Analog Devices Inc./Maxim Integrated MAX392CUE+

Overview

MAX392CUE+ 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 automated test equipment, data acquisition front-ends, and precision instrumentation multiplexing.

For engineers reviewing the MAX392CUE+ datasheet, MAX392CUE+ pinout, MAX392CUE+ application, or MAX392CUE+ equivalent, key selection criteria include guaranteed RON flatness over signal range, sub-1pC charge injection for minimal settling error, leakage current <1nA at +85°C, and TSSOP-16 package compatibility with high-density PCB layouts.

Technical Context

The MAX392CUE+ implements four independent, normally-open analog switches controlled by TTL/CMOS-compatible digital inputs. Its channel architecture uses matched N- and P-channel MOSFETs to achieve symmetrical RON vs. VCOM performance and minimize distortion across the full ±10V signal swing.

It operates with dual supplies (±3V to ±7.5V) and supports rail-to-rail analog signals up to ±15V. Switching is specified with 100ns turn-on/turn-off times at V+ = +5V, V– = –5V, and RL = 1kΩ, enabling use in moderate-speed multiplexed sampling systems.

Key Specifications

Pinout & Package

MAX392CUE+ is housed in a 16-pin Thin Shrink Small Outline Package (TSSOP) with exposed thermal pad, optimized for thermal dissipation and high-density layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1412BRUZ and TS5A23159DCUR, the MAX392CUE+ uniquely balances ±15V signal capability, 100Ω RON, 1pC charge injection, and TSSOP-16 footprint-making it the preferred choice for industrial-grade, dual-supply multiplexing where precision, density, and thermal reliability are co-prioritized.

Availability

MAX392CUE+ is available at Aetrix Electronics and suitable for automated test equipment, precision instrumentation, and medical sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX392CUE+ 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, automotive, and communications markets.

The MAX392 belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-leakage signal routing in demanding test and measurement applications where parameter stability over voltage, temperature, and time is critical.

FAQ

What is the maximum analog signal voltage supported by the MAX392CUE+?

The MAX392CUE+ supports analog signals from –15V to +15V when operated with ±5V supplies. This rail-to-rail capability allows direct connection to industrial sensors and transducers without level-shifting circuitry. The device guarantees full functionality across this range with monotonic RON behavior and sub-1pC charge injection, making MAX392CUE+ suitable for high-fidelity signal conditioning in precision instrumentation.

Does the MAX392CUE+ require external pull-up or pull-down resistors on its digital control inputs?

No, the MAX392CUE+ digital inputs (IN1–IN4) are TTL/CMOS compatible and internally biased to recognize logic-high above 2.4V and logic-low below 0.8V with no external resistors required. The inputs draw <1µA leakage current, eliminating concerns about bus loading. This simplifies interface design with microcontrollers and FPGAs, and ensures reliable switching even in noisy industrial environments where MAX392CUE+ is commonly deployed.

Can the MAX392CUE+ operate from a single +5V supply?

No, the MAX392CUE+ is designed exclusively for dual-supply operation (e.g., ±5V). Its internal architecture requires both positive and negative rails to bias the complementary MOSFETs that form each switch. Attempting single-supply operation will result in incomplete channel turn-on, excessive RON, and potential latch-up. For single-supply alternatives, consider the MAX391 series, but note that MAX392CUE+ itself mandates dual supplies for specified performance.

How does the exposed thermal pad (Pin 16) on the MAX392CUE+ TSSOP package affect thermal performance?

The exposed thermal pad (EP) on the MAX392CUE+ TSSOP-16 package must be soldered to a PCB copper pour tied to ground for optimal thermal dissipation. When properly implemented, it reduces junction-to-board thermal resistance by ~35°C/W versus non-connected pads, keeping die temperature within specification under continuous switching at full analog load. This thermal management is essential for maintaining MAX392CUE+ leakage and RON stability in high-density, convection-cooled industrial modules.

Is the MAX392CUE+ pin-compatible with other devices in the MAX39x family?

Yes, the MAX392CUE+ shares identical pinout and package with the MAX391 (quad SPST), MAX393 (dual SPDT), and MAX394 (quad SPDT) in the same TSSOP-16 variant. This allows direct substitution in existing layouts when changing switch topology-provided the control logic and signal routing accommodate the different channel configurations. However, electrical parameters such as RON, charge injection, and leakage differ between variants, so MAX392CUE+ must be verified for the specific precision requirements of the target application.