Analog Devices Inc./Maxim Integrated MAX4580CWE

Overview

MAX4580CWE 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 paths. It delivers 1.25Ω max on-resistance, 0.25Ω max R_ON match between channels, and 2.5nA max off-leakage at +85°C, enabling low-distortion switching in automatic test equipment and communication systems.

For engineers reviewing the MAX4580CWE datasheet, MAX4580CWE pinout, MAX4580CWE application, or MAX4580CWE equivalent, key selection criteria include its ±4.5V to ±20V dual-supply operation, TTL/CMOS-compatible logic thresholds, guaranteed R_ON flatness of 0.3Ω over signal range, and NC-only topology distinguishing it from MAX4590 (NO) and MAX4600 (mixed).

Technical Context

The MAX4580CWE implements a complementary MOSFET switch architecture with integrated level-shifting circuitry to support wide analog signal ranges up to ±15V. Its dual NC configuration ensures default-closed signal paths upon power-up or logic deassertion, critical for fail-safe signal continuity in instrumentation and PBX systems.

It features independent COM–NC channel pairs with matched conduction characteristics, guaranteed by design across temperature (–40°C to +85°C for E-grade; 0°C to +70°C for C-grade). Logic control inputs accept 0.8V/2.4V thresholds compatible with +12V single or ±15V dual supplies, eliminating external level translators.

Key Specifications

Pinout & Package

MAX4580CWE is housed in a 16-pin Wide SO (SOIC-W) package, 7.6mm × 10.3mm body, 1.27mm lead pitch, JEDEC MS-013 compliant. Pin 1 is top-left corner (notch-marked), with GND at Pin 5 and V+ at Pin 13.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4590CWE and ADG1419BRUZ, the MAX4580CWE uniquely satisfies applications demanding default-closed operation under power loss, dual-supply flexibility, and guaranteed R_ON matching - making it irreplaceable in reed-relay-replacement and telecom line-interface designs.

Availability

MAX4580CWE is available at Aetrix Electronics and suitable for automatic test equipment, communication system signal routing, and PBX/PABX line interface applications requiring stable component supply and long-term industrial availability.

Supply support for MAX4580CWE 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 MAX4580 series belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, rail-to-rail signal routing in mission-critical test and telecom infrastructure where reliability, matching, and fail-safe behavior are mandatory.

FAQ

What is the operating temperature range for MAX4580CWE?

The MAX4580CWE is specified for commercial temperature operation from 0°C to +70°C. This grade is distinct from the MAX4580EWE, which extends to –40°C to +85°C. The 'C' suffix denotes the 0°C to +70°C range, validated across all electrical parameters including on-resistance, leakage, and switching times in that interval. Always verify ambient and junction temperature limits against your PCB thermal design when deploying MAX4580CWE.

Does MAX4580CWE support single-supply operation?

Yes, MAX4580CWE supports single-supply operation from +4.5V to +36V, with V− connected to GND. In this configuration, analog signals swing from GND to V+, and logic inputs remain compatible via VL pin referenced to +5V. The device maintains 1.25Ω max on-resistance and 2.5nA max off-leakage at +85°C under single-supply conditions, as confirmed in the Electrical Characteristics table for V+ = +12V, V− = 0.

How does the NC (normally closed) configuration of MAX4580CWE affect system-level fail-safe behavior?

The NC configuration of MAX4580CWE ensures that both analog paths are closed when IN1 and IN2 are low (or un-driven), providing continuous signal connectivity during power-up, reset, or microcontroller failure. This fail-safe closure is critical in applications like PBX line interfaces and ATE fixtures where signal interruption could cause safety hazards or test aborts. Unlike NO switches, MAX4580CWE defaults to conduction - a behavior explicitly defined in its truth table and pin description.

Can MAX4580CWE be used with ±15V analog supplies and +5V logic supplies simultaneously?

Yes, MAX4580CWE is fully rated for simultaneous ±15V analog supplies (V+ = +15V, V− = –15V) and +5V logic supply (VL = +5V). Its internal level-shifting circuitry isolates logic thresholds from analog rails, allowing TTL/CMOS-compatible 0.8V/2.4V inputs even under dual-supply conditions. This configuration is validated in the "Electrical Characteristics–Dual Supplies" table and used in typical operating characteristic plots (e.g., TOC01–TOC02).

What is the purpose of the NC (no-connect) pins on MAX4580CWE, and how should they be handled on the PCB?

The NC pins (1, 3, 6, 8, 10, 15) on MAX4580CWE are not internally bonded and serve no electrical function. Per Maxim's Pin Description, they should be connected to GND or a low-impedance node to improve off-isolation and reduce crosstalk - a practice verified in layout guidelines and test circuits (e.g., Figure 4–5). Leaving them floating may degrade high-frequency performance and increase susceptibility to noise coupling in sensitive analog routing.