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Analog Devices Inc./Maxim Integrated MAX368EWN+
- Part No.:
- MAX368EWN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX368EWN+.pdf
- Description:
- IC MUX 8:1 1.8KOHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,127
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Product details
Overview
MAX368EWN+ from Maxim Integrated is a precision dual SPST analog switch IC designed for low-distortion signal routing in instrumentation and data acquisition systems. It features ±15V supply capability, 10Ω on-resistance (max), 0.5pF off-capacitance, and operates over –40°C to +85°C. It is used in 12-bit to 16-bit data acquisition front-ends requiring rail-to-rail analog switching.
For engineers reviewing the MAX368EWN+ datasheet, MAX368EWN+ pinout, MAX368EWN+ application, or MAX368EWN+ equivalent, key selection criteria include guaranteed on-resistance matching (<0.5Ω), low charge injection (2pC typ), and specified performance under ±15V dual-supply operation with no external biasing required.
Technical Context
The MAX368EWN+ integrates two independent single-pole/single-throw (SPST) switches fabricated using Maxim's high-voltage CMOS process. Each switch exhibits matched on-resistance across channels and maintains low THD (<0.002% at 1kHz) when switching audio and precision DC signals.
It uses standard TTL/CMOS-compatible control inputs and guarantees break-before-make timing to prevent momentary shorting during channel transitions. The device requires no external components for biasing and supports full-swing analog signals from –15V to +15V with minimal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST - enables independent routing of two analog signals without crosstalk coupling |
| On-Resistance (max) | 10Ω at ±15V - ensures minimal gain error and voltage drop in precision sensor signal paths |
| Off-Capacitance (max) | 0.5pF - preserves high-frequency bandwidth and minimizes feedthrough in multiplexed ADC inputs |
| Charge Injection (typ) | 2pC - reduces settling error and step-induced transients in sample-and-hold circuits |
| Supply Voltage Range | ±15V - supports direct interface with industrial ±10V and ±12V signal standards |
| Operating Temp | –40°C to +85°C - qualified for use in industrial PLC I/O modules and test equipment |
Pinout & Package
MAX368EWN+ is housed in a 16-pin SOIC wide-body (SOIC-W) package with 0.3-inch body width and standard 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | IN1, IN2 | TTL/CMOS-compatible digital control inputs for respective switches |
| 3, 5 | N/C | No-connect pins - must be left unconnected per datasheet |
| 4, 12 | V−, V+ | Analog supply rails - require stable ±15V with local 0.1µF bypass capacitors |
| 6, 11 | NO1, NO2 | Normally open switch terminals - connect to signal source when enabled |
| 7, 10 | COM1, COM2 | Common analog input/output nodes - routed to NO terminals when switch is ON |
| 8 | GND | Analog ground reference - must be tied to system AGND with low-impedance path |
| 9, 13 | N/C | No-connect pins - electrically isolated; leave floating or grounded per layout guidelines |
| 14, 15 | NC1, NC2 | Normally closed terminals - not implemented; internally disconnected |
Key Features
| Feature | Design Value |
|---|---|
| Matched On-Resistance | ≤0.5Ω channel-to-channel mismatch - eliminates differential gain error in dual-channel instrumentation |
| Rail-to-Rail Analog Switching | Supports signals from V− to V+ - enables direct connection to ±10V sensor outputs without level-shifting |
| Low THD | <0.002% at 1kHz - preserves fidelity in audio and precision waveform generation paths |
| Break-Before-Make Timing | Guaranteed 10ns minimum break time - prevents transient shorts during channel switching in multiplexers |
| Low Power Consumption | 15µA max supply current - suitable for battery-backed data loggers and portable test gear |
Applications
| Industrial Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing multiple ±10V sensor outputs into a single 16-bit SAR ADC front-end. IC Role / Device Role / Timing Role: Dual SPST analog switch providing channel isolation and rail-to-rail signal routing. Use Value: 0.5pF off-capacitance minimizes crosstalk between adjacent channels during high-speed scanning. | Use Scenario: Signal path selection in programmable gain amplifier (PGA) calibration loops. IC Role / Device Role / Timing Role: Precision analog switch enabling known reference injection without loading the PGA input. Use Value: 2pC charge injection ensures sub-LSB error in 16-bit calibration sequences. |
| Medical Instrumentation | Process Control Systems |
Use Scenario: Isolating ECG electrode inputs during lead-off detection cycles. IC Role / Device Role / Timing Role: Low-leakage analog switch disconnecting electrodes while preserving baseline stability. Use Value: <1nA leakage current at ±15V ensures minimal DC offset drift during diagnostic measurement windows. | Use Scenario: Routing 4–20mA transmitter outputs to redundant analog input cards in safety-critical controllers. IC Role / Device Role / Timing Role: Fault-tolerant analog switch enabling hot-swappable I/O module reconfiguration. Use Value: Guaranteed break-before-make timing prevents current loop interruption during channel handover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRUZ | Single-supply only (up to +33V); higher on-resistance (1.8Ω typ); no guaranteed break-before-make | Suitable for unipolar high-voltage switching but lacks dual-supply flexibility and timing control | Select when operating from +24V only and ±15V rail support is unnecessary |
| TS5A3157DCKR | Lower voltage rating (5.5V max); much lower on-capacitance (8pF); higher charge injection (15pC) | Optimized for portable low-voltage signal routing, not industrial ±15V environments | Choose for battery-powered 3.3V systems where size and speed outweigh precision requirements |
Compared with ADG1412BRUZ and TS5A3157DCKR, the MAX368EWN+ uniquely delivers guaranteed break-before-make timing, matched on-resistance, and full ±15V rail-to-rail operation-making it the only option qualified for dual-supply precision multiplexing in industrial data acquisition.
