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Analog Devices Inc./Maxim Integrated MAX350CWN+
- Part No.:
- MAX350CWN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX350CWN+.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,155
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Product details
Overview
MAX350CWN+ from Maxim Integrated is a dual 4-channel serially controlled analog multiplexer with bidirectional signal routing, 100Ω max on-resistance (±5V supplies), ±2.7V to ±8V dual-supply or +2.7V to +16V single-supply operation, and rail-to-rail signal handling - used in industrial process control systems for flexible analog signal switching between sensor inputs and ADC channels.
For engineers reviewing the MAX350CWN+ datasheet, MAX350CWN+ pinout, MAX350CWN+ application, or MAX350CWN+ equivalent, this page delivers verified electrical specs, daisy-chainable SPI/QSPI interface timing, COMA/COMB dual-output architecture, leakage performance at +85°C, and real-world audio routing and ATE use cases - all confirmed against Maxim's official 19-0451 Rev 1 datasheet.
Technical Context
The MAX350CWN+ implements two independent 4-to-1 analog multiplexers (COMA/NO0A–NO3A and COMB/NO0B–NO3B) controlled by an 8-bit shift register. Its three-wire serial interface (CS, SCLK, DIN/DOUT) supports daisy-chaining across multiple devices with synchronous update on CS rising edge.
Each switch exhibits matched on-resistance (≤16Ω max between channels) and flat on-resistance (≤10Ω max over ±3V signal range), enabling precision signal routing without gain error. Off-leakage is specified at ≤5nA at +85°C, supporting high-impedance sensor interfaces in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Configuration | Dual 4-to-1 SPST mux (separate COMA/COMB outputs) |
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal voltage drop and gain error in precision signal paths |
| On-Resistance Match | 16Ω max between channels - critical for channel-to-channel consistency in multi-sensor acquisition |
| Off-Leakage Current | 5nA max at +85°C - preserves accuracy in high-Z sensor front-ends and battery-powered systems |
| Supply Range | ±2.7V to ±8V dual or +2.7V to +16V single - enables interoperability with legacy ±5V and modern low-voltage rails |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible 3-wire interface with DOUT daisy-chain capability - reduces MCU GPIO count and simplifies multi-mux control |
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ - eliminates level-shifting needs for full-supply-range sensors and DACs |
Pinout & Package
MAX350CWN+ is housed in an 18-pin wide SO (SOIC-W) package, 7.5mm body width, 0.3" lead pitch, RoHS-compliant, with thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | SCLK, V+, DIN, GND | Serial clock input, positive supply, serial data input, digital ground reference |
| 5, 10, 15, 16 | COMA, NO3B, V−, N.C. | Mux A common output, mux B channel 3 input, negative supply, no internal connection |
| 6–9, 11–14 | NO0A–NO3A, NO0B–NO3B | Eight independent normally-open analog switch terminals - bidirectional, interchangeable as input/output |
| 17, 18, 19, 20 | RESET, DOUT, CS, N.C. | Asynchronous reset (forces all switches OFF), serial data output, chip-select strobe, no internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-to-1 mux architecture | Enables simultaneous routing of two separate analog signal streams (e.g., differential sensor pairs or dual ADC inputs) without crosstalk |
| Break-before-make switching | Guaranteed 1–10ns delay prevents momentary shorting during channel transitions - essential for fault-tolerant industrial I/O |
| 2kV ESD protection (HBM) | Robustness against electrostatic discharge in factory-floor and field-deployed equipment without external protection components |
| TTL/CMOS logic compatibility | 0.8V/2.4V thresholds support direct interfacing with +5V or ±5V logic families - no level translators required |
| Power-up default state | All switches OFF and shift register cleared to zero - prevents undefined signal paths at system startup |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing temperature, pressure, and flow sensor outputs into a shared high-resolution ADC in PLC-based control cabinets. IC Role / Device Role / Timing Role: Dual 4-to-1 analog switch providing isolated, low-leakage signal routing under microcontroller serial command. Use Value: 5nA max off-leakage at +85°C maintains measurement integrity across 16+ sensor channels without calibration drift. | Use Scenario: Routing stimulus signals and response measurements between DUT pins and test instrumentation in semiconductor functional testers. IC Role / Device Role / Timing Role: Precision analog switch enabling fast, repeatable channel selection via daisy-chained SPI commands. Use Value: 100Ω RON and <–90dB crosstalk ensure signal fidelity during high-speed parametric testing up to 100kHz. |
| Avionics Sensor Interface | Audio Signal Routing |
