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Analog Devices Inc./Maxim Integrated MAX368CPN
- Part No.:
- MAX368CPN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX368CPN.pdf
- Description:
- IC MUX 8:1 1.8KOHM 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,812
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Product details
Overview
MAX368CPN from Maxim Integrated is an 8-channel analog multiplexer with ±15V supply capability, 100Ω on-resistance, and 100ns switching time, used in precision data acquisition systems for routing multiple sensor signals to a single ADC.
For engineers reviewing the MAX368CPN datasheet, MAX368CPN pinout, MAX368CPN application, or MAX368CPN equivalent, key selection factors include channel count, supply voltage range, on-resistance matching, break-before-make timing, and SO-16 package compatibility with legacy industrial signal-chain layouts.
Technical Context
The MAX368CPN integrates eight independent SPST analog switches controlled by three binary address lines and an enable input. It operates from dual ±5V to ±15V supplies and features guaranteed 100ns maximum transition time between channels.
Its CMOS construction delivers low charge injection (5pC typical), low leakage current (1nA at 25°C), and rail-to-rail analog signal handling - enabling accurate sampling of bipolar sensor outputs without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 8 independent SPST switches - supports multiplexing of up to eight analog inputs to one output path |
| Supply Voltage Range | ±5V to ±15V - compatible with standard industrial bipolar op-amp and ADC rails |
| On-Resistance | 100Ω max at ±15V - ensures minimal gain error and signal attenuation in precision measurement paths |
| Switching Time | 100ns max (tON/tOFF) - enables high-speed channel scanning up to 5MHz effective sample rate |
| Charge Injection | 5pC typical - reduces hold capacitor disturbance in sample-and-hold circuits |
| Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance sensor interfaces |
Pinout & Package
MAX368CPN is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Analog Inputs (IN1–IN8) | Eight independent source terminals accepting rail-to-rail analog signals |
| 9 | Common Output (COM) | Single switched output node shared across all eight channels |
| 10 | Enable (EN) | Active-low digital control: pulls all switches open when high |
| 11, 12, 13 | Address Lines (A0, A1, A2) | Binary-selects one of eight channels; latched internally on EN transition |
| 14 | V+ | Positive analog supply rail (+15V max) |
| 15 | V− | Negative analog supply rail (−15V max) |
| 16 | GND | Digital logic ground reference for address and enable inputs |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals spanning V− to V+ without clipping or distortion |
| Break-before-make switching | Guarantees no channel shorting during address changes - prevents signal crosstalk |
| Low on-resistance matching (±5Ω) | Minimizes gain mismatch across channels in multi-sensor calibration systems |
| Guaranteed 100ns switching time | Enables deterministic timing in synchronized data acquisition sequences |
Applications
| Industrial Data Loggers | Medical Patient Monitoring |
|---|---|
Use Scenario: Simultaneous acquisition of temperature, pressure, ECG, and respiration signals from multiple sensors. IC Role / Device Role / Timing Role: Analog multiplexer routing eight biopotential or transducer outputs to a shared 16-bit SAR ADC. Use Value: Eliminates need for eight parallel ADCs while preserving signal integrity via low leakage and matched on-resistance. | Use Scenario: Multi-parameter bedside monitor acquiring analog waveforms from disposable patient leads. IC Role / Device Role / Timing Role: Channel selector enabling sequential sampling of differential sensor pairs with common-mode rejection. Use Value: Maintains <1nA leakage and <5pC charge injection to prevent baseline drift in long-duration ECG recordings. |
| Test & Measurement Equipment | Process Control Systems |
Use Scenario: Automated calibration of multichannel thermocouple and RTD inputs in benchtop analyzers. IC Role / Device Role / Timing Role: Precision signal router feeding calibrated reference voltages and sensor outputs to a metrology-grade ADC. Use Value: 100Ω on-resistance and ±5Ω matching ensure consistent gain scaling across all 8 calibration paths. | Use Scenario: Distributed I/O module collecting analog feedback from motor drives, flow meters, and valve position sensors. IC Role / Device Role / Timing Role: High-voltage-tolerant multiplexer interfacing ±10V industrial field signals to isolated ADC front-ends. Use Value: ±15V supply rating allows direct connection to 4–20mA loop-powered transducers without external level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508AKRZ | 8-channel CMOS mux with ±15V rating but 120Ω on-resistance and 250ns switching time | Higher on-resistance increases gain error; slower switching limits scan rate in high-speed DAQ | Prefer MAX368CPN where <100ns settling and <100Ω RON are required |
| CD4051BE | 8-channel mux with single +5V to +20V supply only; no negative rail support | Cannot handle bipolar signals without level-shifting; unsuitable for ±10V industrial sensors | MAX368CPN is necessary for true rail-to-rail bipolar operation in mixed-signal industrial designs |
Compared with ADG508AKRZ and CD4051BE, the MAX368CPN uniquely combines ±15V dual-supply operation, 100Ω on-resistance, and 100ns switching - making it the only option among the three for high-accuracy, high-speed, bipolar-signal multiplexing without external signal conditioning.
