Analog Devices Inc./Maxim Integrated MAX4752EUD+

Overview

MAX4752EUD+ from Maxim Integrated is a quad single-pole/single-throw (SPST) analog switch with four normally closed (NC) channels, designed for low-voltage signal routing in battery-powered systems. It operates from a single +1.6V to +3.6V supply, delivers 0.9Ω maximum on-resistance at +3V, supports rail-to-rail analog signals, and achieves 30ns turn-on/25ns turn-off times. It is used in audio/video routing and low-voltage data-acquisition circuits where low leakage and high channel matching are critical.

For engineers reviewing the MAX4752EUD+ datasheet, MAX4752EUD+ pinout, MAX4752EUD+ application, or MAX4752EUD+ equivalent, key selection criteria include NC-switch topology, 0.12Ω max R_ON matching at +3V, 100mA continuous current handling, 1.8V CMOS logic compatibility, and TSSOP-14 package compatibility with space-constrained portable designs.

Technical Context

The MAX4752EUD+ implements four independent NC SPST switches using CMOS process technology, enabling bidirectional analog signal routing with minimal distortion. Its control logic interprets logic-high inputs as switch-open (open-circuit state) and logic-low inputs as switch-closed (low-R_ON path), directly supporting standard digital interface levels.

It features integrated ESD protection and internal diode clamping on all analog pins, allowing safe operation with analog signals extending to V+ or GND. The device maintains <5nA typical off-leakage and 75pF COM-on capacitance, ensuring minimal signal perturbation in high-impedance or high-frequency paths.

Key Specifications

Pinout & Package

The MAX4752EUD+ is housed in a 14-pin TSSOP package (3.0mm × 4.4mm, 0.65mm pitch) with exposed pad not present. All pins are surface-mount, lead(Pb)-free, and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4752EGE+T, the MAX4752EUD+ offers identical electrical performance in a more repairable TSSOP package, while TMUX1574RSVR trades NC reliability for marginally lower R_ON and broader supply range - making MAX4752EUD+ optimal for safety-critical, battery-fed NC-path applications.

Availability

MAX4752EUD+ is available at Aetrix Electronics and suitable for audio signal routing, low-voltage data-acquisition systems, and battery-powered power management requiring stable component supply across industrial, medical, and consumer electronics programs.

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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding applications.

The MAX4751/MAX4752/MAX4753 family was engineered specifically for ultra-low-voltage, low-R_ON analog switching in portable and battery-operated equipment where NC default behavior, rail-to-rail signal handling, and sub-1Ω conduction are mandatory.

FAQ

What is the default switch state of MAX4752EUD+ at power-up?

The MAX4752EUD+ features four normally closed (NC) switches, meaning each channel conducts by default when its control input (IN1–IN4) is unconnected or held at logic HIGH. At power-up, if control lines are pulled HIGH or left floating (with appropriate pull-up), all NC paths remain closed until actively opened by driving the respective INx pin LOW. This fail-safe behavior ensures uninterrupted signal flow during initialization sequences.

Can MAX4752EUD+ operate from a 1.8V supply, and how does performance change?

Yes, MAX4752EUD+ operates across +1.6V to +3.6V. At +1.8V supply, on-resistance increases to 2.5Ω max (vs. 0.9Ω at +3V), R_ON matching degrades to 0.25Ω max, and switching speeds slow to t_ON = 35ns/t_OFF = 30ns. However, logic thresholds adjust to VIH = +1.0V/VIL = +0.4V, preserving compatibility with 1.8V digital interfaces while maintaining ±5nA leakage and rail-to-rail analog range.

Does MAX4752EUD+ require external protection diodes for overvoltage on analog pins?

No - MAX4752EUD+ integrates internal ESD protection diodes on all analog pins (COM, NC), clamping signals to within ±0.3V of GND or V+. These diodes handle transient overvoltages up to ±200mA peak (1ms, 10% duty cycle). External diodes (e.g., Figure 5 in datasheet) are optional and only needed for sustained overvoltage exceeding absolute maximum ratings (e.g., >V+ + 0.3V).

How does charge injection affect precision applications using MAX4752EUD+?

MAX4752EUD+ exhibits 21pC typical charge injection at +3V supply, causing a transient voltage glitch (∆V = Q/C_L) on high-impedance nodes. In precision data acquisition, this can induce offset errors; mitigation requires limiting load capacitance (CL ≤ 100pF), adding small series resistance (<10Ω) before the switch, or synchronizing sampling to occur after settling (≥100ns post-switching). At +1.8V, charge injection drops to 8pC.

Is MAX4752EUD+ pin-compatible with MAX4751EUD+ or MAX4753EUD+?

Yes - all three variants (MAX4751EUD+, MAX4752EUD+, MAX4753EUD+) share identical 14-pin TSSOP pinouts and footprints. Only the internal switch configuration differs: MAX4751 has four NO switches, MAX4752 has four NC switches, and MAX4753 has two NO + two NC. Swapping MAX4752EUD+ for MAX4751EUD+ requires inverting control logic polarity to maintain functional equivalence.