Analog Devices Inc./Maxim Integrated MAX361ESE

Overview

MAX361ESE 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 max on-resistance, <2Ω channel-to-channel match, <10pC charge injection, <4nA off-leakage at +85°C, and operates from ±4.5V to ±20V or +10V to +30V supplies-ideal for sample-and-hold circuits requiring low distortion and minimal signal perturbation.

For engineers reviewing the MAX361ESE datasheet, MAX361ESE pinout, MAX361ESE application, or MAX361ESE equivalent, key selection criteria include guaranteed on-resistance flatness (∆9Ω max), ESD tolerance >2000V, bipolar/unipolar supply flexibility, and -40°C to +85°C industrial temperature rating.

Technical Context

The MAX361ESE implements four independent NC switches fabricated in Maxim's 44V silicon-gate process, enabling rail-to-rail analog signal handling up to ±15.5V. Its CMOS-compatible logic inputs drive internal transmission gates with matched threshold control, ensuring consistent switching behavior across channels and temperature.

Charge injection is actively minimized via balanced gate drive and layout symmetry, yielding <10pC typical-critical for precision sampling where hold capacitor settling must avoid voltage step errors. Off-isolation exceeds 60dB at 1MHz, and crosstalk remains below -100dB between any two channels under matched 50Ω/5pF test conditions.

Key Specifications

Pinout & Package

MAX361ESE is housed in a 16-pin narrow SOIC (SO) package with 1.27mm pitch, JEDEC MS-012AC compliant, body size 10.2mm × 5.3mm × 1.75mm, exposed pad connected to V+ per manufacturer recommendation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG441BRZ and TS5A3157DCKR, the MAX361ESE uniquely provides NC default behavior, guaranteed channel matching, bipolar/unipolar flexibility, and industrial temperature support-making it the sole option for robust, calibrated, fail-safe analog multiplexing in harsh environments.

Availability

MAX361ESE is available at Aetrix Electronics and suitable for sample-and-hold circuits, guidance and control systems, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX361ESE 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 MAX361/MAX362 product line was engineered specifically for precision analog signal routing in instrumentation-grade systems-emphasizing low distortion, predictable switching behavior, and reliability under wide supply and temperature extremes.

FAQ

What is the maximum analog signal voltage range supported by the MAX361ESE?

The MAX361ESE supports analog signals from (V− − 2V) to (V+ + 2V), enabling true rail-to-rail operation. With ±15V supplies, this yields a ±15.5V range; with +30V/V− = 0V, it supports 0V to +30V. This specification is guaranteed by design and verified across the full −40°C to +85°C operating range. The MAX361ESE's 44V breakdown voltage ensures safe operation even with transient overvoltage events.

Does the MAX361ESE require external protection diodes when used with ±15V supplies?

No, the MAX361ESE does not require external protection diodes under normal ±15V operation. Its ESD rating exceeds 2000V HBM, and absolute maximum ratings allow V+ to V− differentials up to 44V. However, if supply sequencing cannot be guaranteed (e.g., V− powers up before V+), two small-signal diodes in series with V+ and V− pins are recommended per Maxim's Application Information-though this reduces usable analog range by ~1V per rail without affecting R_ON or leakage.

How does the on-resistance matching specification apply to the MAX361ESE?

The MAX361ESE guarantees on-resistance matching of <2Ω between channels at +25°C and <4Ω over the full −40°C to +85°C range-but only under bipolar-supply operation (e.g., ±15V). This matching is critical for applications like programmable gain amplifiers or differential signal routing where gain consistency across channels is mandatory. The spec is measured with I_NO/NC = −10mA and V_COM = ±10V, per the Electrical Characteristics table.

Can the MAX361ESE operate from an unbalanced supply such as +24V and −5V?

Yes, the MAX361ESE supports unbalanced supplies including +24V/−5V configurations. The key constraint is that the V+ to V− differential must not exceed 44V, and analog signals must stay within (V− − 2V) to (V+ + 2V). In +24V/−5V operation, the usable analog range becomes −7V to +26V. Logic inputs remain CMOS-compatible, and performance parameters (R_ON, leakage, switching time) are characterized across the full specified supply range.

What is the significance of the N.C. pin (Pin 10) on the MAX361ESE package?

Pin 10 of the MAX361ESE is labeled N.C. (No Connection) and is not internally connected to any die structure. It must be left floating or tied to ground on the PCB-never driven or connected to a voltage rail. This pin exists for mechanical symmetry and package standardization; connecting it to V+ or V− risks latch-up or undefined behavior. The MAX361ESE datasheet explicitly states "N.C. = Not Internally Connected", and no electrical function is assigned to this terminal.