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Analog Devices Inc./Maxim Integrated MAX4680CWE
- Part No.:
- MAX4680CWE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4680CWE.pdf
- Description:
- IC SW SPST-NCX2 1.25OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,001
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Product details
Overview
MAX4680CWE from Maxim Integrated is a dual SPST analog switch with two normally closed (NC) channels, designed for precision signal routing in rail-to-rail analog paths. It delivers 1.25Ω max on-resistance, 0.3Ω 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. It is used in data acquisition systems requiring low distortion and reed relay replacement.
For engineers reviewing the MAX4680CWE datasheet, MAX4680CWE pinout, MAX4680CWE application, or MAX4680CWE equivalent, key selection criteria include guaranteed NC configuration, break-before-make absence (distinguishing it from MAX4700), TTL/CMOS-compatible logic inputs via dedicated VL pin, and validated performance across industrial temperature range (0°C to +70°C) in 16-pin Wide SO package.
Technical Context
The MAX4680CWE implements CMOS-based dual SPST switching with independent control of two NC paths, each supporting rail-to-rail analog signals up to ±20V (dual supply) or 0V to +36V (single supply). Its architecture guarantees matched on-resistance (≤0.3Ω) and flat on-resistance (≤0.3Ω variation) over full signal range - critical for instrumentation-grade signal integrity.
It features separate VL logic supply pin enabling consistent TTL/CMOS input thresholds across full analog supply range, and integrates >2kV ESD protection per Method 3015.7. No break-before-make timing is specified, confirming its NC-only topology without guaranteed transition sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 1.25Ω max - ensures minimal voltage drop and power loss in high-current analog paths (±200mA continuous). |
| RON Match | 0.3Ω max difference between channels - enables precise channel-to-channel signal tracking in differential or multiplexed systems. |
| RON Flatness | 0.3Ω max variation over signal range - preserves linearity and THD in audio, sensor, and DAC/ADC interface applications. |
| Off-Leakage Current | 5nA max at +85°C - prevents signal corruption in high-impedance sample-and-hold or sensor front-end circuits. |
| Supply Range | +4.5V to +36V single or ±4.5V to ±20V dual - supports wide-input industrial, test, and telecom power architectures. |
| Logic Compatibility | TTL/CMOS via dedicated VL pin - decouples logic threshold from analog supply, ensuring reliable control under varying V+/V− conditions. |
| ESD Protection | >2kV per Method 3015.7 - enhances robustness in handling-sensitive lab and field-deployed equipment. |
Pinout & Package
MAX4680CWE is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant. Pin functions are validated per Maxim's official pin configuration diagram for MAX4680.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8, 10, 15 | No Connect (N.C.) | Not internally connected; tie to GND or low-impedance node to improve isolation performance. |
| 2, 7 | GND | Analog and digital ground reference; must be low-impedance return path for leakage and dynamic current. |
| 4 | V− | Negative analog supply input; connect to GND for single-supply operation. |
| 5 | COM1 | Common terminal for first NC switch; carries full analog signal current (±200mA). |
| 9, 16 | NC1, NC2 | Normally closed analog terminals; conduct to COM1/COM2 when IN1/IN2 = logic low. |
| 11, 14 | COM2 | Common terminal for second NC switch; electrically isolated from COM1. |
| 12 | VL | Dedicated logic supply input; sets input threshold independently of V+/V−, enabling mixed-voltage system interfacing. |
| 13 | V+ | Positive analog supply input; supports up to +36V, defining upper rail for rail-to-rail signal handling. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed NC configuration | Ensures fail-safe closed-path behavior at power-up or logic-low control - essential for safety-critical signal hold or default-on monitoring. |
| Rail-to-rail signal handling | Supports analog signals spanning full V− to V+ range without clipping - required for ±15V op-amp interfaces and unipolar 0–30V sensor outputs. |
| Low 1.25Ω on-resistance | Minimizes insertion loss and self-heating in 100mA+ signal paths, preserving accuracy in precision measurement front-ends. |
| 0.3Ω RON match & flatness | Enables sub-0.01% gain matching between channels - critical for dual-channel instrumentation amplifiers and synchronous sampling. |
| TTL/CMOS-compatible VL pin | Allows direct connection to 3.3V or 5V microcontroller GPIOs regardless of analog supply voltage - simplifies level-shifting in mixed-domain systems. |
Applications
| Reed Relay Replacement | Data Acquisition Systems |
|---|---|
|
Use Scenario: Replacing electromechanical relays in automated test fixtures where cycle life, speed, and size are constrained. IC Role / Device Role / Timing Role: Dual NC analog switch providing solid-state, bounce-free signal path closure with <400ns turn-on time. Use Value: Eliminates mechanical wear, reduces PCB area by >70%, and enables 100x faster switching versus typical reed relays. |
Use Scenario: Multiplexing multiple sensor outputs into a shared ADC channel in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch routing thermocouple or strain gauge signals while maintaining low THD and offset drift. Use Value: 1.25Ω on-resistance and 5nA leakage preserve µV-level resolution across 16-bit ADC inputs without calibration overhead. |
| Test Equipment Signal Routing | Communication System Line Interface |
|
Use Scenario: Configuring signal paths in benchtop multimeters or signal analyzers requiring low crosstalk and high off-isolation. IC Role / Device Role / Timing Role: Dual-channel analog switch isolating DUT connections during calibration sequences with −53dB off-isolation. Use Value: −65dB crosstalk between switches prevents coupling-induced measurement errors in multi-channel test head designs. |
Use Scenario: Protecting line drivers in PBX/PABX systems from transient overvoltage and enabling redundant path selection. IC Role / Device Role / Timing Role: NC-switched protection path that defaults closed during fault conditions or power loss. Use Value: Fail-safe NC behavior ensures continuity in voice/data lines during brownout or controller reset events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4690CWE | Two NO (normally open) switches instead of NC; identical RON, leakage, supply, and package specs. | Suitable where default-open behavior is required (e.g., safety interlocks, power-gated signal chains). | Select MAX4690CWE only if circuit requires open-at-reset behavior - not a drop-in replacement due to inverted logic function. |
| ADG1419BRUZ | Single-supply only (±15V max), 0.9Ω typical RON, no VL pin - logic tied to VDD; 16-TSSOP package (4.4mm width vs. 7.5mm SO). | Better for compact, single-rail systems; lacks dual-supply flexibility and NC guarantee of MAX4680CWE. | Choose ADG1419BRUZ for space-constrained 5V/12V systems where NC default is unnecessary and layout allows TSSOP footprint. |
Compared with MAX4690CWE and ADG1419BRUZ, the MAX4680CWE uniquely provides factory-guaranteed NC operation with dual-supply support and logic-level independence - making it the only choice for fail-safe, wide-rail, default-closed analog routing.
