Analog Devices Inc./Maxim Integrated MAX4580CPE+

Overview

MAX4580CPE+ 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 systems. 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 interfaces.

For engineers reviewing the MAX4580CPE+ datasheet, MAX4580CPE+ pinout, MAX4580CPE+ application, or MAX4580CPE+ 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 configuration-critical for fail-safe signal path closure in reed relay replacement designs.

Technical Context

The MAX4580CPE+ implements a CMOS transmission-gate architecture optimized for bidirectional analog signal integrity. Its dual NC topology ensures both switches default to closed state when control inputs are deasserted, supporting safety-critical signal continuity requirements without external biasing.

It operates across wide supply ranges: +4.5V to +36V single supply or ±4.5V to ±20V dual supplies, with logic inputs referenced to VL (independent logic supply) and compatible with +0.8V/+2.4V TTL/CMOS thresholds-enabling direct interfacing with microcontrollers and FPGAs even under +12V or ±15V analog rails.

Key Specifications

Pinout & Package

MAX4580CPE+ is housed in a 16-pin plastic DIP package (0.300" width), with through-hole mounting and industry-standard footprint. Pin functions are validated per Maxim's official pin description table and top-view schematic.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A3159DCKR, the MAX4580CPE+ uniquely combines NC default behavior, ±20V dual-supply support, and guaranteed R_ON flatness-making it irreplaceable in safety-critical, wide-rail, and fail-safe analog routing applications.

Availability

MAX4580CPE+ is available at Aetrix Electronics and suitable for automatic test equipment, telecom infrastructure, industrial sensor multiplexing, and medical instrumentation requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4580CPE+ 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 MAX4580CPE+ belongs to Maxim's precision analog switch product line, engineered specifically for reed relay replacement and low-distortion signal routing in high-reliability test and measurement systems.

FAQ

What is the default switch state of MAX4580CPE+ when power is applied but control inputs are unconnected?

The MAX4580CPE+ features two normally closed (NC) switches, meaning both channels are conductive (ON) by default when IN1 and IN2 are at logic low (≤0.8V). If control inputs float, internal leakage may cause undefined states; Maxim recommends pulling IN1/IN2 to GND via ≤10kΩ resistors to guarantee NC closure during power-up or reset sequences. This behavior is intrinsic to the MAX4580CPE+ design and distinguishes it from NO or changeover variants.

Can MAX4580CPE+ operate with V+ = +24V and V− = GND in single-supply mode while maintaining rail-to-rail signal handling?

Yes, MAX4580CPE+ supports single-supply operation from +4.5V to +36V with V− tied to GND. When V+ = +24V and V− = GND, it fully handles rail-to-rail analog signals from 0V to +24V. The device's CMOS architecture ensures low on-resistance and flat R_ON across this range, as confirmed in the "Single Supply" electrical characteristics table (V+ = +24V, V− = 0). This capability is a defined operating condition for MAX4580CPE+, not an extrapolation.

What is the maximum continuous current rating per channel of MAX4580CPE+, and how does thermal derating apply in the 16-pin DIP package?

MAX4580CPE+ supports ±200mA continuous current per COM/NC channel, with peak pulsed current of ±300mA (1ms, 10% duty cycle). In its 16-pin plastic DIP package, continuous power dissipation is rated at 842mW at TA = +70°C, derating linearly at 10.53mW/°C above that temperature. This thermal specification is explicitly listed in the Absolute Maximum Ratings table for MAX4580CPE+ and defines safe sustained operation limits under worst-case ambient conditions.

How does the VL pin function in MAX4580CPE+, and what happens if it is left unconnected?

The VL pin on MAX4580CPE+ provides an independent logic supply reference for the IN1/IN2 inputs, allowing TTL/CMOS compatibility across varying analog supply voltages. It must be connected to a stable voltage between V− + 0.3V and V+ + 0.3V (typically +5V). Leaving VL unconnected violates the Absolute Maximum Ratings and risks incorrect logic interpretation, increased input current, or latch-up. This requirement is specified in the "Electrical Characteristics" tables and pin description for MAX4580CPE+.

Does MAX4580CPE+ support hot swapping or live insertion into a powered system?

No, MAX4580CPE+ does not support hot swapping. Proper power-supply sequencing is mandatory: V+ must be applied first, then V−, followed by VL and logic inputs. Violating this sequence risks exceeding absolute maximum ratings and causing permanent damage. The datasheet explicitly warns against uncontrolled sequencing and recommends external diode protection (Figure 1) only if sequencing cannot be guaranteed. This constraint applies directly to MAX4580CPE+ and is documented in the "Applications Information" section.