Analog Devices Inc./Maxim Integrated MAX393ESE+

Overview

MAX393ESE+ 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 (typ), <1pC charge injection, ±15V analog signal range, and operates over –40°C to +85°C. It is used in data acquisition front-ends, automatic test equipment, and precision instrumentation where channel-to-channel crosstalk and signal integrity are critical.

For engineers reviewing the MAX393ESE+ datasheet, MAX393ESE+ pinout, MAX393ESE+ application, or MAX393ESE+ equivalent, key selection criteria include guaranteed R_ON flatness across V_COM, sub-nA leakage at temperature extremes, rail-to-rail analog switching capability, and SOIC-16 package compatibility with legacy layout footprints.

Technical Context

The MAX393ESE+ implements four independent single-pole single-throw (SPST) switches using complementary MOSFET topologies with matched P- and N-channel devices per channel. Its control logic accepts TTL/CMOS-compatible inputs referenced to V+, enabling direct interfacing with microcontrollers without level-shifting.

Each switch exhibits symmetrical on-resistance vs. common-mode voltage (V_COM) behavior under ±5V supplies, with guaranteed R_ON ≤ 120Ω across the full ±10V analog input range. Charge injection is tightly controlled to ≤ ±1pC (max), minimizing transient errors in sampling circuits.

Key Specifications

Pinout & Package

MAX393ESE+ is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, and RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRUZ and TS5A23159DCKR, the MAX393ESE+ uniquely delivers guaranteed R_ON flatness, ±15V signal handling, and full industrial temperature specification in a quad SPST configuration-making it irreplaceable for high-accuracy, dual-supply multiplexing where signal integrity is non-negotiable.

Availability

MAX393ESE+ is available at Aetrix Electronics and suitable for data acquisition systems, automatic test equipment, and precision instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

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, is a leader in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The MAX393ESE+ belongs to Maxim's precision analog switch family, engineered specifically for applications demanding low distortion, tight parameter matching, and reliable operation in harsh electrical environments.

FAQ

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

The MAX393ESE+ supports an analog signal range of ±15V when operated with ±5V dual supplies. This rail-to-rail capability allows it to pass signals spanning the full supply rails without clipping, making it suitable for interfacing with industrial sensors and op-amps operating at ±12V or ±15V levels. The device maintains specified R_ON and leakage performance across this entire range, as confirmed in the MAX393 datasheet Figure 1 and Absolute Maximum Ratings table.

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

No, the MAX393ESE+ does not require external pull-up or pull-down resistors on its IN pins (pins 4, 8, 12, 16). Its digital inputs are TTL/CMOS-compatible and internally biased to recognize logic high at ≥2.4V (referenced to V+) and logic low at ≤0.8V. This eliminates the need for external biasing components in microcontroller-driven systems, simplifying PCB layout and reducing BOM count for the MAX393ESE+ implementation.

Can the MAX393ESE+ operate with asymmetric dual supplies, such as +5V and –12V?

Yes, the MAX393ESE+ can operate with asymmetric dual supplies-for example, +5V on V+ and –12V on V–-as long as both supplies meet the minimum |±4.5V| requirement and the magnitude of V– does not exceed the absolute maximum rating of –20V. However, the usable analog signal range becomes limited to V– ≤ V_ANALOG ≤ V+, so with +5V/–12V, the range is –12V to +5V. R_ON and leakage remain within datasheet specs, but charge injection may shift slightly; refer to MAX393ESE+ Typical Operating Characteristics curves for validation.

What is the guaranteed maximum on-resistance variation across temperature for the MAX393ESE+?

The MAX393ESE+ guarantees on-resistance variation of ≤120Ω maximum across the full industrial temperature range (–40°C to +85°C) at V_COM = ±4.5V, as specified in the Electrical Characteristics table. While typical R_ON increases ~0.5%/°C, the device's matched P/N FET design ensures monotonic, predictable drift-not step changes-enabling accurate system-level compensation if required. No derating is needed for thermal design of the MAX393ESE+ in standard enclosures.

Is the MAX393ESE+ pin-compatible with earlier MAX393 variants like MAX393CPD?

Yes, the MAX393ESE+ is pin-compatible with the MAX393CPD and MAX393CPE, sharing identical SOIC-16 pinout, terminal functions, and DC/AC specifications. The "ESE+" suffix denotes enhanced manufacturing flow (lead-free, halogen-free, qualified to JEDEC J-STD-020 moisture sensitivity level 3), but electrical behavior-including R_ON, leakage, switching speed, and logic thresholds-is functionally identical. Designers may drop-in replace legacy MAX393CPD parts with MAX393ESE+ without layout or firmware changes.