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Analog Devices Inc./Maxim Integrated MAX4661EWE
- Part No.:
- MAX4661EWE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4661EWE.pdf
- Description:
- IC SW SPST-NCX4 2.5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
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Product details
Overview
MAX4661EWE 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, enabling low-distortion switching in data acquisition and test equipment.
For engineers reviewing the MAX4661EWE datasheet, MAX4661EWE pinout, MAX4661EWE application, or MAX4661EWE equivalent, key selection criteria include guaranteed NC configuration, -40°C to +85°C industrial temperature rating, 16-pin Wide SO package, and dual ±4.5V to ±20V or single +4.5V to +36V supply operation.
Technical Context
The MAX4661EWE implements CMOS-based transmission-gate architecture with independent logic-level control inputs (IN1–IN4) referenced to VL, enabling TTL/CMOS compatibility across full supply ranges. Its internal charge-pump-free design ensures stable RON flatness (≤0.5Ω) over ±10V signal swing and supports break-before-make timing only in the MAX4663 variant-not applicable here.
All four switches share common analog supply rails (V+, V−) and ground (GND), with dedicated logic supply (VL) decoupled from analog supplies. The device operates without latch-up under specified absolute maximum ratings and integrates >2kV HBM ESD protection on all pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 2.5Ω max - ensures minimal voltage drop and signal attenuation in precision analog paths |
| RON Match | 0.5Ω max - enables matched gain/attenuation across channels in multi-path systems |
| RON Flatness | 0.5Ω max over ±10V - maintains consistent channel performance across full signal range |
| Off-Leakage Current | 5nA max at +85°C - preserves accuracy in high-impedance sample-and-hold or sensor interfaces |
| Supply Range | +4.5V to +36V single or ±4.5V to ±20V dual - supports wide industrial and avionics power architectures |
| Logic Compatibility | TTL/CMOS inputs with VL pin - allows independent logic voltage scaling without level shifters |
| ESD Protection | >2kV per Method 3015.7 - enhances robustness in handling and automated assembly |
Pinout & Package
MAX4661EWE is housed in a 16-pin Wide SO (SOIC-W) package with standard 0.3-inch body width and 1.27mm pitch. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Digital control inputs; logic low closes corresponding NC switch |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - connected to load or signal source |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - conduct to COM when IN = low |
| 4 | V− | Negative analog supply - tied to GND for single-supply operation |
| 5 | GND | Ground reference for analog and logic sections |
| 12 | VL | Logic supply input - sets input threshold and noise margin independently of V+/V− |
| 13 | V+ | Positive analog supply - defines upper rail for rail-to-rail signal handling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ without clipping - essential for ±15V instrumentation and audio routing |
| Low On-Resistance Flatness | ≤0.5Ω variation across ±10V - minimizes harmonic distortion in ADC front-ends and communication systems |
| Guaranteed NC Configuration | All four switches default closed at power-up or logic low - provides fail-safe signal continuity in safety-critical paths |
| Independent Logic Supply (VL) | Enables 3.3V or 5V control interfacing while operating from ±15V analog rails - eliminates level-shifter components |
| High Off-Isolation | -56dB typical at 1MHz - suppresses crosstalk between active and inactive channels in dense multiplexing |
Applications
| Reed Relay Replacement | Test Equipment Signal Routing |
|---|---|
|
Use Scenario: Replacing electromechanical relays in automated test fixtures where cycle life, speed, and size are critical. IC Role / Device Role / Timing Role: Quad NC analog switch providing solid-state, bounce-free switching with sub-500ns turn-on time. Use Value: Eliminates relay wear-out, reduces PCB area by >70%, and enables 100k+ cycles vs. mechanical relay lifetime limits. |
Use Scenario: Channel selection in ATE systems requiring low crosstalk and repeatable signal integrity across multiple DUTs. IC Role / Device Role / Timing Role: Precision analog multiplexer managing signal paths between instruments and device-under-test interfaces. Use Value: -56dB off-isolation and 0.5Ω RON match ensure measurement repeatability and minimize calibration drift. |
| Data Acquisition Front-End | Avionics Sensor Interface |
|
Use Scenario: Multiplexing multiple transducer outputs into a shared ADC channel in industrial monitoring systems. IC Role / Device Role / Timing Role: Low-leakage NC switch isolating unused sensors to prevent loading and offset errors. Use Value: 5nA max off-leakage at +85°C prevents DC error accumulation in high-impedance bridge or thermocouple circuits. |
Use Scenario: Signal conditioning and redundancy switching in flight control sensor networks operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-rated analog switch routing inertial or pressure sensor outputs to dual-redundant processing units. Use Value: Qualified for -40°C to +85°C operation with guaranteed RON flatness ensures consistent gain matching across environmental extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4662EWE | Four normally open (NO) configuration instead of NC; identical RON, leakage, and supply specs | Suitable where default-open state is required for safety or power-down isolation | Select MAX4662EWE if system requires open-circuit default behavior on power loss or logic low |
| ADG1414BRUZ | 4-channel NO switch with 1.8Ω max RON, ±15V supply, but no separate VL pin or guaranteed RON match spec | Better on-resistance but lacks NC functionality and tighter matching for precision gain-matched designs | Choose ADG1414BRUZ only when lower RON outweighs need for NC default and channel matching |
Compared with MAX4662EWE, the MAX4661EWE provides fail-safe continuity in fault conditions; compared with ADG1414BRUZ, it offers guaranteed NC behavior and superior channel-to-channel RON matching-critical for calibrated multiplexing and differential signal routing.
