Analog Devices Inc./Maxim Integrated MAX4580CAE+

Overview

The MAX4580CAE+ from Maxim Integrated is a dual SPST CMOS analog switch with two normally closed (NC) channels, designed for rail-to-rail signal routing in precision analog front-ends. It delivers 1.25Ω max on-resistance, 0.25Ω max R_ON match between channels, and 0.3Ω max R_ON flatness over ±10V signal range, enabling low-distortion switching in automatic test equipment and communication systems.

For engineers reviewing the MAX4580CAE+ datasheet, MAX4580CAE+ pinout, MAX4580CAE+ application, or MAX4580CAE+ equivalent, key selection criteria include dual NC topology, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, TTL/CMOS-compatible logic thresholds, guaranteed ESD protection >2kV, and 16-pin SSOP package compatibility with industrial temperature range (0°C to +70°C).

Technical Context

The MAX4580CAE+ implements a dual-channel, normally closed (NC) SPST analog switch architecture using high-voltage CMOS process technology. Each channel features matched on-resistance (≤0.25Ω), flat on-resistance (≤0.3Ω) across the full ±10V analog signal range, and rail-to-rail signal handling capability up to V+ = +36V and V− = −20V.

Control logic uses TTL/CMOS-compatible inputs with fixed +0.8V low and +2.4V high thresholds, independent of supply voltage-ensuring reliable switching under +12V single-supply or ±15V dual-supply conditions. Off-leakage is limited to 2.5nA max at +85°C, and charge injection is specified at 40pC typical, supporting precision sampling and multiplexing applications.

Key Specifications

Pinout & Package

MAX4580CAE+ is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, 5.3mm body width, and JEDEC MO-150 compliance. The package supports surface-mount assembly and provides thermal dissipation up to 571mW at +70°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4590CAE+, MAX4580CAE+ provides fail-closed operation critical for uninterrupted signal continuity; compared with ADG1419BRUZ, it supports true bipolar supplies and guarantees R_ON flatness over wider voltage ranges-making it uniquely suited for industrial and telecom applications demanding robust default states and rail-to-rail fidelity.

Availability

MAX4580CAE+ is available at Aetrix Electronics and suitable for automatic test equipment, communication system front-ends, and PBX/PABX line interface designs requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance (0°C to +70°C).

Supply support for MAX4580CAE+ 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, communications, and computing markets.

The MAX4580CAE+ belongs to Maxim's precision analog switch product line, engineered specifically for reed relay replacement and high-fidelity signal routing in test, telecom, and instrumentation systems where low on-resistance, channel matching, and rail-to-rail operation are mandatory.

FAQ

What is the default switch state of the MAX4580CAE+?

The MAX4580CAE+ features two normally closed (NC) switches: each channel conducts between COM and NC pins when its respective IN pin is logic low (≤0.8V). When IN rises to ≥2.4V, the switch opens. This fail-closed behavior ensures signal continuity during power loss or controller reset-critical for safety and reliability in test equipment and telecom line interfaces. The MAX4580CAE+ does not support normally open operation.

Does the MAX4580CAE+ support dual-supply operation?

Yes, the MAX4580CAE+ operates from ±4.5V to ±20V dual supplies, enabling true bipolar signal handling. With V+ = +15V and V− = −15V, it supports rail-to-rail analog signals from −15V to +15V. This capability is essential for legacy test equipment and telecom systems using ±15V rails. Single-supply mode (+4.5V to +36V) is also supported, with V− tied to GND.

What is the maximum allowable voltage difference between V+ and V− for the MAX4580CAE+?

The absolute maximum rating for V+ to V− is +44V. Exceeding this voltage risks permanent device damage. In normal operation, the MAX4580CAE+ is rated for dual-supply configurations up to ±20V (i.e., 40V total), which stays within the 44V limit. Designers must ensure proper power sequencing-V+ first, then V−, then logic inputs-to avoid overstress during power-up.

How does the VL pin function in the MAX4580CAE+?

The VL pin on the MAX4580CAE+ supplies the internal logic threshold generator independently of V+ and V−. It is typically connected to +5V and sets the +0.8V low and +2.4V high input thresholds regardless of analog supply voltages. This decoupling ensures consistent TTL/CMOS compatibility even when V+ = +36V or V− = −20V, eliminating the need for external level shifters when interfacing with standard digital controllers.

Is the MAX4580CAE+ pin-compatible with other variants in the MAX4580/MAX4590/MAX4600 family?

Yes, the MAX4580CAE+, MAX4590CAE+, and MAX4600CAE+ share identical 16-pin SSOP pinouts and electrical footprints. All three devices use the same pin assignments for V+, V−, GND, VL, IN1/IN2, COM1/COM2, and NC1/NC2/NO1/NO2. This allows direct substitution in PCB layouts-only the logic sense (NC vs. NO) differs, requiring firmware or schematic updates to match the intended default state.