Analog Devices Inc./Maxim Integrated MAX4783ETE

Overview

MAX4783ETE from Maxim Integrated is a high-speed, low-voltage, triple SPDT CMOS analog switch configured for rail-to-rail signal routing in portable and precision systems. It operates from +1.6V to +3.6V, delivers 0.7Ω on-resistance at +3V, 11ns turn-on time, and supports ±150mA continuous channel current - ideal for audio path switching in battery-powered instrumentation.

For engineers reviewing the MAX4783ETE datasheet, MAX4783ETE pinout, MAX4783ETE application, or MAX4783ETE equivalent, key selection criteria include its 3mm × 3mm thin QFN package, +1.8V CMOS logic compatibility, break-before-make timing (2ns), on-resistance flatness (0.1Ω), and guaranteed R_ON matching (0.3Ω) across all three SPDT sections.

Technical Context

The MAX4783ETE implements three independent single-pole/double-throw (SPDT) switches using matched CMOS transmission-gate architecture. Each switch features identical address decoding (A/B/C inputs), shared ENABLE control, and symmetrical bidirectional analog conduction with no inherent directionality.

Its digital interface uses +1.8V-compatible CMOS thresholds (VIH = 1.4V, VIL = 0.5V at +3V supply), while analog performance is defined by low charge injection (−110pC), 75pF output on-capacitance, and −90dB off-isolation at 1MHz - enabling high-fidelity signal integrity in multiplexed sensor and audio paths.

Key Specifications

Pinout & Package

MAX4783ETE is housed in a 16-pin 3mm × 3mm thin QFN package with exposed thermal pad (EP) tied to GND. Pin numbering follows JEDEC MO-220 standard with Pin 1 marked by corner chamfer or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4783EUE and MAX4619ETA+, the MAX4783ETE provides superior thermal performance in compact layouts, lowest on-resistance in the 1.6–3.6V range, and fastest switching - making it the optimal choice for portable, battery-sensitive, and high-fidelity analog routing.

Availability

MAX4783ETE is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply and RoHS-compliant packaging.

Supply support for MAX4783ETE 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 precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX4783ETE belongs to Maxim's high-speed analog switch family, engineered specifically for low-voltage, low-distortion signal routing in portable and instrumentation-grade systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4783ETE?

The MAX4783ETE supports rail-to-rail analog signals from 0V to V_CC, where V_CC ranges from +1.6V to +3.6V. This means the device passes signals spanning the full supply range without clipping - for example, 0V to +3.3V when powered from a 3.3V rail. Exceeding V_CC or going below GND risks forward-biasing internal ESD diodes, so input clamping must be externally managed if overvoltage conditions are possible. The MAX4783ETE does not support dual-supply operation.

Does the MAX4783ETE require external pull-up or pull-down resistors on its digital control pins?

No, the MAX4783ETE does not require external pull-up or pull-down resistors on A, B, C, or ENABLE pins. Its digital inputs have CMOS-compatible thresholds (VIH = 1.4V, VIL = 0.5V at +3V supply) and exhibit low input leakage (<1µA). Driving these pins directly from microcontroller GPIOs or FPGA outputs is sufficient. However, ENABLE should be actively driven low (not left floating) to ensure predictable switch activation, as an unconnected ENABLE defaults to undefined behavior due to noise susceptibility.

Can the MAX4783ETE be used in bidirectional signal paths such as I²C or UART lines?

The MAX4783ETE supports fully bidirectional analog signal flow - either terminal (X0/X1, Y0/Y1, Z0/Z1) can serve as input or output. However, it is not designed for digital bus protocols like I²C or UART because it lacks slew-rate control, fails to meet bus timing specifications (e.g., rise/fall time limits), and introduces capacitance (75pF on-state) that may violate protocol loading requirements. For digital bus switching, dedicated bus switches (e.g., MAX14661) are recommended. The MAX4783ETE is optimized for analog signal routing, not digital logic-level translation.

How does temperature affect the on-resistance of the MAX4783ETE?

The MAX4783ETE exhibits monotonic R_ON increase with rising temperature: at +3V supply, R_ON is typically 0.7Ω at +25°C, rises to ~0.9Ω at +85°C, and remains ~0.5Ω at −40°C. This variation is characterized and specified across the full −40°C to +85°C operating range, with ∆R_ON matching maintained at ≤0.6Ω over temperature. Designers using the MAX4783ETE in precision gain-setting or current-sensing paths should account for this drift - especially in wide-temperature industrial deployments where R_ON change impacts absolute accuracy.

Is the exposed pad (EP) on the MAX4783ETE package electrically connected, and how should it be handled?

Yes, the exposed pad (EP) on the MAX4783ETE's thin QFN package is internally connected to GND and serves as both a thermal dissipation path and a low-inductance ground return. It must be soldered to a solid GND plane on the PCB using a thermal via array (≥4 vias recommended). Leaving EP unconnected degrades thermal performance and may cause instability or increased noise. The datasheet specifies coplanarity tolerance including the EP, confirming its mechanical and electrical integration into the package structure - the MAX4783ETE relies on proper EP grounding for specified R_ON, switching speed, and reliability.