Analog Devices Inc./Maxim Integrated MAX361CSE+T

Overview

MAX361CSE+T from Maxim Integrated is a precision quad SPST analog switch with normally closed (NC) configuration, designed for high-fidelity signal routing in rail-to-rail analog paths. It delivers <85Ω on-resistance (max), <3Ω channel-to-channel match, <9Ω on-resistance flatness over signal range, <500pA leakage at +25°C, and sub-250ns turn-on time. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply, supporting guidance systems and test equipment where low charge injection (10pC) and CMOS/TTL compatibility are critical.

For engineers reviewing the MAX361CSE+T datasheet, MAX361CSE+T pinout, MAX361CSE+T application, or MAX361CSE+T equivalent, key selection criteria include guaranteed on-resistance matching across channels, rail-to-rail analog signal handling up to ±15.5V, ESD tolerance >2000V, and compatibility with both unipolar and split-supply architectures in precision sample-and-hold and communications systems.

Technical Context

The MAX361CSE+T implements four independent SPST switches with NC logic polarity-each COM terminal connects to its corresponding NC terminal when the control input is logic low. Its silicon-gate 44V process enables low charge injection (10pC typ) and low power consumption (35µW), while maintaining flat on-resistance versus analog voltage swing (∆9Ω max).

Bipolar operation (±4.5V to ±20V) guarantees matched on-resistance (<2Ω at +25°C) and flatness specifications; these parameters degrade under unipolar bias. Input logic thresholds remain compatible with TTL/CMOS levels regardless of supply configuration, and all channels share common V+, V-, and GND connections without internal isolation.

Key Specifications

Pinout & Package

MAX361CSE+T uses a 16-pin narrow SOIC package (body width 3.9mm), RoHS-compliant and lead-free. Pin 1 is marked by a beveled corner; substrate tied to V+.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG441BRZ and TS5A4624DCKR, the MAX361CSE+T uniquely combines NC default state, 44V breakdown, bipolar/unipolar flexibility, and guaranteed on-resistance matching - making it irreplaceable in safety-critical or wide-supply industrial analog routing where channel consistency and fail-safe closure are mandatory.

Availability

MAX361CSE+T is available at Aetrix Electronics and suitable for guidance and control systems, test equipment, sample-and-hold circuits, and communications systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX361CSE+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) designs precision analog, mixed-signal, and high-reliability semiconductor solutions for industrial, medical, and aerospace applications.

The MAX361 series belongs to Maxim's precision analog switch product line, engineered specifically for applications demanding ultra-low charge injection, matched on-resistance, and robust rail-to-rail signal handling in harsh or safety-critical environments.

FAQ

What is the maximum analog signal voltage range supported by the MAX361CSE+T?

The MAX361CSE+T supports a maximum analog signal range of ±15.5V when operated with V+ = +16.5V and V− = −16.5V. This rail-to-rail capability is enabled by its 44V breakdown voltage and silicon-gate process. Operation outside this range risks exceeding absolute maximum ratings and may cause permanent damage. The actual usable range scales with applied supply voltages - for example, ±10V supplies limit analog swing to ±10.5V.

Does the MAX361CSE+T require external pull-up or pull-down resistors on its IN1–IN4 pins?

No, the MAX361CSE+T does not require external pull-up or pull-down resistors on IN1–IN4. Its CMOS/TTL-compatible inputs draw less than 500nA over temperature, and internal input structure ensures valid logic thresholds (0.8V low, 2.4V high) without external biasing. However, in noisy environments or floating-control scenarios, a 10kΩ pull-down is recommended to guarantee defined NC-closed state during power-up or reset.

Can the MAX361CSE+T be used with a single +12V supply, and how does that affect performance?

Yes, the MAX361CSE+T operates with a single +12V supply (V− tied to GND). In this configuration, analog signal range is limited to 0V–12V, on-resistance increases to 160Ω (max), and turn-on time extends to 400ns (max). Bipolar-mode guarantees (on-resistance match, flatness) do not apply. For applications needing those specs, ±15V operation is required - the MAX361CSE+T's dual-supply capability is a key differentiator.

Is the exposed pad on the MAX361CSE+T package electrically connected, and how should it be handled?

Yes, the exposed pad on the MAX361CSE+T (narrow SOIC) is electrically connected to V+. It must be soldered to a PCB copper pour tied to the V+ net to ensure thermal stability and optimal ESD performance. Leaving it unconnected or grounding it violates the internal substrate biasing scheme and may cause latch-up or parametric shift. Thermal relief patterns are not recommended - solid thermal connection is required.

How does the MAX361CSE+T's on-resistance matching specification impact system-level calibration?

The MAX361CSE+T's guaranteed <3Ω on-resistance match between channels directly enables system-level ratiometric calibration without per-channel trimming. In applications like multi-sensor data acquisition, this matching ensures identical gain error across all four switched paths, allowing a single reference measurement to correct all channels simultaneously - reducing calibration time, firmware complexity, and test fixture cost in high-volume manufacturing.