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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:4,575
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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 200ns 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 criteria include channel count, supply voltage range, on-resistance matching, break-before-make timing, and SO-16 package compatibility with legacy industrial control PCBs.
Technical Context
The MAX368CPN+ implements CMOS transmission-gate architecture with integrated level-shifting circuitry to support dual ±15V supplies. It features break-before-make switching to prevent signal shorting during channel transitions and guarantees monotonic switching behavior across its full operating temperature range.
Its logic interface accepts TTL/CMOS-compatible input levels referenced to VSS, enabling direct connection to microcontrollers without level translation. Channel selection is controlled via three binary address inputs (A0–A2) and an enable pin (EN), supporting both individual channel activation and global disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 8 independent analog switches - supports multiplexing of up to eight sensor or signal sources to one measurement path. |
| Supply Voltage Range | ±15V - enables direct interfacing with industrial ±10V instrumentation signals without external level shifting. |
| On-Resistance | 100Ω max at ±15V - ensures minimal gain error and signal attenuation in precision 12-bit+ data acquisition designs. |
| Switching Time | 200ns typical (tON/tOFF) - supports sampling rates up to 500kHz in time-critical sequential acquisition systems. |
| Off-Leakage Current | ±2nA max at +25°C - preserves high-impedance source integrity and prevents loading errors in thermocouple or pH probe circuits. |
| Channel-to-Channel Crosstalk | −74dB at 100kHz - maintains signal isolation between active and inactive channels in mixed-signal environments. |
Pinout & Package
Package: 16-pin plastic DIP (SO-16 wide-body variant per MAX368 datasheet revision 0, dated 1999).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Analog Inputs (IN1–IN8) | Eight bidirectional analog signal terminals - each connects to a sensor or signal source; polarity-insensitive for AC/DC signals. |
| 9 | VSS | Negative supply rail - referenced for logic inputs and internal biasing; must be connected to −15V for full specification compliance. |
| 10 | EN | Active-low enable - disables all channels when high; allows system-level power gating and fault-safe shutdown. |
| 11 | A0 | LSB address input - selects channel pair (odd/even) in conjunction with A1 and A2. |
| 12 | A1 | Mid-bit address input - determines quadrant (1–4) of the 8-channel matrix. |
| 13 | A2 | MSB address input - selects upper or lower half of channel set (1–4 vs. 5–8). |
| 14 | OUT | Common analog output - single terminal shared by all channels; routed to ADC input or signal conditioner. |
| 15 | VDD | Positive supply rail - must be connected to +15V to meet on-resistance and switching time specs. |
| 16 | GND | Digital ground reference - ties logic interface to system ground plane; separate from analog ground in mixed-signal layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guarantees no overlap between channel conduction periods, eliminating transient shorts in multi-source routing applications. |
| TTL/CMOS-compatible logic inputs | Accepts 0V–5V control signals directly from microcontrollers or FPGAs without external level shifters or pull-ups. |
| Matched on-resistance (ΔRON) | ≤5Ω between any two channels - ensures consistent gain scaling across all multiplexed paths in calibrated systems. |
| Low charge injection (0.5pC) | Minimizes voltage glitch at OUT during switching, critical for sample-and-hold stability in high-resolution ADC front-ends. |
| Specified operation at +25°C and +70°C | Validated performance over commercial temperature range - suitable for factory automation and test equipment without derating. |
Applications
| Industrial Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing outputs from eight RTD or strain gauge bridges into a single 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Analog signal router with precise channel isolation and low thermal EMF. Use Value: Enables cost-effective channel expansion without adding ADCs; maintains <0.01% gain error across all paths. | Use Scenario: Routing calibration references and DUT signals within a modular PXI-based test head. IC Role / Device Role / Timing Role: High-isolation switch matrix element with deterministic 200ns channel settling. Use Value: Supports 100kSPS automated calibration sequences while preserving signal fidelity across 1MHz bandwidth. |