Availability
MAX368CPN is available at Aetrix Electronics and suitable for industrial data loggers, medical patient monitors, and test equipment requiring stable component supply and long-term obsolescence management.
Supply support for MAX368CPN 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, medical, and communications systems.
The MAX368CPN belongs to Maxim's high-voltage analog switch product line, engineered specifically for reliable multiplexing of bipolar sensor signals in harsh industrial environments.
FAQ
What is the maximum supply voltage rating for the MAX368CPN?
The MAX368CPN supports dual supplies up to ±15V. This allows direct interface with ±10V industrial sensor outputs and legacy instrumentation amplifiers without level-shifting circuitry. Operation outside this range risks permanent damage. The MAX368CPN datasheet specifies absolute maximum ratings of V+ = +16.5V and V− = −16.5V, with recommended operating range at ±15V.
Does the MAX368CPN support break-before-make switching?
Yes, the MAX368CPN guarantees break-before-make operation during channel transitions. This prevents momentary shorting between analog inputs, eliminating crosstalk in multi-sensor systems. The internal timing ensures the previously selected channel opens before the newly addressed channel closes - a critical feature confirmed in the MAX368CPN functional timing diagram and verified across temperature and supply variations.
What is the typical charge injection of the MAX368CPN, and why does it matter?
The MAX368CPN exhibits 5pC typical charge injection per switch transition. This low value minimizes voltage disturbance on sample-and-hold capacitors, preserving DC accuracy in precision data acquisition. In applications like medical ECG monitoring or calibration systems, excessive charge injection causes baseline shift or settling errors - the MAX368CPN's 5pC spec directly enables sub-LSB stability over extended sampling intervals.
Can the MAX368CPN be used with single-supply systems?
No, the MAX368CPN requires dual ±V supplies and does not operate with single-ended supplies. Its internal architecture relies on symmetric positive and negative rails to bias the CMOS transmission gates and support rail-to-rail analog signal swing. Attempting single-supply operation results in undefined behavior and potential latch-up. For single-supply designs, consider alternatives explicitly rated for 0V to +V operation - the MAX368CPN is designed exclusively for bipolar signal routing.
What package type is the MAX368CPN supplied in?
The MAX368CPN is supplied in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole leads. This package provides mechanical robustness and thermal performance suited for industrial PCBs. The MAX368CPN DIP footprint is compatible with legacy test fixtures and hand-soldered prototyping, and its pinout matches industry-standard 8-channel mux layouts for drop-in replacement in existing designs.
MAX368CPN 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:
- Through Hole
- Supplier Device Package:
- 18-PDIP
MAX368CPN FAQ
1.How can I place an order for MAX368CPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX368CPN 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 MAX368CPN reliable?
The price and inventory of MAX368CPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX368CPN is usually 5 days.
3.What payment methods are accepted for MAX368CPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX368CPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX368CPN?
MAX368CPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX368CPN 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 MAX368CPN?
For technical support, including MAX368CPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX368CPN requirements.
6.How does Aetrix verify that MAX368CPN is sourced from the original manufacturer or authorized distributors?
All MAX368CPN 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 MAX368CPN meets industry standards.
7.What is the process for return or replacement of MAX368CPN?
All MAX368CPN units undergo pre-shipment inspection (PSI). If there is an issue with MAX368CPN, 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 MAX368CPN part is unused and in its original packaging.
Return procedure for MAX368CPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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