Analog Devices Inc./Maxim Integrated MAX393EUE+

Overview

MAX393EUE+ from Maxim Integrated is a precision quad SPST analog switch IC designed for low-distortion signal routing in ±5V dual-supply systems. It features 100Ω on-resistance (RON) at VCOM = 0V, 1pC typical charge injection, and ±15V analog signal range with guaranteed operation from –40°C to +85°C. It is used in programmable gain amplifiers, data acquisition front-ends, and automatic test equipment.

For engineers reviewing the MAX393EUE+ datasheet, MAX393EUE+ pinout, MAX393EUE+ application, or MAX393EUE+ equivalent, key selection criteria include guaranteed RON flatness over signal range, sub-1nA leakage at 125°C, dual-supply rail-to-rail switching capability, and TSSOP-16 package compatibility with high-density PCB layouts.

Technical Context

The MAX393EUE+ implements four independent single-pole single-throw (SPST) switches using enhanced n-channel/p-channel MOSFET topologies optimized for low distortion and minimal signal-dependent RON variation. Its control logic accepts TTL/CMOS-compatible inputs referenced to V+ and operates with no internal level-shifting circuitry.

Each switch channel maintains <±0.5Ω RON matching across channels and exhibits <±0.1% RON flatness over ±4.5V analog input range under ±5V supplies. The device uses dielectric isolation to achieve 1000VRMS channel-to-channel isolation and supports break-before-make timing via external control sequencing.

Key Specifications

Pinout & Package

TSSOP-16 package: 5mm × 4.4mm body, 0.65mm pitch, exposed pad for thermal enhancement and ground connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A3159DCKR, the MAX393EUE+ uniquely balances ultra-low charge injection (1pC), guaranteed RON flatness (±0.1%), and dual ±5V rail compatibility - making it optimal for precision DC-coupled instrumentation where signal integrity and temperature stability are critical.

Availability

MAX393EUE+ is available at Aetrix Electronics and suitable for programmable gain amplifiers, data acquisition front-ends, and automatic test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX393EUE+ 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 is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, connectivity, and security applications.

The MAX393EUE+ belongs to Maxim's precision analog switch product line, engineered for high-fidelity signal routing in test and measurement, medical instrumentation, and industrial control systems where low distortion and guaranteed parameter performance are mandatory.

FAQ

What is the maximum allowable analog signal voltage for the MAX393EUE+?

The MAX393EUE+ supports an analog signal range of ±15V when operated with ±5V supplies. This allows signals to swing fully from V− to V+ with margin for transients. Exceeding ±15V risks latch-up or permanent damage, even if supply rails remain within specification. Always ensure input signals stay within the absolute maximum rating of (V− – 0.3V) to (V+ + 0.3V).

Does the MAX393EUE+ require external pull-up or pull-down resistors on its IN pins?

No, the MAX393EUE+ IN pins have internal CMOS-compatible input structure with no requirement for external biasing. They accept logic-high thresholds ≥2.4V (for V+ = 5V) and logic-low thresholds ≤0.8V, and exhibit input leakage <100nA. External resistors are unnecessary unless noise immunity in high-EMI environments demands added hysteresis.

Can the MAX393EUE+ operate with asymmetric supplies such as +5V and –3V?

The MAX393EUE+ is characterized and guaranteed only for symmetric dual supplies (e.g., ±5V, ±3V). Asymmetric operation is not specified and may cause unpredictable RON behavior, increased charge injection, or reduced channel isolation. For non-symmetric rails, consider the MAX392EUE+ (±3V to ±20V) or verify performance empirically across temperature and signal range.

How does the exposed pad on the MAX393EUE+ TSSOP-16 package function electrically?

The exposed pad on the MAX393EUE+ is internally connected to GND and must be soldered to the PCB ground plane. It serves both thermal dissipation (reducing θJA to ≤65°C/W) and electrical grounding. Leaving it unconnected degrades thermal performance and may increase noise coupling; connecting it to any net other than GND violates the internal die construction and risks malfunction.

Is the MAX393EUE+ pin-compatible with earlier MAX393 variants like MAX393CPD?

Yes, the MAX393EUE+ shares identical pinout and functionality with the MAX393CPD (PDIP-16) and MAX393CPE (SOIC-16), differing only in package (TSSOP-16) and extended temperature grade (–40°C to +85°C vs. 0°C to +70°C). All share identical electrical specifications, timing, and control logic - enabling drop-in replacement in existing designs with layout adaptation for TSSOP footprint.