| Medical Instrumentation | Process Control Systems |
Use Scenario: Selecting among eight ECG electrode leads for differential amplification in portable patient monitors. IC Role / Device Role / Timing Role: Low-leakage analog multiplexer ensuring sub-nA input bias current integrity. Use Value: Prevents baseline drift and motion artifact amplification in high-gain biopotential front-ends. | Use Scenario: Scanning 4–20mA current loop inputs from distributed field transmitters in PLC analog input modules. IC Role / Device Role / Timing Role: Robust channel selector rated for ±15V supply and industrial noise immunity. Use Value: Eliminates need for discrete relay-based scanning; reduces module size and improves long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508AKRZ-REEL7 | Single-supply only (up to +16.5V); no negative rail support; 120Ω RON; SOIC-16 package. | Not suitable for bipolar ±10V signal routing; requires level-shifting for dual-rail sensor interfaces. | Select when system uses only positive supplies and lower cost is prioritized over bipolar signal handling. |
| CD4051BM96 | 3V–20V single-supply operation; 120Ω RON; higher leakage (±100nA); no guaranteed break-before-make. | Limited to low-precision, low-speed applications; unsuitable for 12-bit+ acquisition or fast scanning. | Choose for non-critical consumer-grade signal routing where leakage and switching artifacts are tolerable. |
Compared with ADG508AKRZ-REEL7 and CD4051BM96, the MAX368CPN+ uniquely supports true dual ±15V operation with guaranteed break-before-make timing and sub-nA leakage-making it the only option for precision industrial and medical multiplexing where signal polarity, isolation, and settling integrity are design-critical.
Availability
MAX368CPN+ is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and medical instrumentation requiring stable component supply and long-lifecycle support.
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 demanding industrial, medical, and communications applications.
The MAX368CPN+ belongs to Maxim's high-voltage analog switch family, engineered specifically for robust signal routing in ±15V industrial control and test instrumentation systems.
FAQ
What is the maximum signal voltage swing supported by the MAX368CPN+?
The MAX368CPN+ supports analog signal voltages from VSS to VDD, i.e., ±15V when operated with dual supplies. This allows full-range routing of industrial ±10V signals without clipping or distortion. The device's overvoltage tolerance is limited to the supply rails, and exceeding them risks latch-up or permanent damage. Always ensure signal sources remain within the powered supply boundaries for reliable operation of the MAX368CPN+.
Does the MAX368CPN+ require external pull-up resistors on its address lines?
No, the MAX368CPN+ does not require external pull-up resistors on A0, A1, A2, or EN pins. Its logic inputs are TTL/CMOS-compatible and internally biased to recognize valid high/low states across the full 0V–5V range. External resistors may be added only for noise immunity in electrically noisy environments-but they are not necessary for basic functionality of the MAX368CPN+.
Is the MAX368CPN+ pin-compatible with newer Maxim multiplexers like the MAX369?
No, the MAX368CPN+ is not pin-compatible with the MAX369. While both are 8-channel analog multiplexers, the MAX369 uses a different pinout (including relocated VSS and logic ground) and lacks the EN pin. Direct replacement would require PCB layout changes. For drop-in upgrades, consult the MAX368CPN+ datasheet revision history and verify mechanical and electrical compatibility before redesigning with the MAX368CPN+.
What is the thermal performance of the MAX368CPN+ in continuous operation?
The MAX368CPN+ is characterized for operation from +25°C to +70°C ambient, with no derating required within that range. Its SO-16 package has a θJA of 60°C/W, and typical power dissipation remains below 15mW under full channel load. For extended temperature use beyond +70°C, thermal simulation and validation are required-data for the MAX368CPN+ does not extend to industrial or automotive temperature grades.
Can the MAX368CPN+ be used with single-supply systems?
The MAX368CPN+ is specified only for dual ±15V operation and is not characterized for single-supply use. Attempting to operate it with only +15V and GND will result in undefined logic behavior, degraded on-resistance, and potential damage due to internal bias violations. For single-supply applications, consider alternatives explicitly rated for that configuration-do not substitute the MAX368CPN+ without full electrical validation.
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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