Availability
MAX4661EWE is available at Aetrix Electronics and suitable for reed relay replacement, test equipment signal routing, and data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4661EWE 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX4661 series belongs to Maxim's precision analog switch product line, engineered for low-distortion, rail-to-rail signal routing in automatic test equipment, data acquisition, and avionics systems where reliability and parameter matching are critical.
FAQ
What is the default switch state of the MAX4661EWE at power-up?
The MAX4661EWE features four normally closed (NC) switches, meaning each channel conducts between COM and NC terminals when its respective IN pin is at logic low (≤0.8V). At power-up with undefined logic states, external pull-down resistors are recommended to ensure predictable NC closure. The MAX4661EWE does not include internal pull-downs, so uncontrolled IN pins may float and cause unintended switching behavior.
Can the MAX4661EWE operate from a single 5V supply?
Yes, the MAX4661EWE supports single-supply operation from +4.5V to +36V. With V+ = +5V and V− tied to GND, it maintains rail-to-rail analog signal handling from 0V to +5V. However, RON increases slightly at lower voltages (typical 4Ω at +5V vs. 2.5Ω at +12V), and off-isolation degrades above 10MHz-verify performance in your specific signal chain using the single-supply electrical characteristics table in the MAX4661EWE datasheet.
Does the MAX4661EWE support break-before-make switching?
No, the MAX4661EWE does not provide guaranteed break-before-make (BBM) timing. BBM is exclusive to the MAX4663 variant, which integrates internal timing control to prevent momentary shorting during state transitions. The MAX4661EWE operates as independent SPST NC switches with typical tON/tOFF of 400ns/350ns-use external sequencing or FPGA-controlled delays if BBM is required in your design.
What is the purpose of the VL pin on the MAX4661EWE?
The VL pin on the MAX4661EWE sets the logic threshold reference independently of analog supplies, enabling TTL/CMOS-compatible control (0.8V low / 2.4V high) even when V+ and V− operate at ±15V. This eliminates level-shifters when interfacing with 3.3V or 5V microcontrollers. VL must be connected within (GND − 0.3V) to (V+ + 0.3V); floating VL may cause erratic switching or increased supply current in the MAX4661EWE.
How does temperature affect on-resistance in the MAX4661EWE?
On-resistance in the MAX4661EWE increases with temperature: typical RON rises from ~3Ω at -40°C to ~4.5Ω at +85°C under ±15V dual-supply conditions. The datasheet guarantees ≤2.5Ω max at +25°C and ≤3.5Ω max across -40°C to +85°C for V+ = +12V/V− = GND. For precision applications, use the RON vs. temperature curves (Figures MAX4661/2/3-02 and -04) to model gain error in calibrated systems using the MAX4661EWE.
MAX4661EWE 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4661EWE FAQ
1.How can I place an order for MAX4661EWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4661EWE 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 MAX4661EWE reliable?
The price and inventory of MAX4661EWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4661EWE is usually 5 days.
3.What payment methods are accepted for MAX4661EWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4661EWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4661EWE?
MAX4661EWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4661EWE 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 MAX4661EWE?
For technical support, including MAX4661EWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4661EWE requirements.
6.How does Aetrix verify that MAX4661EWE is sourced from the original manufacturer or authorized distributors?
All MAX4661EWE 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 MAX4661EWE meets industry standards.
7.What is the process for return or replacement of MAX4661EWE?
All MAX4661EWE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4661EWE, 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 MAX4661EWE part is unused and in its original packaging.
Return procedure for MAX4661EWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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