Analog Devices Inc./Maxim Integrated MAX4752EUD

Overview

MAX4752EUD from Maxim Integrated is a quad single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, operating from a single +1.6V to +3.6V supply. It delivers 0.9Ω maximum on-resistance at +3V, 30ns turn-on time, and 100mA continuous current handling - enabling low-loss signal routing in battery-powered audio and data-acquisition systems.

For engineers reviewing the MAX4752EUD datasheet, MAX4752EUD pinout, MAX4752EUD application, or MAX4752EUD equivalent, key selection criteria include NC-switch topology, rail-to-rail analog signal support, 1.8V CMOS logic compatibility at +3V supply, and TSSOP-14 package constraints for space-constrained portable designs.

Technical Context

The MAX4752EUD implements four independent NC switches using CMOS process technology, supporting bidirectional analog signal routing across the full GND-to-V+ range. Its control inputs accept 1.8V logic thresholds when powered from +3V, and internal architecture ensures break-after-make timing is not applied - unlike the MAX4753.

All four channels share a common V+ supply and ground reference, with no internal inter-channel coupling. Each switch exhibits matched on-resistance (≤0.12Ω max at +3V) and flatness (≤0.1Ω max), ensuring consistent gain and minimal crosstalk (<–80dB at 1MHz) in multi-channel signal paths.

Key Specifications

Pinout & Package

MAX4752EUD is housed in a 14-pin TSSOP package (3.0mm × 4.4mm, 0.65mm pitch) with exposed pad not present - distinct from QFN variants. Pin 14 is V+, pins 7 and 13–12 are GND and INx control lines, and NC terminals occupy pins 1, 3, 8, 11 per functional diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4751EUD and ADG713BRUZ, the MAX4752EUD uniquely provides NC-default behavior within a 14-pin TSSOP footprint optimized for +1.6V to +3.6V battery operation - making it irreplaceable in fail-safe portable signal routing where continuity at power-up is non-negotiable.

Availability

MAX4752EUD is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across automotive, industrial, and consumer design cycles.

Supply support for MAX4752EUD 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 power, interface, sensing, and timing applications - with emphasis on low-power, high-integration solutions for portable and embedded systems.

The MAX475x family targets ultra-low-voltage analog switching in space-constrained, battery-operated devices - delivering sub-1Ω RON and nanosecond timing within miniature TSSOP and QFN packages.

FAQ

What is the default switch state of MAX4752EUD when the control input is unconnected or at logic LOW?

The MAX4752EUD features normally closed (NC) switches, meaning each channel conducts between NCx and COMx when its corresponding INx input is at logic LOW (≤0.5V). With inputs unconnected and pulled to GND via internal leakage paths, the device defaults to closed state - ensuring continuity without external pull-downs. This behavior is intrinsic to the MAX4752EUD's silicon design and confirmed in the truth table on page 7 of the datasheet.

Can MAX4752EUD operate reliably from a single 1.8V supply, and what performance changes occur?

Yes, MAX4752EUD operates across +1.6V to +3.6V, including +1.8V nominal supply. At +1.8V, on-resistance increases to 2.5Ω max (vs. 0.9Ω at +3V), turn-on time extends to 35ns max, and logic thresholds shift to VIH = +1.0V/VIL = +0.4V. These values are fully characterized in the +1.8V Electrical Characteristics table (page 4) and remain stable over –40°C to +85°C - making the MAX4752EUD viable for dual-cell NiMH or regulated 1.8V rail applications.

Does MAX4752EUD support bidirectional analog signal flow, and are there voltage limitations on the COM/NC pins?

Yes, MAX4752EUD supports fully bidirectional analog signal routing: COMx and NCx pins may serve interchangeably as input or output. The absolute maximum rating permits COMx/NCx voltages from –0.3V to (V+ + 0.3V), but functional operation is limited to GND-to-V+ for rail-to-rail signal integrity. Exceeding V+ or GND forward-biases internal ESD diodes - clamping is guaranteed, but continuous current must stay within ±100mA limits per pin to avoid damage. This bidirectional capability is inherent to the MAX4752EUD's CMOS transmission-gate architecture.

What is the thermal performance of MAX4752EUD in the 14-pin TSSOP package at maximum load?

In the 14-pin TSSOP package, MAX4752EUD has a 727mW maximum continuous power dissipation at TA = +70°C, derating by 9.1mW/°C above that temperature. Under worst-case conditions - all four switches conducting 100mA at 0.9Ω RON - total power dissipation is 36mW (4 × 100mA² × 0.9Ω), well below thermal limits. Junction temperature rise is <5°C above ambient, confirming safe operation without heatsinking in typical PCB layouts - a key reliability attribute of the MAX4752EUD design.

How does MAX4752EUD handle logic inputs driven above its V+ supply voltage?

MAX4752EUD logic inputs (IN1–IN4) tolerate voltages up to +4V regardless of V+ supply level - verified in Absolute Maximum Ratings (page 2). When V+ = +1.8V, INx may be driven to +3.6V without damage or latch-up, enabling direct interfacing with higher-voltage controllers. Input leakage remains ≤±1µA across the full range, and logic thresholds scale with V+ (VIH = 1.0V at +1.8V, 1.4V at +3V). This robustness is built into the MAX4752EUD's input protection structure and requires no external level-shifting circuitry.