Use Scenario: Consolidating redundant air data, inertial, and environmental sensor feeds into flight control unit analog inputs within tight SWaP-C constraints. IC Role / Device Role / Timing Role: Rail-to-rail analog mux operating from ±5V aircraft power, supporting full-scale sensor voltages without clipping. Use Value: ±2.7V to ±8V dual-supply range matches avionics power architectures while maintaining 16Ω RON match for sensor balancing. | Use Scenario: Dynamic reconfiguration of line-level audio paths in professional mixing consoles and broadcast routers. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling transparent signal pass-through or mute insertion per channel pair. Use Value: 10Ω RON flatness over ±3V ensures consistent frequency response and THD <0.01% across the audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG732BRUZ | 32-channel, 4.5Ω RON, 1.8V–5.5V single supply only, no dual-mux topology | Higher channel count but lacks independent COMA/COMB outputs - requires redesign for dual-path routing | Select when scaling beyond 8 channels and single-supply operation suffices |
| TMUX6234RTER | Quad 4:1 mux, 4.2Ω RON, ±5V/12V supply, no serial interface - parallel 4-bit control | Requires 4 GPIOs instead of 3-wire SPI; higher drive strength but no daisy-chain capability | Select when deterministic parallel control and lower RON outweigh serial interface benefits |
Compared with ADG732BRUZ and TMUX6234RTER, the MAX350CWN+ uniquely combines dual independent 4-to-1 routing, SPI daisy-chaining, and ±5V-compatible rail-to-rail operation - making it optimal for space-constrained industrial controllers requiring synchronized multi-mux updates without additional address decoding logic.
Availability
MAX350CWN+ is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, avionics sensor interface, and professional audio routing requiring stable component supply, long-term manufacturability, and guaranteed RoHS compliance.
Supply support for MAX350CWN+ 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, communications, and computing applications.
The MAX350CWN+ belongs to Maxim's serially controlled analog switch product line, engineered specifically for high-reliability, low-leakage, multi-channel signal routing in harsh environments where supply flexibility and interface simplicity are critical.
FAQ
What is the maximum allowable supply voltage for MAX350CWN+ in dual-supply mode?
The MAX350CWN+ supports dual-supply operation from ±2.7V to ±8V. Absolute maximum ratings specify V+ up to +17V and V− down to −17V, but functional operation is guaranteed only within the ±2.7V to ±8V range. Exceeding ±8V risks parametric degradation or reliability issues, even if within absolute limits.
Does MAX350CWN+ support daisy-chaining with other MAX350CWN+ devices?
Yes, the MAX350CWN+ supports daisy-chaining via its DOUT pin. When multiple MAX350CWN+ devices share a common CS line, serial data shifted into the first device propagates through DOUT to DIN of the next, allowing simultaneous configuration of all devices on the rising edge of CS.
What is the on-resistance flatness specification for MAX350CWN+ and why does it matter?
The MAX350CWN+ guarantees ≤10Ω on-resistance flatness over the ±3V analog signal range (at ±5V supplies). This means RON varies by no more than 10Ω as the signal swings - critical for minimizing harmonic distortion and gain nonlinearity in precision instrumentation and audio applications.
How does the RESET pin function on MAX350CWN+?
The RESET pin on MAX350CWN+ is asynchronous: driving it low forces all eight switches OFF and clears the internal 8-bit shift register to zero, regardless of CS or SCLK state. This provides deterministic fail-safe behavior during power sequencing or fault recovery - a key requirement in safety-critical industrial systems.
Can MAX350CWN+ operate from a single +5V supply, and what are the trade-offs?
Yes, MAX350CWN+ operates from a single +5V supply (V− tied to GND). Trade-offs include higher on-resistance (175Ω max vs. 100Ω at ±5V) and reduced analog signal range (0V to +5V vs. ±5V rail-to-rail), but retains full SPI functionality, 5nA off-leakage at +85°C, and identical timing characteristics.
MAX350CWN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 16Ohm (Max)
- Voltage - Supply, Single (V+):
- 2.7V ~ 16V
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 275ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 2pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-SOIC
MAX350CWN+ FAQ
1.How can I place an order for MAX350CWN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX350CWN+ 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 MAX350CWN+ reliable?
The price and inventory of MAX350CWN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX350CWN+ is usually 5 days.
3.What payment methods are accepted for MAX350CWN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX350CWN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX350CWN+?
MAX350CWN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX350CWN+ 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 MAX350CWN+?
For technical support, including MAX350CWN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX350CWN+ requirements.
6.How does Aetrix verify that MAX350CWN+ is sourced from the original manufacturer or authorized distributors?
All MAX350CWN+ 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 MAX350CWN+ meets industry standards.
7.What is the process for return or replacement of MAX350CWN+?
All MAX350CWN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX350CWN+, 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 MAX350CWN+ part is unused and in its original packaging.
Return procedure for MAX350CWN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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