Analog Devices Inc./Maxim Integrated MAX14757EUE+

Overview

MAX14757EUE+ from Maxim Integrated is a quad normally open (NO) single-pole/single-throw (SPST) analog switch with 10Ω max on-resistance, rail-to-rail ±70V unipolar or ±35V bipolar supply operation, and 0.004Ω typical on-resistance flatness. It enables high-voltage signal routing in industrial control systems where precise low-distortion switching of ±20V sensor or actuator signals is required.

For engineers reviewing the MAX14757EUE+ datasheet, MAX14757EUE+ pinout, MAX14757EUE+ application, or MAX14757EUE+ equivalent, key selection criteria include its 5nA max on-leakage at +85°C, 60µs max enable turn-on time, functional compatibility with DG411/DG412, and TSSOP-16 package suitability for space-constrained high-voltage PCB layouts.

Technical Context

The MAX14757EUE+ uses BiCMOS process technology to achieve symmetrical bidirectional conduction and rail-to-rail analog-signal handling across its full ±70V unipolar or ±35V bipolar supply range. Its four independent SPST switches are controlled by logic-level EN1–EN4 inputs referenced to VL (1.6V to 11V), with internal protection diodes enabling overvoltage/undervoltage clamping without external components.

Each switch exhibits 5Ω typical on-resistance with 0.5Ω max matching between channels and 35pF/40pF off/on capacitance - critical for maintaining >96dB crosstalk and 65dB off-isolation at 100kHz in multi-channel instrumentation signal paths.

Key Specifications

Pinout & Package

MAX14757EUE+ is housed in a RoHS-compliant 16-pin TSSOP package (JEDEC MO-153, 5mm × 4.4mm × 1.1mm), optimized for thermal dissipation (θ_JA = 90°C/W) and high-density layout in industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX14756EUE+, the MAX14757EUE+ provides active-high enable logic for default-open signal paths, while ADG1419BRUZ trades voltage range for lower on-resistance - making MAX14757EUE+ optimal for high-voltage industrial multiplexing where fail-open behavior and rail-to-rail operation are mandatory.

Availability

MAX14757EUE+ is available at Aetrix Electronics and suitable for industrial control systems, instrumentation, and battery management applications requiring stable component supply, extended temperature performance, and high-voltage analog signal routing capability.

Supply support for MAX14757EUE+ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.

The MAX14756/MAX14757/MAX14758 family was designed specifically for high-voltage analog signal routing in harsh environments - delivering robust ±70V operation, ultra-low leakage, and rail-to-rail fidelity where legacy CMOS switches fail.

FAQ

What is the maximum continuous current rating per switch in MAX14757EUE+?

The MAX14757EUE+ supports ±50mA continuous current through each switch under normal operation. Exceeding this limit triggers internal leakage paths to VSS but does not damage the device if absolute maximum ratings (e.g., ±100mA peak, VDD/VSS voltage limits) remain within specification. This rating ensures reliable operation in 4–20mA loop interfaces and sensor excitation circuits without derating.

Can MAX14757EUE+ operate with asymmetric bipolar supplies?

Yes, MAX14757EUE+ supports asymmetric bipolar supplies - for example, VDD = +20V and VSS = -50V - as long as the total VDD-to-VSS differential remains ≤70V and both rails stay within their absolute maximum ratings (VDD ≤ +72V, VSS ≥ -36V). This flexibility enables direct interfacing with legacy industrial power rails that lack symmetrical ±35V generation.

Does MAX14757EUE+ require external clamping diodes for overvoltage protection?

No, MAX14757EUE+ integrates protection diodes from each A/B terminal to VDD and VSS, enabling inherent overvoltage/undervoltage clamping. When used with series current-limiting resistors (calculated per datasheet equations), these diodes safely clamp inputs beyond the supply rails - eliminating the need for external TVS or Schottky diodes in most field-connected analog I/O designs.

What is the logic supply voltage (VL) range supported by MAX14757EUE+?

MAX14757EUE+ accepts VL from +1.6V to +11V, allowing direct interface with 1.8V, 3.3V, and 5V logic families. The enable inputs (EN1–EN4) recognize logic high at ≥0.75×VL and logic low at ≤0.25×VL, ensuring noise-immune switching even with marginal logic margins. This wide VL range simplifies integration into mixed-voltage systems without level-shifting circuitry.

How does the on-resistance flatness of MAX14757EUE+ impact precision analog applications?

With 0.004Ω typical on-resistance flatness, MAX14757EUE+ maintains near-constant R_ON across its entire analog signal range (VSS to VDD). This minimizes harmonic distortion and gain error in precision applications like programmable-gain amplifiers or calibrated sensor multiplexers - where conventional switches exhibit >1Ω R_ON variation and introduce measurable nonlinearity at signal extremes.