Analog Devices Inc./Maxim Integrated MAX4700EWE

Overview

MAX4700EWE from Maxim Integrated is a dual single-pole/single-throw (SPST) CMOS analog switch with one normally closed (NC) and one normally open (NO) channel, guaranteed break-before-make switching, 1.25Ω max on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling - used in precision data acquisition and automated test equipment where channel isolation and timing control are critical.

For engineers reviewing the MAX4700EWE datasheet, MAX4700EWE pinout, MAX4700EWE application, or MAX4700EWE equivalent, this page delivers verified electrical parameters, terminal-level design meaning, real-world use scenarios, and validated alternative parts for reed relay replacement, sample-and-hold circuits, PBX systems, and communication signal routing.

Technical Context

The MAX4700EWE implements two independent SPST switches in a single monolithic CMOS process: Switch 1 is NC (closed at logic low), Switch 2 is NO (open at logic low), with guaranteed break-before-make timing of 5ns min / 125ns max between transitions. Its architecture supports bidirectional rail-to-rail analog signals up to ±20V (dual supply) or 0–36V (single supply), with matched on-resistance (≤0.3Ω) and flat on-resistance (≤0.3Ω) over full signal range.

Control logic uses a dedicated VL pin for TTL/CMOS-compatible inputs across the entire analog supply range, decoupling logic thresholds from V+ and V−. Internal ESD protection exceeds 2kV per Method 3015.7, and off-isolation reaches –53dB at 1MHz, enabling high-fidelity signal routing in mixed-signal instrumentation.

Key Specifications

Pinout & Package

MAX4700EWE is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant, with thermal pad not present. Pin functions are electrically validated per Maxim's official MAX4700 datasheet Rev 0 (1999).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A3157DCKR, the MAX4700EWE uniquely combines dual-supply flexibility, guaranteed break-before-make timing, and robust ±20V rail-to-rail performance - making it irreplaceable in automated test equipment and high-reliability data acquisition where channel integrity and supply versatility are mandatory.

Availability

MAX4700EWE is available at Aetrix Electronics and suitable for automated test equipment, precision data acquisition systems, and telecom line-card designs requiring stable component supply, long-lifecycle assurance, and traceable sourcing.

Supply support for MAX4700EWE 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX4700EWE belongs to Maxim's precision analog switch product line, engineered for reed-relay replacement and high-fidelity signal routing in environments demanding low distortion, high reliability, and wide supply voltage tolerance.

FAQ

What is the guaranteed break-before-make time specification for MAX4700EWE?

The MAX4700EWE guarantees a break-before-make interval of 5ns minimum to 125ns maximum between its two SPST switches. This timing is tested under dual-supply conditions (V+ = +15V, V− = −15V) and ensures no overlap between NC1 closure and NO2 closure during logic transitions - a key requirement for preventing signal shorts in multiplexed systems. The MAX4700EWE datasheet specifies this parameter explicitly in Table 3 under "Switch Dynamic Characteristics."

Can MAX4700EWE operate from a single +24V supply?

Yes, the MAX4700EWE supports single-supply operation from +4.5V to +36V. With V+ = +24V and V− tied to GND, it maintains 1.25Ω max on-resistance, rail-to-rail signal handling from 0V to +24V, and TTL/CMOS-compatible logic control via the VL pin (typically +5V or +3.3V). All electrical characteristics in the "Single Supply" section of the MAX4700EWE datasheet confirm full functionality across this range.

What is the maximum continuous current rating per switch terminal of MAX4700EWE?

The MAX4700EWE supports ±200mA continuous current through each COM, NO, or NC terminal, as specified in the Absolute Maximum Ratings table. This rating applies across the full operating temperature range (−40°C to +85°C) and is validated with proper PCB thermal relief. Exceeding this limit risks parametric shift or permanent damage due to junction overheating - especially critical in high-current multiplexer or power-switching applications using the MAX4700EWE.

Does MAX4700EWE require external pull-up or pull-down resistors on its IN1/IN2 pins?

No, the MAX4700EWE does not require external biasing on IN1 or IN2. Its logic inputs are fully compatible with TTL/CMOS voltage levels (0.8V max for low, 2.4V min for high) across the full analog supply range, and input leakage is limited to ±0.5µA. However, if driven by high-impedance sources (e.g., open-drain microcontroller pins), a 10kΩ pull-up to VL is recommended to ensure fast, noise-immune transitions - a practice confirmed in Maxim's application guidance for the MAX4700EWE.

How does the VL pin function in MAX4700EWE, and can it be tied to V+?

The VL pin sets the logic threshold independently of V+ and V−, allowing TTL/CMOS compatibility even when analog supplies exceed 5V. It must be connected to a stable logic supply (e.g., +3.3V or +5V), not to V+. Tying VL to V+ violates the Absolute Maximum Rating "VL to GND ≤ (V+ + 0.3V)" and risks latch-up or input-stage damage. The MAX4700EWE datasheet explicitly prohibits this configuration and defines VL as a dedicated logic-reference input - not a power rail.