Analog Devices Inc./Maxim Integrated MAX4602EWE+T

Overview

MAX4602EWE+T from Maxim Integrated is a quad, single-pole single-throw (SPST), normally open (NO) analog switch IC designed for precision signal routing in rail-to-rail analog paths. It delivers 4Ω max on-resistance at +25°C, 0.4Ω max on-resistance matching between channels, and 0.4Ω max on-resistance flatness over ±10V signal range. It operates from single +4.5V to +36V or dual ±4.5V to ±20V supplies and supports TTL/CMOS-compatible control inputs - ideal for reed relay replacement in automated test equipment.

For engineers reviewing the MAX4602EWE+T datasheet, MAX4602EWE+T pinout, MAX4602EWE+T application, or MAX4602EWE+T equivalent, key selection criteria include guaranteed R_ON match (≤0.4Ω), low off-leakage (≤0.5nA at +85°C), rail-to-rail signal handling, dual/single-supply flexibility, and 16-pin Wide SO package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The MAX4602EWE+T implements four independent CMOS SPST NO switches with matched channel characteristics and flat conduction profiles across its full analog input range. Its architecture ensures minimal signal distortion via low charge injection (20pC typical) and high off-isolation (–56dB typical at 1MHz).

It features separate logic supply (VL) and analog supplies (V+, V–), enabling level-shifted digital control while maintaining analog integrity. Input thresholds (0.8V/2.4V) guarantee robust TTL/CMOS interfacing across supply configurations without external level translation.

Key Specifications

Pinout & Package

MAX4602EWE+T is housed in a 16-pin Wide SO (SOIC-W) package with standard 0.3-inch body width and gull-wing leads. Pin spacing is 0.050 inch (1.27mm), compatible with IPC-7351B SOIC-W-16 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1412BRUZ and TS5A3157DCKR, the MAX4602EWE+T uniquely balances wide supply range (±20V), independent VL pin, guaranteed R_ON matching, and industrial temperature rating - making it the only option among the three qualified for high-voltage, mixed-rail, and extended-temperature ATE and avionics use cases.

Availability

MAX4602EWE+T is available at Aetrix Electronics and suitable for automated test equipment, avionics signal routing, and industrial sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4602EWE+T 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX460x family was engineered for high-reliability analog signal switching in environments demanding rail-to-rail operation, low distortion, and mechanical relay replacement - targeting test, measurement, and ruggedized embedded systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4602EWE+T?

The MAX4602EWE+T supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings of –44V to +44V across V+ and V−. In standard operation, it handles ±10V signals with guaranteed 0.4Ω R_ON flatness, and functions across single supplies from +4.5V to +36V or dual supplies from ±4.5V to ±20V. This makes MAX4602EWE+T suitable for both industrial control and high-voltage test instrumentation.

Does the MAX4602EWE+T require external pull-up or pull-down resistors on its digital inputs?

No, the MAX4602EWE+T does not require external pull-up or pull-down resistors on its IN1–IN4 pins. Its TTL/CMOS-compatible inputs have guaranteed logic thresholds of 0.8V (V_IL) and 2.4V (V_IH) across all supply configurations, including ±15V and +12V operation. The internal input structure provides sufficient noise margin and DC stability without external biasing - simplifying interface design with microcontrollers and FPGAs.

Can the MAX4602EWE+T be used with a single +5V supply?

Yes, the MAX4602EWE+T can operate from a single +5V supply, but only if V− is connected to GND and the analog signal range is limited to 0V to +5V. Note that R_ON increases at lower supply voltages (e.g., ~4Ω max at +5V), and the full rail-to-rail specification applies only when V+ ≥ +12V or dual supplies are used. For +5V-only systems requiring lowest R_ON, alternatives like the TS5A3157 may be more appropriate - though MAX4602EWE+T remains valid for general-purpose +5V switching where its industrial temp range and robustness are valued.

How is the VL pin used in the MAX4602EWE+T, and what happens if it's left unconnected?

The VL pin on the MAX4602EWE+T sets the logic reference voltage for the IN1–IN4 inputs and must be connected to a stable supply between (V− – 0.3V) and (V+ + 0.3V). If left floating, device behavior becomes undefined - inputs may misinterpret logic states, leading to unintended switch activation or erratic operation. For +12V single-supply use, VL is typically tied to +5V or +3.3V; for ±15V dual-supply use, VL = +5V is standard. Proper VL connection ensures reliable TTL/CMOS compatibility regardless of analog rail voltages.

Is the MAX4602EWE+T pin-compatible with other devices in the MAX460x family?

Yes, the MAX4602EWE+T is pin-compatible with the MAX4601EWE+T and MAX4603EWE+T in the same 16-pin Wide SO package. All share identical pinouts: IN1–IN4, COM1–COM4, NO1–NO4 (or NC1–NC4 for MAX4601), V+, V−, VL, and GND occupy identical positions. This allows direct substitution in layouts - for example, upgrading from NC to NO configuration by replacing MAX4601EWE+T with MAX4602EWE+T - provided control logic polarity and signal routing align with the NO function.