-signal routing and test equipment for precise analog path selection.

For engineers reviewing the MAX4531CWP datasheet, MAX4531CWP pinout, MAX4531CWP application, or MAX4531CWP equivalent, key selection criteria include dual-supply compatibility, break-before-make timing (10ns typ), TTL/CMOS logic thresholds, <1µW quiescent power, and ESD robustness (>2kV per Method 3015.7).

Technical Context

The MAX4531CWP integrates two fully independent 4-channel analog multiplexers (COMA/NO0A–NO3A and COMB/NO0B–NO3B), each with dedicated enable inputs (EN1/EN2), address latching (LE), and 2-bit binary address decoding (ADDA/ADDB). All switches share common supply rails (V+, V-, GND) but maintain signal-path isolation between sections.

Its architecture supports simultaneous or independent channel selection via latch-controlled address inputs, with break-before-make switching (10ns typ) preventing transient short-circuits during transitions. Logic inputs tolerate TTL- and CMOS-level signals across full supply range, enabling direct interfacing with microcontrollers and FPGAs without level-shifting.

Key Specifications

Pinout & Package

MAX4531CWP is housed in a 20-pin SO (Small Outline) package with 0.3" body width and standard JEDEC MS-013 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG708BRUZ and TS5A23159DGSR, the MAX4531CWP uniquely delivers dual independent 4-channel muxes with address latching, dual-supply operation, and break-before-make timing - making it irreplaceable in systems requiring coordinated, isolated analog path selection under mixed-voltage conditions.

Availability

MAX4531CWP is available at Aetrix Electronics and suitable for audio-signal routing, automated test equipment, and battery-operated medical sensors requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX4531CWP 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, medical, and communications systems.

The MAX453x family was engineered specifically for low-voltage, rail-to-rail analog signal routing in space-constrained, power-sensitive systems - emphasizing leakage control, supply flexibility, and logic compatibility without external support components.

FAQ

What supply voltages does the MAX4531CWP support?

The MAX4531CWP operates from a single supply of +2V to +12V (with V− tied to GND) or dual supplies of ±2V to ±6V. It maintains full functionality across this range, including rail-to-rail analog signal handling and TTL/CMOS logic compatibility - verified in electrical characteristics tables for both configurations. The MAX4531CWP datasheet specifies absolute maximum ratings up to +13V on V+ and −0.3V on V−.

How many analog channels does the MAX4531CWP implement?

The MAX4531CWP implements two independent 4-channel analog multiplexers: one with COMA and NO0A–NO3A, and another with COMB and NO0B–NO3B. This gives eight total analog I/O terminals, each configurable as input or output. Unlike the MAX4530 (8:1) or MAX4532 (3×SPDT), the MAX4531CWP provides parallel 4:1 routing with separate enable controls (EN1/EN2) and shared address lines (ADDA/ADDB).

Does the MAX4531CWP require external pull-up or pull-down resistors on logic inputs?

No, the MAX4531CWP does not require external pull-up or pull-down resistors on ADDA, ADDB, EN1, EN2, or LE inputs. Its logic thresholds are specified at 0.8V (low) and 2.4V (high) with guaranteed noise margins, and input leakage is ≤±1.0µA - allowing direct connection to microcontroller GPIOs or FPGA outputs. The MAX4531CWP truth table confirms valid operation with TTL- and CMOS-level drivers without biasing components.

What is the maximum analog signal frequency supported by the MAX4531CWP?

The MAX4531CWP supports analog signals up to 50MHz with reasonably flat response in 50Ω systems, as shown in Typical Operating Characteristics. At 10MHz, off-isolation is −65dB; above 20MHz, performance becomes layout-dependent due to capacitive coupling. For high-fidelity audio (<20kHz) or DC-coupled sensor signals, the MAX4531CWP delivers negligible distortion (THD = 0.025% typ) and <1.5pC charge injection - ensuring integrity across its full specified bandwidth.

Is the MAX4531CWP pin-compatible with industry-standard logic muxes?

Yes, the MAX4531CWP is explicitly pin-compatible with the 74HC4352 dual 4-channel analog multiplexer. Pin assignments for V+, V−, GND, COMA, COMB, NO0A–NO3A, NO0B–NO3B, EN1, EN2, ADDA, ADDB, and LE match the 74HC4352's 20-pin SO package - enabling drop-in replacement in legacy designs without PCB modification. This compatibility is stated in the MAX4531CWP datasheet General Description and confirmed in the Pin Configurations diagram.