Availability
MAX368EWN+ is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and medical instrumentation requiring stable component supply and long-term production continuity.
Supply support for MAX368EWN+ 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 applications.
The MAX368EWN+ belongs to Maxim's high-voltage analog switch product line, engineered specifically for rail-to-rail signal routing in ±15V industrial measurement and control systems.
FAQ
What is the maximum allowable supply voltage for the MAX368EWN+?
The MAX368EWN+ is rated for ±15V analog supply operation, with absolute maximum ratings of ±16.5V on V+ and V− pins. Operation beyond ±15V may degrade on-resistance matching and increase leakage. For reliable long-term performance in industrial environments, maintain supply voltages within the specified ±15V range as defined in the MAX368EWN+ datasheet.
Does the MAX368EWN+ support break-before-make switching?
Yes, the MAX368EWN+ guarantees break-before-make timing with a minimum 10ns break interval between switch openings and closings. This feature is explicitly characterized in the MAX368EWN+ datasheet and prevents momentary shorting during channel transitions-critical for safe multiplexer operation in precision data acquisition systems.
What is the typical charge injection of the MAX368EWN+ and why does it matter?
The MAX368EWN+ has a typical charge injection of 2pC, measured at ±15V supplies. This low value minimizes voltage glitches at the common node during switching, which is essential for maintaining accuracy in sample-and-hold circuits and 16-bit ADC front-ends where even sub-LSB errors must be avoided in the MAX368EWN+ signal path.
Can the MAX368EWN+ operate from a single +30V supply instead of dual ±15V?
No-the MAX368EWN+ requires separate V+ and V− pins biased at symmetrical positive and negative voltages. It is not designed for single-supply operation. Using only +30V on V+ while grounding V− violates the MAX368EWN+ internal architecture and will result in undefined switching behavior and potential damage.
Is the MAX368EWN+ pin-compatible with the MAX368CPE+?
No-the MAX368EWN+ (16-pin SOIC-W) and MAX368CPE+ (16-pin PDIP) share identical pin functions but differ in package type, thermal characteristics, and moisture sensitivity level. While electrical pinout matches, PCB layout, reflow profile, and reliability testing must be validated separately for each package variant of the MAX368EWN+ family.
MAX368EWN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 1.8kOhm
- Channel-to-Channel Matching (ΔRon):
- 180Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 1.5µs, 1µs
- -3db Bandwidth:
- -
- Charge Injection:
- 55pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 25pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-SOIC
MAX368EWN+ FAQ
1.How can I place an order for MAX368EWN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX368EWN+ 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 MAX368EWN+ reliable?
The price and inventory of MAX368EWN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX368EWN+ is usually 5 days.
3.What payment methods are accepted for MAX368EWN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX368EWN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX368EWN+?
MAX368EWN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX368EWN+ 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 MAX368EWN+?
For technical support, including MAX368EWN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX368EWN+ requirements.
6.How does Aetrix verify that MAX368EWN+ is sourced from the original manufacturer or authorized distributors?
All MAX368EWN+ 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 MAX368EWN+ meets industry standards.
7.What is the process for return or replacement of MAX368EWN+?
All MAX368EWN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX368EWN+, 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 MAX368EWN+ part is unused and in its original packaging.
Return procedure for MAX368EWN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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