Analog Devices Inc./Maxim Integrated MAX4690EAE+T

Overview

The MAX4690EAE+T from Maxim Integrated is a dual SPST normally open (NO) CMOS analog switch with 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 test equipment, data acquisition systems, and communication switching paths where low distortion and high reliability are required.

For engineers reviewing the MAX4690EAE+T datasheet, MAX4690EAE+T pinout, MAX4690EAE+T application, or MAX4690EAE+T equivalent, key selection criteria include guaranteed R_ON match (≤0.3Ω), off-leakage ≤5nA at +85°C, TTL/CMOS-compatible control inputs with separate VL pin, and ESD protection >2kV per Method 3015.7.

Technical Context

The MAX4690EAE+T implements two independent normally open analog switches using CMOS process technology, each with matched on-resistance and flat R_ON over its full ±10V signal range. It supports dual- or single-supply biasing while maintaining logic compatibility via dedicated VL pin referenced to GND.

Its architecture guarantees break-before-make timing only in the MAX4700 variant - the MAX4690EAE+T has no break-before-make requirement and operates as simple NO switches. Switching is controlled by two independent digital inputs (IN1, IN2), each driving one channel with standard TTL/CMOS thresholds (V_{IN_H} = 2.4V min, V_{IN_L} = 0.8V max).

Key Specifications

Pinout & Package

MAX4690EAE+T is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.635mm pitch, 5.0mm × 6.2mm body size, and exposed pad not present. Pin functions are validated per Maxim's official MAX4690 pin configuration diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A23159DCKR, the MAX4690EAE+T uniquely supports true dual-supply operation with separate VL, delivers lowest off-leakage in extended temperature, and maintains R_ON flatness across full rail-to-rail signal swing - making it optimal for precision industrial and test equipment.

Availability

MAX4690EAE+T is available at Aetrix Electronics and suitable for test equipment, data acquisition systems, and communication switching applications requiring stable component supply, long-term manufacturability, and guaranteed -40°C to +85°C industrial temperature performance.

Supply support for MAX4690EAE+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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX4690EAE+T belongs to Maxim's precision analog switch product line, designed specifically for high-reliability signal routing in automated test equipment, instrumentation, and telecom infrastructure where low on-resistance, tight matching, and wide supply flexibility are mandatory.

FAQ

What is the maximum signal voltage range supported by the MAX4690EAE+T?

The MAX4690EAE+T supports rail-to-rail analog signals from V− to V+, enabling operation across ±10V with dual supplies (±4.5V to ±20V) or 0V to +10V with single supplies (+4.5V to +36V). Its internal protection diodes clamp signals exceeding V+ or V−, but sustained overvoltage requires external blocking diodes per Figure 1 in the datasheet.

Does the MAX4690EAE+T require break-before-make timing in its switching operation?

No - the MAX4690EAE+T is a dual normally open (NO) switch with no guaranteed break-before-make characteristic. That feature is exclusive to the MAX4700 variant. The MAX4690EAE+T switches independently, and simultaneous ON states are permitted; designers must ensure external logic prevents unintended short-circuits in shared-path configurations.

Can the MAX4690EAE+T operate with a 3.3V logic supply while using ±15V analog supplies?

Yes - the MAX4690EAE+T features a dedicated VL pin that accepts 3.3V or 5V logic supplies independently of V+ and V−. With VL = 3.3V, IN1 and IN2 retain full TTL/CMOS compatibility (V_{IN_H} ≥ 2.0V, V_{IN_L} ≤ 0.8V), enabling seamless interface to modern low-voltage microcontrollers even when analog rails are ±15V.

What is the thermal performance of the MAX4690EAE+T in SSOP package at full load?

In its 16-pin SSOP package, the MAX4690EAE+T has a thermal resistance θ_JA of 140°C/W. At maximum continuous current (±200mA per channel) and worst-case R_ON (1.25Ω), power dissipation is 50mW per switch, resulting in ~7°C junction rise above ambient - well within the -40°C to +85°C operating range without forced cooling.

How does the MAX4690EAE+T compare to mechanical relays in terms of reliability and lifetime?

The MAX4690EAE+T offers >100 million operational cycles versus typical mechanical relay lifetimes of 100,000–1 million cycles. It eliminates contact wear, bounce, and coil failure modes, delivering mean time between failures (MTBF) exceeding 100 years in typical industrial use - making it the preferred replacement for reed relays in automated test equipment and data loggers.