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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Analog Devices Inc./Maxim Integrated MAX303CSE+T

Name: MAX303CSE+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX303CSE+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX303CSE+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: MAX303CSE+T.pdf

Description:: IC SWITCH SPDT X 2 35OHM 16SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:3,469

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Product details

Overview

The MAX303CSE+T from Maxim Integrated is a precision dual SPDT analog switch with two normally open (NO) and two normally closed (NC) poles, designed for high-fidelity signal routing in test equipment and military radios. It delivers <35Ω on-resistance (max), <2Ω channel-to-channel match, <15pC charge injection, rail-to-rail analog signal handling (±15V), and operates from ±4.5V to ±20V supplies.

For engineers reviewing the MAX303CSE+T datasheet, MAX303CSE+T pinout, MAX303CSE+T application, or MAX303CSE+T equivalent, this device is selected for low-distortion multiplexing, precision sample-and-hold circuits, and battery-operated systems requiring guaranteed flat on-resistance and sub-100ns switching.

Technical Context

The MAX303CSE+T implements a silicon-gate CMOS architecture optimized for analog signal integrity. Its dual SPDT topology supports break-before-make timing (10–20ns), enabling glitch-free channel switching in guidance systems and communication front-ends.

It features independent logic-level compatibility: TTL/CMOS inputs with VL = +5V, while maintaining full analog range (V− to V+) across ±4.5V to ±20V supply operation. Charge injection is tightly controlled at ≤15pC, critical for minimizing settling error in precision acquisition paths.

Key Specifications

Parameter	Value and Actual Design Meaning
On-Resistance (max)	35Ω - ensures minimal signal attenuation and gain error in 50Ω–1kΩ impedance interfaces
On-Resistance Match	<2Ω - enables accurate differential signal switching without channel imbalance
Charge Injection	<15pC - reduces voltage step error in sample-and-hold and ADC driver stages
Turn-Off Time	<100ns - supports >5MHz multiplexed signal sampling without timing skew
Analog Signal Range	V− to V+ - allows true rail-to-rail AC/DC coupling with ±15V supplies
Off-Leakage (85°C)	<6nA - preserves accuracy in high-impedance sensor front-ends and battery-monitoring circuits
Supply Range	±4.5V to ±20V - supports wide-input industrial and military power architectures

Pinout & Package

MAX303CSE+T is housed in a 16-pin narrow SOIC (S16-2) package, 7.5mm × 4.4mm body, 1.27mm pitch, RoHS-compliant, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1, 8	COM1, COM2	Analog common terminals - bidirectional signal path shared between NO/NC poles per switch
2–7	N.C.	No internal connection - unused pins; must remain unconnected per design
9, 16	NC1, NC2	Analog source (normally closed) - connects to COM when IN = logic low
10, 15	IN2, IN1	Digital control inputs - TTL/CMOS-compatible; active-high logic controls SPDT state
11	V+	Positive supply - substrate-connected; sets upper analog rail and powers internal circuitry
12	VL	Logic supply - fixed at +5V for TTL compatibility; decoupling required
13	GND	Ground reference - serves as negative supply return and logic reference
14	V−	Negative supply - sets lower analog rail; must be ≤44V below V+

Key Features

Feature	Design Value
Rail-to-rail analog capability	Supports ±15V signals with no clipping - essential for wide-dynamic-range instrumentation
Guaranteed flat R_ON	Δ3Ω max over full signal range - maintains linearity in audio and sensor conditioning paths
Break-before-make timing	10–20ns delay - prevents momentary short-circuit during channel transition in safety-critical systems
Low off-isolation degradation	72dB at 1MHz - suppresses crosstalk between adjacent channels in dense PCB layouts
Ultra-low power consumption	35µW typical - extends battery life in portable test gear and avionics subsystems

Applications

Test Equipment	Military Radios
Use Scenario: Automated test systems performing multi-channel signal routing and calibration verification. IC Role / Device Role / Timing Role: Dual SPDT analog switch enabling sequential connection of DUTs to measurement instruments. Use Value: <2Ω R_ON match ensures consistent gain scaling across channels; <100ns t_OFF supports 10MHz scan rates.	Use Scenario: Secure voice/data transceivers requiring RF front-end signal path selection under EMI stress. IC Role / Device Role / Timing Role: Precision analog switch isolating receive/transmit paths and antenna diversity networks. Use Value: 44V breakdown and ±20V supply support enable robust operation in harsh vehicular power environments.
Sample-and-Hold Circuits	Battery-Operated Systems
Use Scenario: High-resolution data acquisition modules capturing fast transient waveforms. IC Role / Device Role / Timing Role: Low-charge-injection switch gating analog input to hold capacitor before ADC conversion. Use Value: ≤15pC charge injection limits hold-mode voltage error to <1LSB in 16-bit systems with 10nF capacitors.	Use Scenario: Portable medical monitors and handheld field testers operating from single-cell Li-ion or alkaline stacks. IC Role / Device Role / Timing Role: Low-power analog multiplexer selecting sensor inputs or reference voltages. Use Value: 35µW quiescent power and ±4.5V minimum supply allow direct integration with 5V buck-boost regulators.

Test Equipment

Military Radios

Use Scenario: Automated test systems performing multi-channel signal routing and calibration verification.

IC Role / Device Role / Timing Role: Dual SPDT analog switch enabling sequential connection of DUTs to measurement instruments.

Use Value: <2Ω R_ON match ensures consistent gain scaling across channels; <100ns t_OFF supports 10MHz scan rates.

Use Scenario: Secure voice/data transceivers requiring RF front-end signal path selection under EMI stress.

