Analog Devices Inc./Maxim Integrated MAX4603CAE+

Overview

MAX4603CAE+ from Maxim Integrated is a quad SPST analog switch IC with two normally open (NO) and two normally closed (NC) channels, 2.5Ω max on-resistance, ±15V dual-supply or +12V single-supply operation, and rail-to-rail signal handling - used in audio-signal routing, test equipment, and PBX systems where low distortion and mechanical relay replacement are critical.

For engineers reviewing the MAX4603CAE+ datasheet, MAX4603CAE+ pinout, MAX4603CAE+ application, or MAX4603CAE+ equivalent, this page delivers verified electrical specs, terminal roles, real-world use cases, and validated alternative parts for reed-relay-replacement and high-fidelity analog switching designs.

Technical Context

The MAX4603CAE+ implements CMOS-based transmission-gate architecture with independent digital control inputs per switch channel, enabling mixed NO/NC configuration. Its on-resistance flatness is guaranteed ≤0.4Ω over ±10V signal range under ±15V supplies, and R_ON matching between channels is ≤0.03Ω typical.

All four switches operate simultaneously with TTL/CMOS-compatible logic thresholds (0.8V low / 2.4V high), and the VL pin supports separate 5V logic supply while analog rails run from ±4.5V to ±20V or +4.5V to +36V - ensuring robust level-shifting and noise immunity in mixed-signal systems.

Key Specifications

Pinout & Package

MAX4603CAE+ is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, JEDEC MO-137AC compliant, 5.0mm × 6.2mm body size, and exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1412BRUZ and TS5A3157DCKR, the MAX4603CAE+ uniquely combines mixed NO/NC topology, ±20V dual-supply capability, and guaranteed R_ON flatness - making it irreplaceable in fail-safe telephony and high-voltage ATE where default-path integrity and signal fidelity are non-negotiable.

Availability

MAX4603CAE+ is available at Aetrix Electronics and suitable for audio-signal routing, automatic test equipment, and PBX/PABX systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.

Supply support for MAX4603CAE+ 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 MAX460x family was designed specifically for mechanical relay replacement in high-reliability, low-distortion analog signal routing - targeting test instrumentation, telecom infrastructure, and avionics where long-term parametric stability and ruggedized operation are mandatory.

FAQ

What is the operating temperature range for MAX4603CAE+?

The MAX4603CAE+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is confirmed in the Ordering Information table and applies specifically to the CAE suffix variant. The device's electrical characteristics - including on-resistance, leakage, and switching times - are fully specified and tested across this range, making MAX4603CAE+ suitable for office, lab, and non-extreme industrial environments where thermal management is controlled.

Does MAX4603CAE+ support single-supply operation?

Yes, MAX4603CAE+ supports single-supply operation from +4.5V to +36V. In this mode, V− (pin 4) is connected to GND (pin 5), and analog signals swing rail-to-rail between GND and V+. The datasheet confirms R_ON = 3Ω max and t_ON/t_OFF = 160ns/170ns typical under +12V single-supply conditions - validating its use in 12V industrial controllers and audio gear without negative rails.

How many normally open and normally closed switches does MAX4603CAE+ contain?

The MAX4603CAE+ contains exactly two normally open (NO) switches and two normally closed (NC) switches. This is explicitly defined in the General Description and confirmed by the functional diagram: pins 11 and 14 are NO terminals (NO3, NO4), while pins 3 and 6 are NC terminals (NC1, NC2). This mixed configuration enables fail-safe signal routing - for example, maintaining backup path continuity during control signal loss - which distinguishes MAX4603CAE+ from the NO-only MAX4602 or NC-only MAX4601 variants.

What package type is used for MAX4603CAE+?

MAX4603CAE+ uses a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, as stated in the Ordering Information table. The "CAE" suffix directly maps to this package - distinct from "CWE" (16 Wide SO) and "CPE" (16 Plastic DIP). The SSOP footprint measures 5.0mm × 6.2mm and complies with JEDEC MO-137AC, enabling high-density PCB layouts while maintaining hand-solderability and reflow compatibility.

Is MAX4603CAE+ pin-compatible with other MAX460x variants?

Yes, MAX4603CAE+ shares identical pinout and package with MAX4601CAE+ and MAX4602CAE+, as confirmed by the Pin Configurations diagram and Pin Description table. All three variants use the same 16-pin SSOP layout with identical terminal assignments (e.g., IN1–IN4 on pins 1/8/9/16, COM1–COM4 on pins 2/7/10/15). This allows drop-in replacement in existing designs when switching between NO-only, NC-only, or mixed NO/NC functionality - provided supply and signal constraints remain within spec.