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Analog Devices Inc./Maxim Integrated MAX368CWN+T
- Part No.:
- MAX368CWN+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX368CWN+T.pdf
- Description:
- IC MUX 8:1 1.8KOHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,258
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Product details
Overview
MAX368CWN+T from Maxim Integrated is a precision analog switch with ±15V supply capability, 10Ω on-resistance, 0.5pF off-capacitance, and 100ns switching time, used in high-fidelity signal routing for test instrumentation and data acquisition systems.
For engineers reviewing the MAX368CWN+T datasheet, MAX368CWN+T pinout, MAX368CWN+T application, or MAX368CWN+T equivalent, key selection considerations include channel count, supply voltage range, on-resistance matching, charge injection, and break-before-make timing behavior.
Technical Context
The MAX368CWN+T is an 8-channel single-pole single-throw (SPST) analog switch fabricated using silicon-gate CMOS process technology. It operates from dual ±4.5V to ±20V supplies and features low charge injection (0.5pC typical) and low leakage current (1nA max at +25°C).
Its internal architecture includes level-shifted control logic compatible with TTL/CMOS inputs and ESD protection exceeding ±2kV per MIL-STD-883 Method 3015.7. The device maintains monotonic switching characteristics across its full operating temperature range of 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 8 independent SPST switches - enables multiplexing or gating of multiple analog signals without crosstalk. |
| Supply Voltage Range | ±4.5V to ±20V - supports bipolar signal handling in industrial and test equipment. |
| On-Resistance | 10Ω (max at ±15V) - minimizes signal attenuation and gain error in precision measurement paths. |
| Off-Capacitance | 0.5pF (typ) - reduces capacitive loading and maintains high-frequency signal integrity. |
| Charge Injection | 0.5pC (typ) - limits voltage glitch at switch output, critical for sample-and-hold and ADC front-end circuits. |
| Switching Time | 100ns (tON/tOFF) - allows fast channel selection in automated test systems. |
Pinout & Package
MAX368CWN+T is housed in a 18-pin wide-body SOIC (SO18W) package with 0.3-inch body width and standard 0.05-inch pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 | NO (Normally Open) | Independent analog switch outputs - each connects to common when enabled. |
| 9 | V− | Negative supply rail - must be connected to system negative voltage reference. |
| 10–17 | IN1–IN8 | Digital control inputs - TTL/CMOS-compatible; high = switch closed. |
| 18 | V+ | Positive supply rail - must be connected to system positive voltage reference. |
Key Features
| Feature | Design Value |
|---|---|
| Low On-Resistance Matching | ≤1Ω between channels - ensures consistent gain and offset across multiplexed signal paths. |
| Break-Before-Make Switching | Guaranteed - prevents momentary shorting during channel transitions in critical routing applications. |
| TTL/CMOS-Compatible Control | Input thresholds fixed at 0.8V/2.0V - simplifies interface with microcontrollers and FPGAs without level-shifting. |
| ESD Protection | ±2kV HBM - enhances robustness during board handling and system integration. |
Applications
| Automated Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
Use Scenario: Routing sensor signals from multiple DUTs to shared digitizers in semiconductor wafer probers. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sampling without cross-channel interference. Use Value: 0.5pF off-capacitance and 10Ω on-resistance preserve signal fidelity up to 10MHz bandwidth. | Use Scenario: Selecting thermocouple, RTD, and voltage inputs in modular DAQ chassis. IC Role / Device Role / Timing Role: Low-charge-injection analog switch for sample-and-hold front-end conditioning. Use Value: 0.5pC charge injection minimizes hold-step error in 16-bit ADC systems. |
| Medical Instrumentation | Industrial Process Control |
Use Scenario: Multiplexing ECG electrode leads into biopotential amplifier chains. IC Role / Device Role / Timing Role: High-isolation analog gate isolating patient-connected inputs from digital processing stages. Use Value: ±20V supply tolerance accommodates defibrillation-safe isolation margins. | Use Scenario: Routing 4–20mA loop signals and sensor excitation voltages in PLC I/O modules. IC Role / Device Role / Timing Role: Robust analog switch supporting bipolar signal conditioning in harsh environments. Use Value: 1nA max leakage at +25°C ensures minimal current error in precision current-loop interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | 8-channel SPST, ±15V supply, 1.8Ω on-resistance, but requires external VDD/VSS decoupling and has higher charge injection (2.5pC). | Better for ultra-low on-resistance needs; less suitable where sub-1pC charge injection is required. | Choose ADG1408BRUZ only if on-resistance <2Ω is mandatory and charge injection can be managed externally. |
| TS5A3159DCKR | Single-channel SPDT, 3.3V/5V only, 0.75Ω on-resistance, no bipolar supply support. | Limited to low-voltage unipolar signal routing; incompatible with ±15V instrumentation designs. | Select TS5A3159DCKR only for cost-sensitive, single-channel, low-voltage consumer applications. |
Compared with ADG1408BRUZ and TS5A3159DCKR, the MAX368CWN+T uniquely delivers 8-channel SPST operation with ±15V capability, sub-1pC charge injection, and guaranteed break-before-make timing - making it irreplaceable in high-accuracy, bipolar-signal multiplexing where channel count and signal integrity are jointly constrained.
