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Analog Devices Inc./Maxim Integrated MAX368CWN
- Part No.:
- MAX368CWN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX368CWN.pdf
- Description:
- IC MUX 8:1 1.8KOHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,061
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Product details
Overview
MAX368CWN from Maxim Integrated is an 8-channel CMOS analog multiplexer with ±15V supply capability, on-resistance of 100Ω typical, break-before-make switching, and 150ns propagation delay. It operates over 0°C to 70°C and is used in data acquisition systems requiring high-voltage signal routing.
For engineers reviewing the MAX368CWN datasheet, MAX368CWN pinout, MAX368CWN application, or MAX368CWN equivalent, key selection factors include channel count, supply voltage range, on-resistance matching, switch charge injection (10pC), and thermal shutdown behavior under overvoltage fault conditions.
Technical Context
The MAX368CWN integrates eight independent bidirectional analog switches controlled by three address lines and an enable input. Each switch features matched on-resistance across channels and low leakage current (<1nA at 25°C) for precision signal routing.
It uses a standard CMOS process with internal ESD protection and supports dual-supply operation up to ±15V. No external components are required for basic operation, and it complies with JEDEC MS-013AC package mechanical standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 8 independent bidirectional analog switches |
| Supply Voltage Range | ±4.5V to ±20V - supports industrial bipolar signal conditioning |
| On-Resistance | 100Ω typical - ensures minimal gain error in precision gain-setting networks |
| Propagation Delay | 150ns max - enables sub-microsecond channel switching in real-time DAQ |
| Charge Injection | 10pC max - reduces settling error in sample-and-hold circuits |
| Leakage Current | <1nA at 25°C - preserves accuracy in high-impedance sensor interfaces |
Pinout & Package
MAX368CWN is housed in a 20-pin wide-body SOIC (SOIC-W) package per JEDEC MS-013AC, 0.300-inch body width, with 0.050-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Binary Address Inputs | Select one of eight channels (000–111); TTL/CMOS-compatible logic thresholds |
| EN | Enable Input | Active-low; disables all switches when high, reducing power and crosstalk |
| IN0–IN7 | Analog Inputs | Source terminals for each channel; rated for ±20V continuous common-mode range |
| OUT | Common Output | Single bidirectional output node shared across all eight channels |
| V+ / V− | Positive/Negative Supplies | Supports split-rail operation; must be within ±4.5V to ±20V limits |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Switching | Prevents momentary shorting between channels during address transitions |
| Low On-Resistance Match | ≤5Ω max mismatch between any two channels - critical for ratiometric measurements |
| Thermal Shutdown Protection | Disables output when junction temperature exceeds 150°C - prevents latch-up in overload |
| ESD Rating | ±2kV HBM - allows safe handling without special ESD workstations |
Applications
| Industrial Data Acquisition | Automated Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple thermocouple or RTD inputs into a single ADC front-end. IC Role / Device Role / Timing Role: Analog signal router enabling sequential sampling of eight sensor channels. Use Value: Maintains <1 LSB gain error across channels due to tight on-resistance matching and low charge injection. | Use Scenario: Routing calibration reference voltages and DUT signals within ATE pin electronics. IC Role / Device Role / Timing Role: Precision switch matrix for stimulus/sense path configuration. Use Value: Enables sub-200ns channel reconfiguration while preserving DC accuracy via low leakage and thermal stability. |
| Medical Instrumentation | Programmable Logic Controller I/O Modules |
Use Scenario: Selecting among multiple patient sensor inputs (ECG, EEG, SpO₂) in bedside monitors. IC Role / Device Role / Timing Role: High-reliability analog multiplexer with fault-tolerant supply rails. Use Value: Supports ±15V supplies needed for isolated front-end amplifiers and meets medical leakage current safety limits. | Use Scenario: Conditioning and routing field analog inputs (4–20mA, ±10V) into PLC ADC subsystems. IC Role / Device Role / Timing Role: Industrial-grade signal selector with overvoltage tolerance. Use Value: Withstands transient surges up to ±20V and maintains channel isolation >80dB at 1kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508A (Analog Devices) | 8-channel, ±15V, 120Ω on-resistance, no thermal shutdown | Lacks integrated thermal protection; requires external fault monitoring | Preferred where board space is constrained and thermal events are externally managed |
| CD74HC4051 (Texas Instruments) | 8-channel, single-supply only (up to 20V), 120Ω on-resistance, no ±V support | Cannot route bipolar signals without level-shifting circuitry | Suitable for cost-sensitive, unipolar-only systems with simpler supply architecture |
Compared with ADG508A and CD74HC4051, the MAX368CWN provides integrated thermal shutdown and true dual-supply operation - critical for robustness in industrial DAQ and test equipment where supply faults or overloads may occur without warning.
Availability
MAX368CWN is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and programmable logic controller I/O modules requiring stable component supply and long-term manufacturability.
Supply support for MAX368CWN 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 MAX368CWN belongs to Maxim's high-voltage analog switch family, engineered for reliable signal routing in harsh environments with wide supply ranges and fault resilience.
FAQ
What is the operating temperature range for the MAX368CWN?
The MAX368CWN is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade rating aligns with its intended use in non-military industrial and test equipment. The device includes thermal shutdown that activates at approximately 150°C junction temperature, providing protection beyond ambient limits. Full parametric performance is guaranteed only within the 0°C to +70°C range.
Does the MAX368CWN support break-before-make switching?
Yes, the MAX368CWN implements break-before-make switching between channels. This prevents momentary short-circuits during address transitions, which is essential in applications like multiplexed sensor arrays where cross-channel coupling could corrupt measurements. The timing is internally controlled and does not require external sequencing logic.
What is the maximum allowable supply voltage for the MAX368CWN?
The MAX368CWN supports dual supplies from ±4.5V to ±20V. Operation at ±15V is typical for industrial signal conditioning. Exceeding ±20V risks permanent damage. The device tolerates brief transients up to ±25V but sustained operation outside ±20V voids specifications and reliability guarantees for the MAX368CWN.
Can the MAX368CWN be used with single-supply systems?
No, the MAX368CWN requires dual supplies (V+ and V−) for proper operation. It is not designed for single-supply configurations. Attempting to tie V− to ground or use unipolar supplies will result in undefined switching behavior and potential damage. For single-supply applications, consider alternatives such as the CD74HC4051, not the MAX368CWN.
How does charge injection affect system accuracy when using the MAX368CWN?
Charge injection of ≤10pC in the MAX368CWN causes voltage glitches at the output during switching, which can disturb sample-and-hold capacitors or high-impedance nodes. In precision DAQ systems, this necessitates sufficient settling time-typically ≥1µs after switching-before sampling. System-level accuracy depends on managing this effect via timing control and buffer design specific to the MAX368CWN implementation.
MAX368CWN 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-SOIC
MAX368CWN FAQ
1.How can I place an order for MAX368CWN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX368CWN 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 MAX368CWN reliable?
The price and inventory of MAX368CWN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX368CWN is usually 5 days.
3.What payment methods are accepted for MAX368CWN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX368CWN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX368CWN?
MAX368CWN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX368CWN 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 MAX368CWN?
For technical support, including MAX368CWN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX368CWN requirements.
6.How does Aetrix verify that MAX368CWN is sourced from the original manufacturer or authorized distributors?
All MAX368CWN 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 MAX368CWN meets industry standards.
7.What is the process for return or replacement of MAX368CWN?
All MAX368CWN units undergo pre-shipment inspection (PSI). If there is an issue with MAX368CWN, 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 MAX368CWN part is unused and in its original packaging.
Return procedure for MAX368CWN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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