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Analog Devices Inc./Maxim Integrated MAX4661CWE
- Part No.:
- MAX4661CWE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4661CWE.pdf
- Description:
- IC SW SPST-NCX4 2.5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,811
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Product details
Overview
MAX4661CWE from Maxim Integrated is a quad SPST analog switch with four normally closed (NC) channels, designed for precision signal routing in rail-to-rail analog paths. It delivers 2.5Ω max on-resistance, 0.5Ω max RON match between channels, and 5nA max off-leakage at +85°C, operating from +4.5V to +36V single supply or ±4.5V to ±20V dual supplies - ideal for reed relay replacement in test equipment and data acquisition systems.
For engineers reviewing the MAX4661CWE datasheet, MAX4661CWE pinout, MAX4661CWE application, or MAX4661CWE equivalent, key selection criteria include guaranteed NC configuration, wide supply range compatibility, low charge injection (20pC typ), high off-isolation (–56dB typ), and TTL/CMOS-compatible logic inputs with separate VL pin.
Technical Context
The MAX4661CWE implements CMOS transmission-gate architecture with matched P- and N-channel devices per switch, enabling rail-to-rail analog signal handling across its full ±10V input range. Its break-before-make behavior is not guaranteed - unlike the MAX4663 - as it is strictly NC-configured with simultaneous channel switching under logic control.
It features independent logic supply (VL) referenced to GND, decoupling digital interface voltage from analog supply rails (V+, V−), ensuring robust noise immunity and consistent switching thresholds across temperature (0°C to +70°C) and supply variations. Internal ESD protection exceeds 2kV per Method 3015.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 2.5Ω max - ensures minimal signal attenuation and voltage drop in low-level analog paths (e.g., sensor front-ends). |
| RON match | 0.5Ω max - enables precise gain matching in multi-channel instrumentation amplifiers or differential signal routing. |
| Off-leakage current | 5nA max at +85°C - preserves accuracy in high-impedance sample-and-hold or ADC input conditioning circuits. |
| Supply range | +4.5V to +36V single or ±4.5V to ±20V dual - supports industrial, avionics, and test equipment power architectures without level-shifting. |
| Logic compatibility | TTL/CMOS inputs with dedicated VL pin - allows direct interfacing to 3.3V or 5V microcontrollers while analog rails operate at ±15V. |
| Charge injection | 20pC typ - limits voltage glitch on sampled nodes, critical for 12-bit+ data acquisition system integrity. |
| Off-isolation | –56dB typ at 1MHz - suppresses crosstalk between inactive channels in dense multiplexed signal systems. |
Pinout & Package
MAX4661CWE is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant, with exposed pad option not specified. Pin 1 marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Digital control inputs: active-low logic turns ON NC path (i.e., IN = 0 → COM–NC closed). |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - connect to signal source or load; bidirectional current path. |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - shorted to respective COM when IN = 0; open when IN = 1. |
| 4 | V− | Negative analog supply - tie to GND for single-supply operation; must be ≤ V+ − 44V. |
| 5 | GND | Ground reference for logic and substrate - requires low-impedance connection to minimize noise coupling. |
| 12 | VL | Logic supply input - sets logic threshold (0.8V/2.4V) independently of analog rails; connect to 3.3V or 5V. |
| 13 | V+ | Positive analog supply - defines upper rail for rail-to-rail signal swing; supports up to +36V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping - essential for ±10V sensor interfaces and audio routing. |
| Guaranteed NC configuration | All four switches default closed at power-up or logic low - eliminates need for external pull-downs in fail-safe systems. |
| Low RON flatness (0.5Ω max) | Ensures consistent gain and linearity across full signal range (±10V), critical for precision measurement applications. |
| 2kV ESD protection | Meets Method 3015.7 - reduces field failure risk during board handling and system integration in automated test environments. |
| Separate VL pin | Decouples logic interface voltage from analog supply rails - prevents supply interaction and enables mixed-voltage system design. |
Applications
| Reed Relay Replacement | Test Equipment Signal Routing |
|---|---|
|
Use Scenario: Replacing electromechanical relays in automated test fixtures where cycle life, speed, and size are constrained. IC Role / Device Role / Timing Role: Quad NC analog switch providing solid-state, bounce-free switching of DC–100kHz signals with <500ns turn-on time. Use Value: Eliminates relay wear-out, reduces PCB area by >70%, and cuts power consumption from watts to milliwatts per channel. |
Use Scenario: Multiplexing stimulus signals between DUT ports and measurement instruments in ATE platforms. IC Role / Device Role / Timing Role: Low-RON, matched-channel switch enabling calibrated signal path selection without gain error compensation. Use Value: Maintains signal fidelity across 16-channel scan cards with <0.5Ω inter-channel RON mismatch and <5nA leakage at 85°C. |
| Data Acquisition Front-End | Avionics Sensor Interface |
|
