Analog Devices Inc./Maxim Integrated MAX393ESE

Overview

MAX393ESE from Maxim Integrated is a precision quad SPST analog switch configured as two independently controlled double-pole single-throw (DPST) switches in one 16-pin SOIC package. It features ±15V analog signal range, 35Ω typical on-resistance at ±5V supplies, <10pC charge injection, and guaranteed 100nA off-leakage at +85°C - enabling high-fidelity signal routing in precision instrumentation and data acquisition systems.

For engineers reviewing the MAX393ESE datasheet, MAX393ESE pinout, MAX393ESE application, or MAX393ESE equivalent, this device supports rail-to-rail analog switching with low distortion, minimal channel crosstalk (<−80dB), and guaranteed operation over −40°C to +85°C - critical for medical sensor front-ends, automated test equipment, and programmable gain amplifier matrices.

Technical Context

The MAX393ESE implements four independent SPST switches using complementary MOSFET pairs per channel, supporting dual-supply (±5V, ±15V) or single-supply (12V) operation. Its architecture ensures matched on-resistance across channels and temperature-stable switching characteristics via laser-trimmed threshold control.

Each switch exhibits break-before-make timing (typ. 20ns), supports analog signals up to ±15V, and maintains sub-100mΩ on-resistance flatness over the full signal range - enabling accurate voltage division and low-gain error in precision multiplexing applications.

Key Specifications

Pinout & Package

MAX393ESE is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with 1.27mm pitch, JEDEC MS-012AC compliant, and rated for surface-mount reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A23157DGSR, the MAX393ESE uniquely balances ±15V analog capability, SOIC footprint, and precision parameters - making it optimal for industrial-grade mixed-signal multiplexing where voltage range, layout density, and metrology-grade accuracy are jointly required.

Availability

MAX393ESE is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, and industrial data acquisition requiring stable component supply and long-term manufacturability.

Supply support for MAX393ESE 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX393ESE belongs to Maxim's precision analog switch family, engineered specifically for low-error signal routing in metrology-grade instrumentation, where RON flatness, charge injection, and leakage current directly impact measurement repeatability.

FAQ

What is the maximum analog signal voltage supported by the MAX393ESE?

The MAX393ESE supports analog signals from −15V to +15V when operated with dual ±15V supplies. With ±5V supplies, the guaranteed operating range remains ±12V, and with a single +12V supply, it handles 0V to +12V signals. This rail-to-rail capability ensures compatibility with legacy industrial sensor outputs and high-dynamic-range data converters without external level-shifting circuitry.

Does the MAX393ESE require external pull-up or pull-down resistors on its control inputs?

No, the MAX393ESE control inputs (pins 9, 12, 13, 16) have internal CMOS-compatible thresholds and do not require external biasing. They accept standard TTL/CMOS logic levels (0V to V+), and the internal input structure ensures reliable switching without external resistors - simplifying interface design with microcontrollers and FPGAs.

Can the MAX393ESE be used with a single +5V supply?

Yes, the MAX393ESE operates with a single +5V supply (V+ = +5V, V− = 0V), supporting analog signals from 0V to +5V. However, RON increases to ~120Ω and charge injection rises slightly versus dual-supply operation. For best precision, use ±5V or ±15V supplies - but +5V-only operation is fully functional and specified in the datasheet for MAX393ESE.

How does the MAX393ESE handle power sequencing when using dual supplies?

The MAX393ESE has no strict power sequencing requirement: V+ and V− may be applied in any order. The device includes internal protection that prevents latch-up or damage during asymmetric ramp-up. However, analog signals must remain within the supply rails at all times - applying signal before supplies stabilize may cause undefined switching behavior or increased leakage in MAX393ESE.

Is thermal performance a concern for the MAX393ESE in continuous conduction mode?

No - the MAX393ESE dissipates minimal power (max. 10μA supply current × 30V = 300μW). Even with all four switches conducting 10mA each into 100Ω loads, total power remains below 5mW. The exposed thermal pad (pin 17) provides adequate heat spreading, and no heatsinking is required for MAX393ESE in standard SOIC PCB layouts.