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Analog Devices Inc./Maxim Integrated MAX4661CAE
- Part No.:
- MAX4661CAE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX4661CAE.pdf
- Description:
- IC SW SPST-NCX4 2.5OHM 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,056
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Product details
Overview
MAX4661CAE from Maxim Integrated is a quad SPST analog switch with four normally closed (NC) channels, 2.5Ω max on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling - used in precision data acquisition and reed-relay replacement where low distortion and leakage <5nA at +85°C are critical.
For engineers reviewing the MAX4661CAE datasheet, MAX4661CAE pinout, MAX4661CAE application, or MAX4661CAE equivalent, this page delivers verified electrical specs, terminal roles, real-world use cases in test equipment and audio routing, and two validated alternative parts with documented functional differences.
Technical Context
The MAX4661CAE implements CMOS-based transmission-gate architecture with independent logic-level control inputs (IN1–IN4), each driving one NC switch (NC1–NC4) tied to its respective COMx terminal. Its RON flatness of ≤0.5Ω over ±10V signal range and matched channel RON (≤0.5Ω max difference) ensure minimal gain/phase error in multiplexed signal paths.
It features separate VL pin for TTL/CMOS-compatible logic supply (2.4V high / 0.8V low thresholds), enabling robust interface across full analog supply range. Off-isolation exceeds –56dB at 1MHz and charge injection is limited to 300pC (typ), supporting accurate sample-and-hold and ADC front-end switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 2.5Ω max - ensures minimal voltage drop and power loss in signal paths up to ±10V analog swing |
| RON Match | 0.5Ω max between channels - preserves amplitude balance in multi-channel instrumentation |
| RON Flatness | 0.5Ω max over ±10V - maintains consistent gain across full input signal range |
| Off-Leakage Current | 5nA max at +85°C - prevents DC error accumulation in high-impedance sensor or integrator circuits |
| Supply Range | +4.5V to +36V single or ±4.5V to ±20V dual - supports industrial, avionics, and wide-range test equipment rails |
| Logic Compatibility | TTL/CMOS via dedicated VL pin - eliminates level-shifter need across full analog supply range |
| ESD Protection | >2kV per Method 3015.7 - enhances reliability in handling-sensitive lab and field environments |
Pinout & Package
MAX4661CAE is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, 5.0mm × 6.2mm body size, and exposed pad not present - suitable for automated SMT assembly and moderate-power analog routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Digital control inputs: logic low closes corresponding NC switch; inverted logic sense vs. MAX4662 |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - connected to load or signal path; bidirectional current handling (±200mA continuous) |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - shorted to COM when INx = low; open when INx = high |
| 4 | V− | Negative analog supply - connect to GND for single-supply operation; absolute max −44V relative to GND |
| 5 | GND | Ground reference for logic and substrate - must be low-impedance return path for leakage and switching currents |
| 12 | VL | Logic supply input - accepts 2.4V/0.8V TTL thresholds independent of V+/V−; decoupling recommended |
| 13 | V+ | Positive analog supply - supports up to +44V absolute max; powers internal switch driver and protection circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ without clipping - enables direct interfacing with op-amps and ADCs operating at supply rails |
| Guaranteed RON Match | ≤0.5Ω max mismatch between any two switches - critical for channel-to-channel matching in differential or multi-path systems |
| Low Charge Injection | 300pC max - minimizes voltage glitch on sampled nodes in precision hold circuits and multiplexed ADC inputs |
| Break-Before-Make Exclusion | Not implemented - MAX4661CAE is NC-only; avoids unintended shorting during transition but lacks guaranteed break-before-make timing |
| High Off-Isolation | −56dB min at 1MHz - suppresses crosstalk between active and inactive channels in dense signal routing |
Applications
| Reed Relay Replacement | Test Equipment Signal Routing |
|---|---|
|
Use Scenario: Replacing electromechanical relays in automated test fixtures requiring >1M cycle life and sub-ms switching. IC Role / Device Role / Timing Role: Quad NC switch providing fail-safe closed-path default state; driven by microcontroller GPIOs. Use Value: Eliminates relay bounce, wear-out, and coil drive complexity while maintaining <5nA leakage and 2.5Ω path resistance. |
Use Scenario: Multiplexing multiple sensor outputs into a shared ADC channel in benchtop DMM or PXI modules. IC Role / Device Role / Timing Role: Low-distortion analog switch array selecting one of four inputs; controlled via isolated digital lines. Use Value: Enables 0.01% gain accuracy across channels due to ≤0.5Ω RON match and rail-to-rail support up to ±15V. |
| Avionics Sensor Interface | Audio-Signal Routing |
|
Use Scenario: Conditioning and selecting redundant temperature or pressure transducer signals in flight control subsystems. IC Role / Device Role / Timing Role: Fault-tolerant NC switch ensuring default connection to primary sensor unless overridden by health monitor logic. Use Value: Meets DO-160 ESD requirements (>2kV) and operates reliably from −40°C to +85°C with <5nA leakage at temp extremes. |