Availability
MAX4680CWE is available at Aetrix Electronics and suitable for reed relay replacement, data acquisition systems, test equipment signal routing, communication system line interface, and PBX/PABX applications requiring stable component supply across industrial temperature range (0°C to +70°C).
Supply support for MAX4680CWE 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 markets.
The MAX4680CWE belongs to Maxim's precision analog switch product line, engineered for low-distortion, rail-to-rail signal routing in automatic test equipment and high-reliability instrumentation where mechanical relay limitations must be overcome.
FAQ
What is the default switch state of MAX4680CWE at power-up?
The MAX4680CWE features two normally closed (NC) switches, meaning both paths are conductive (COM connected to NC) when IN1 and IN2 are at logic low or undefined. At power-up with un-driven control inputs, internal biasing and lack of pull-up/pull-down ensure NC closure - confirmed by truth table and functional diagram in the MAX4680 datasheet. This fail-safe behavior is intrinsic to the MAX4680CWE design and does not require external components.
Can MAX4680CWE operate from a single +12V supply?
Yes, MAX4680CWE supports single-supply operation from +4.5V to +36V. When using +12V, connect V− to GND, set VL to +3.3V or +5V for logic compatibility, and ensure IN1/IN2 swing meets TTL/CMOS thresholds. Electrical characteristics including 1.25Ω max RON and 5nA max off-leakage are fully specified and tested under +12V single-supply conditions per the datasheet's "Single Supply" section.
Does MAX4680CWE provide break-before-make switching?
No, MAX4680CWE does not provide guaranteed break-before-make switching. That feature is exclusive to the MAX4700 variant in the same family. The MAX4680CWE's NC topology means both switches transition simultaneously between closed and open states - verified by absence of tOPEN specification and truth table showing concurrent ON/OFF behavior. Use MAX4700CWE if break-before-make is required.
What is the maximum signal voltage range supported by MAX4680CWE?
MAX4680CWE supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings of −44V to +44V across V+ and V−. In dual-supply mode (e.g., ±15V), signals from −15V to +15V are fully supported. In single-supply mode (+36V/V− = GND), signals from 0V to +36V are handled. This range is guaranteed by design and validated in electrical characteristics tables for both dual and single-supply configurations.
Is MAX4680CWE pin-compatible with other variants like MAX4690CWE?
Yes, MAX4680CWE is pin-compatible with MAX4690CWE and MAX4700CWE in the same 16-pin Wide SO package - all share identical pinout, footprint, and thermal characteristics. However, logic function differs: MAX4680CWE is NC, MAX4690CWE is NO, and MAX4700CWE is mixed NC/NO with break-before-make. Swapping requires logic inversion and functional validation - not a drop-in replacement despite mechanical compatibility.
MAX4680CWE 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:
- 2
- On-State Resistance (Max):
- 1.25Ohm
- Channel-to-Channel Matching (ΔRon):
- 90mOhm
- 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:
- 55pC
- Channel Capacitance (CS(off), CD(off)):
- 115pF, 115pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -65dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4680CWE FAQ
1.How can I place an order for MAX4680CWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4680CWE 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 MAX4680CWE reliable?
The price and inventory of MAX4680CWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4680CWE is usually 5 days.
3.What payment methods are accepted for MAX4680CWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4680CWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4680CWE?
MAX4680CWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4680CWE 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 MAX4680CWE?
For technical support, including MAX4680CWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4680CWE requirements.
6.How does Aetrix verify that MAX4680CWE is sourced from the original manufacturer or authorized distributors?
All MAX4680CWE 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 MAX4680CWE meets industry standards.
7.What is the process for return or replacement of MAX4680CWE?
All MAX4680CWE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4680CWE, 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 MAX4680CWE part is unused and in its original packaging.
Return procedure for MAX4680CWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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