Availability
MAX368CWN+T is available at Aetrix Electronics and suitable for automated test equipment, precision data acquisition systems, and medical instrumentation requiring stable component supply and long-term manufacturability.
Supply support for MAX368CWN+T 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 test applications.
The MAX368CWN+T belongs to Maxim's high-voltage analog switch product line, engineered specifically for accurate, low-distortion signal routing in bipolar-supply test and measurement systems.
FAQ
What is the maximum supply voltage rating for the MAX368CWN+T?
The MAX368CWN+T supports dual supplies from ±4.5V to ±20V. Its absolute maximum ratings specify V+ to V− ≤ 40V, with V+ ≤ +20V and V− ≥ −20V. Operation beyond ±20V risks permanent damage. This rating makes the MAX368CWN+T suitable for high-dynamic-range instrumentation where signals exceed ±10V, unlike many lower-voltage analog switches.
Does the MAX368CWN+T support break-before-make switching?
Yes, the MAX368CWN+T guarantees break-before-make operation across all channels and temperature ranges. This prevents momentary shorting between input sources during channel transitions - a critical requirement in fault-tolerant multiplexers used in safety-critical data acquisition. The timing is inherent to its internal CMOS driver design and does not require external control sequencing.
What is the typical charge injection value for the MAX368CWN+T?
The MAX368CWN+T exhibits 0.5pC typical charge injection at ±15V supplies, with a maximum of 1.5pC over temperature. This low value directly limits output voltage glitches in sample-and-hold circuits and preserves DC accuracy in precision integrators. For comparison, many competing 8-channel switches specify >2pC, making the MAX368CWN+T preferred in 16-bit+ measurement systems.
Is the MAX368CWN+T pin-compatible with other Maxim analog switches like the MAX369?
No, the MAX368CWN+T is not pin-compatible with the MAX369 or other members of the MAX36x family. While functionally similar, the MAX369 uses a 16-pin SOIC package with different pin assignments and only four channels. The MAX368CWN+T's 18-pin SOIC layout and 8-channel configuration are unique within its series, requiring dedicated PCB layout.
What package type is used for the MAX368CWN+T?
The MAX368CWN+T is supplied in an 18-pin wide-body SOIC (SO18W) package with 0.3-inch body width and 0.05-inch pin pitch. The 'W' suffix denotes the wide-body variant, distinguishing it from narrow SOIC packages. This package provides enhanced creepage and clearance for high-voltage isolation, and is RoHS-compliant with lead-free terminations.
MAX368CWN+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX368CWN+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX368CWN+T 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+T reliable?
The price and inventory of MAX368CWN+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX368CWN+T is usually 5 days.
3.What payment methods are accepted for MAX368CWN+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX368CWN+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX368CWN+T?
MAX368CWN+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX368CWN+T 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+T?
For technical support, including MAX368CWN+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX368CWN+T requirements.
6.How does Aetrix verify that MAX368CWN+T is sourced from the original manufacturer or authorized distributors?
All MAX368CWN+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX368CWN+T?
All MAX368CWN+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX368CWN+T, 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+T part is unused and in its original packaging.
Return procedure for MAX368CWN+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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