Use Scenario: Programmable analog patchbay in professional audio mixers routing line-level signals between channels and effects loops. IC Role / Device Role / Timing Role: Quad SPST switch enabling silent, pop-free channel muting and routing under microcontroller control. Use Value: Delivers <−90dB THD+N at 1kHz due to low RON flatness and 85pF off-capacitance minimizing high-frequency roll-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4662CAE | Four normally open (NO) configuration instead of NC; identical RON, supply, and leakage specs | Suitable where default-open safety state is required (e.g., power-down isolation) | Select MAX4662CAE when system requires de-energized default; MAX4661CAE remains preferred for fail-safe closed paths |
| ADG1414BRUZ | 4-channel, NO/NC configurable via EN pin; 1.8Ω max RON; supports only ±15V dual or +12V single supply | Lacks guaranteed RON match spec (only typical 0.3Ω); no break-before-make guarantee even in mixed mode | Choose ADG1414BRUZ only if lower RON justifies narrower supply range and relaxed matching tolerance |
Compared with MAX4661CAE, MAX4662CAE provides identical performance in an NO configuration for safety-critical open-default systems, while ADG1414BRUZ offers lower on-resistance but sacrifices guaranteed matching and wider supply flexibility - making MAX4661CAE optimal for precision NC routing where channel consistency and rail versatility are mandatory.
Availability
MAX4661CAE is available at Aetrix Electronics and suitable for reed relay replacement, test equipment signal routing, and avionics sensor interface requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4661CAE 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 MAX4661CAE belongs to Maxim's high-voltage analog switch family engineered for low-distortion, rail-to-rail signal routing in automatic test equipment and mission-critical sensor interfaces.
FAQ
What is the maximum allowable voltage between V+ and V− for MAX4661CAE?
The absolute maximum voltage difference between V+ and V− is +44V. This rating applies regardless of whether the device is operated in single-supply (V− = GND) or dual-supply mode. Exceeding this limit risks permanent damage, and proper sequencing - V+ first, then V−, then logic inputs - is required to avoid overstress during power-up.
Does MAX4661CAE support rail-to-rail analog signals with single-supply operation?
Yes, MAX4661CAE supports rail-to-rail analog signals from GND to V+ when operated in single-supply mode (V− tied to GND). Its transmission-gate design allows full-swing signal passage without clipping, provided the input does not exceed V+ or fall below GND - confirmed by the "Input Voltage Range" specification listing VCOM_, VNO_, VNC_ from GND to V+.
What is the function of the VL pin on MAX4661CAE, and can it be tied to V+?
The VL pin supplies the logic interface circuitry and sets TTL/CMOS input thresholds (VIN_H = 2.4V, VIN_L = 0.8V). It must be connected to a stable 2.4V–5.5V source - not directly to V+, which may exceed 5.5V in dual-supply operation. Tying VL to V+ risks violating the absolute max rating and causing logic malfunction or damage.
How does the normally closed (NC) behavior of MAX4661CAE affect system safety design?
MAX4661CAE defaults to closed (NC) paths when all INx pins are low, making it inherently fail-safe for applications like emergency sensor monitoring or backup signal paths. If control power fails or MCU resets, the switches remain conductive - preserving signal continuity unlike NO devices that would open and interrupt flow.
Is MAX4661CAE pin-compatible with MAX4663CAE?
No, MAX4661CAE is not pin-compatible with MAX4663CAE. Although both use the same 16-pin SSOP package, their pin functions differ: MAX4661CAE assigns pins 3/6/11/14 exclusively to NC terminals, while MAX4663CAE uses those pins for mixed NC/NO assignments (e.g., pins 14/11 = NC, pins 3/6 = NO) and adds guaranteed break-before-make timing - requiring PCB layout changes for substitution.
MAX4661CAE 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-SSOP
MAX4661CAE FAQ
1.How can I place an order for MAX4661CAE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4661CAE 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 MAX4661CAE reliable?
The price and inventory of MAX4661CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4661CAE is usually 5 days.
3.What payment methods are accepted for MAX4661CAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4661CAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4661CAE?
MAX4661CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4661CAE 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 MAX4661CAE?
For technical support, including MAX4661CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4661CAE requirements.
6.How does Aetrix verify that MAX4661CAE is sourced from the original manufacturer or authorized distributors?
All MAX4661CAE 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 MAX4661CAE meets industry standards.
7.What is the process for return or replacement of MAX4661CAE?
All MAX4661CAE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4661CAE, 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 MAX4661CAE part is unused and in its original packaging.
Return procedure for MAX4661CAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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