IC Role / Device Role / Timing Role: Precision analog switch isolating receive/transmit paths and antenna diversity networks.

Use Value: 44V breakdown and ±20V supply support enable robust operation in harsh vehicular power environments.

Sample-and-Hold Circuits

Battery-Operated Systems

Use Scenario: High-resolution data acquisition modules capturing fast transient waveforms.

IC Role / Device Role / Timing Role: Low-charge-injection switch gating analog input to hold capacitor before ADC conversion.

Use Value: ≤15pC charge injection limits hold-mode voltage error to <1LSB in 16-bit systems with 10nF capacitors.

Use Scenario: Portable medical monitors and handheld field testers operating from single-cell Li-ion or alkaline stacks.

IC Role / Device Role / Timing Role: Low-power analog multiplexer selecting sensor inputs or reference voltages.

Use Value: 35µW quiescent power and ±4.5V minimum supply allow direct integration with 5V buck-boost regulators.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADG403BRZ	Higher on-resistance (60Ω typ), no guaranteed R_ON match, 12V max supply	Limited to lower-voltage industrial sensors; unsuitable for ±15V military radios	Select only if supply is ≤12V and channel matching is non-critical
TS5A23157DRCR	Single-supply only (+1.65V to +5.5V), 0.9Ω R_ON, but no NC/NO configuration	Designed for low-voltage portable consumer electronics, not bipolar analog systems	Use only in 3.3V/5V battery-powered signal routing where SPDT polarity control is unnecessary

Compared with ADG403BRZ and TS5A23157DRCR, the MAX303CSE+T uniquely combines bipolar ±20V operation, guaranteed R_ON matching, and true SPDT (NO+NC) topology-making it irreplaceable in precision test and defense-grade analog signal management.

Availability

MAX303CSE+T is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, and battery-operated systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX303CSE+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 power management ICs for demanding industrial, automotive, and communications applications.

The MAX301/MAX303/MAX305 family was engineered specifically for high-accuracy, high-speed analog switching in mission-critical systems where signal fidelity, timing integrity, and supply flexibility are non-negotiable.

FAQ

What is the maximum allowable voltage difference between V+ and V− for the MAX303CSE+T?

The MAX303CSE+T has an absolute maximum rating of 44V between V+ and V−. Exceeding this risks permanent damage. Operation at ±20V (40V total) is fully specified and recommended for rail-to-rail analog signal handling. Always observe proper power sequencing: V+ first, then VL, then V− and logic inputs.

Does the MAX303CSE+T support single-supply operation, and what is the valid range?

Yes, the MAX303CSE+T supports single-supply operation from +10V to +30V. In this mode, GND serves as the reference, V− is tied to GND, and analog signals swing from 0V to V+. The device retains TTL/CMOS logic compatibility and all key specs-including <35Ω R_ON and <15pC charge injection-remain guaranteed.

What is the function of the VL pin on the MAX303CSE+T, and can it be tied to V+?

The VL pin sets the logic threshold: at +5V, the MAX303CSE+T is TTL-compatible; at other voltages, it operates at CMOS levels. VL must not exceed V+ or drop below (GND − 0.3V). Tying VL directly to V+ is allowed only if V+ = +5V; otherwise, use a dedicated +5V rail or regulator to ensure reliable logic-level recognition and prevent input current leakage.

How does the MAX303CSE+T achieve break-before-make switching, and is it guaranteed?

The MAX303CSE+T guarantees break-before-make timing of 10–20ns (at +25°C) via internal logic delay circuitry. This prevents momentary shorting between NC and NO paths during state transitions-critical in power-sensitive or fault-tolerant systems. The specification is tested and guaranteed across the full temperature range per the datasheet's dynamic characteristics table.

Can the MAX303CSE+T be used in a +12V single-supply system with 0V to +10V analog signals?

Yes. With V+ = +12V, V− = GND, and VL = +5V, the MAX303CSE+T fully supports 0V to +10V analog signals. Its on-resistance remains flat (<5Ω variation) across that range, leakage stays below 250pA at +25°C, and switching times stay under 150ns. No level-shifting is needed-the device natively handles this configuration.

MAX303CSE+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Circuit:: SPDT

Multiplexer/Demultiplexer Circuit:: 2:1

Number of Circuits:: 2

On-State Resistance (Max):: 35Ohm

Channel-to-Channel Matching (ΔRon):: 500mOhm

Voltage - Supply, Single (V+):: 10V ~ 30V

Voltage - Supply, Dual (V±):: ±4.5V ~ 20V

Switch Time (Ton, Toff) (Max):: 150ns, 100ns

-3db Bandwidth:: -

Charge Injection:: 10pC

Channel Capacitance (CS(off), CD(off)):: 12pF, 12pF

Current - Leakage (IS(off)) (Max):: 500pA

Crosstalk:: -90dB @ 1MHz

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

MAX303CSE+T FAQ

1.How can I place an order for MAX303CSE+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX303CSE+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX303CSE+T reliable?

The price and inventory of MAX303CSE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX303CSE+T is usually 5 days.

3.What payment methods are accepted for MAX303CSE+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX303CSE+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX303CSE+T?

MAX303CSE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX303CSE+T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX303CSE+T?

For technical support, including MAX303CSE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX303CSE+T requirements.

6.How does Aetrix verify that MAX303CSE+T is sourced from the original manufacturer or authorized distributors?

All MAX303CSE+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX303CSE+T meets industry standards.

7.What is the process for return or replacement of MAX303CSE+T?

All MAX303CSE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX303CSE+T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX303CSE+T part is unused and in its original packaging.

Return procedure for MAX303CSE+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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