Use Scenario: Channel selection ahead of a precision SAR ADC in environmental monitoring systems. IC Role / Device Role / Timing Role: NC-configured switch isolating unused sensor inputs to prevent loading and leakage-induced offset drift. Use Value: 5nA max off-leakage and 20pC charge injection preserve 16-bit effective resolution in 100ksps sampling systems. |
Use Scenario: Routing analog outputs from redundant flight sensors (e.g., air data computers) to central processing units. IC Role / Device Role / Timing Role: Fail-safe NC switch ensuring default signal continuity during power loss or controller reset. Use Value: Guaranteed NC state at power-up meets DO-254 safety requirements without external supervision circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4662CWE | Four normally open (NO) configuration instead of NC; identical RON, leakage, and supply specs. | Suitable where default-open safety state is required (e.g., power-off isolation of hazardous signals). | Select MAX4662CWE only if fail-open behavior is mandated; not drop-in replaceable due to inverted logic function. |
| ADG1414BRUZ | Quad SPST, NO, 1.8Ω max RON, but requires dual supply only; no VL pin; –40°C to +125°C rating. | Better RON and extended temp range, but lacks single-supply flexibility and logic supply independence. | Choose ADG1414BRUZ for high-temp industrial use where lower on-resistance outweighs single-supply need and VL decoupling. |
Compared with MAX4662CWE, the MAX4661CWE provides inherent fail-safe continuity; compared with ADG1414BRUZ, it offers wider supply adaptability and logic/analog supply separation - critical for mixed-signal embedded systems requiring robustness across voltage domains.
Availability
MAX4661CWE is available at Aetrix Electronics and suitable for reed relay replacement, test equipment signal routing, and data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed 0°C to +70°C performance.
Supply support for MAX4661CWE 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 industrial, automotive, and communications markets.
The MAX4661 series belongs to Maxim's high-voltage analog switch product line, engineered specifically for reliable, low-distortion signal routing in automatic test equipment and safety-critical sensor interfaces.
FAQ
What is the logic polarity of the MAX4661CWE control inputs?
The MAX4661CWE uses active-low logic: when INx = 0V (or ≤0.8V), the corresponding COMx–NCx switch closes; when INx = 2.4V or higher, the switch opens. This NC behavior is intrinsic to the MAX4661CWE die design and cannot be inverted via external configuration. All four channels follow this same polarity.
Can the MAX4661CWE operate from a single 5V supply?
Yes - the MAX4661CWE supports single-supply operation from +4.5V to +36V. With V+ = +5V and V− tied to GND, it maintains 2.5Ω max RON and rail-to-rail signal handling from 0V to +5V. Logic inputs remain compatible via VL pin, which may be tied to +3.3V or +5V independently.
Does the MAX4661CWE support break-before-make switching?
No - break-before-make timing is guaranteed only for the MAX4663 variant. The MAX4661CWE is a purely normally closed device with simultaneous switching; it does not incorporate internal timing circuitry to enforce channel separation during transition. Designers must manage potential transient overlap externally if required.
What is the maximum continuous current per switch in the MAX4661CWE?
The MAX4661CWE supports ±200mA continuous current through each COM/NC path, verified across its full operating temperature range. This rating assumes proper PCB copper pour and thermal relief; derating applies above +70°C ambient per the Wide SO package's 9.52mW/°C thermal resistance.
How is the VL pin used in the MAX4661CWE?
The VL pin on the MAX4661CWE sets the logic threshold voltage independently of V+ and V−, allowing TTL/CMOS-compatible control even when analog supplies operate at ±15V. It must be connected to a stable 3.3V or 5V source - floating VL will cause undefined switching behavior and is not permitted in production designs.
MAX4661CWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 275ns, 175ns
- -3db Bandwidth:
- -
- Charge Injection:
- 300pC
- Channel Capacitance (CS(off), CD(off)):
- 55pF, 55pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -59dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4661CWE FAQ
1.How can I place an order for MAX4661CWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4661CWE 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 MAX4661CWE reliable?
The price and inventory of MAX4661CWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4661CWE is usually 5 days.
3.What payment methods are accepted for MAX4661CWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4661CWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4661CWE?
MAX4661CWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4661CWE 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 MAX4661CWE?
For technical support, including MAX4661CWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4661CWE requirements.
6.How does Aetrix verify that MAX4661CWE is sourced from the original manufacturer or authorized distributors?
All MAX4661CWE 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 MAX4661CWE meets industry standards.
7.What is the process for return or replacement of MAX4661CWE?
All MAX4661CWE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4661CWE, 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 MAX4661CWE part is unused and in its original packaging.
Return procedure for MAX4661CWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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