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Analog Devices Inc./Maxim Integrated MAX335CWG+
- Part No.:
- MAX335CWG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX335CWG+.pdf
- Description:
- IC SW SPST-NOX8 150OHM 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,187
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Product details
Overview
The MAX335CWG+ from Maxim Integrated is an 8-channel serial-controlled SPST analog switch IC with SPI-compatible interface, ±4.5V to ±20V dual-supply operation, 100Ω typical on-resistance, rail-to-rail ±15V analog signal handling, and daisy-chainable shift-register architecture-used for precision signal routing in avionics and process control systems.
For engineers reviewing the MAX335CWG+ datasheet, MAX335CWG+ pinout, MAX335CWG+ application, or MAX335CWG+ equivalent, key selection criteria include its 24-pin wide SO package, guaranteed break-before-make timing (15–25ns), low 2pF off-capacitance per channel, and VL-referenced reset functionality enabling deterministic power-up state.
Technical Context
The MAX335CWG+ implements a synchronous 8-bit serial shift register controlled by CS, where DIN data is latched on SCLK rising edges and DOUT outputs delayed data on falling edges-enabling multi-device daisy chaining without external logic. Its internal parallel latch updates only on CS rising edge when SCLK is low, rejecting CPOL=1/CPHA=1 SPI configurations.
Each of the eight SPST switches features bidirectional conduction, constant on-resistance over full analog range (±15V), and sub-1nA leakage at ±14V. Digital feedthrough is limited to 100nV·sec via integrated SCLK hysteresis (100mV typ), and VL supply sets TTL-compatible thresholds while enabling hardware reset below 0.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports rail-to-rail signal switching across full industrial and avionics voltage ranges |
| On-Resistance (RON) | 100Ω typ - ensures minimal insertion loss and predictable gain error in precision signal paths |
| Off-Leakage Current | ±0.002nA max - preserves high-impedance sensor or reference node integrity |
| Turn-On/Off Time | 200–500ns - enables fast multiplexing in data acquisition systems up to ~2MHz effective rate |
| Off-Capacitance (CNO/OFF) | 2pF - minimizes crosstalk and settling time degradation in high-frequency routing |
| SCLK Max Frequency | 2.1MHz - defines maximum serial update rate for real-time reconfiguration |
| Break-Before-Make Delay | 15–25ns - guarantees no momentary short between channels during state transitions |
Pinout & Package
MAX335CWG+ uses a 24-pin wide SO (Small Outline) package with 0.300" body width, 1.27mm pitch, and standard JEDEC MO-013AC footprint. Pin 1 is SCLK; pins 5–20 carry NOx/COMx switch terminals in interleaved order; V+, V-, GND, VL, CS, DIN, SCLK, and DOUT are dedicated digital/analog supply and interface pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Edge-triggered master clock for shift register; requires hysteresis-compatible waveform |
| 2 V+ | Positive analog supply | Bias for high-side switches; supports ±4.5V to ±20V operation |
| 3 DIN | Serial data input | MSB-first 8-bit control word; each bit independently enables one SPST switch |
| 4 GND | Ground reference | Analog and digital return; must be low-impedance for leakage and noise control |
| 5–20 NO0–NO7 / COM0–COM7 | Switch terminals | Eight independent SPST channels; bidirectional, symmetric conduction path |
| 21 V- | Negative analog supply | Bias for low-side switches; referenced to GND for single-supply operation |
| 22 DOUT | Serial data output | Shift register Q8 output; enables daisy-chaining multiple MAX335CWG+ devices |
| 23 VL | Logic supply/reset | Sets input threshold (2.4V/0.8V) and triggers full reset when <0.8V |
| 24 CS | Chip select | Active-low latch enable; rising edge transfers shift register to analog switch control |
Key Features
| Feature | Design Value |
|---|---|
| SPI-compatible serial interface | Three-wire (DIN/SCLK/CS) with DOUT echo; compatible with Motorola SPI (CPOL=0) and Microwire standards |
| Daisy-chain capability | Single DOUT-to-DIN cascade enables synchronized configuration of multiple MAX335CWG+ units without address decoding |
| Hardware reset via VL | Pulsing VL below 0.8V forces all switches OFF and clears shift register to zero-ensuring known startup state |
| Rail-to-rail analog operation | ±15V signal swing supported with stable RON and sub-nA leakage-critical for sensor front-end and test equipment |
| Low digital feedthrough | 100nV·sec clock coupling; reduced to ~10mVp-p with 100pF channel capacitance-minimizes transient interference |
Applications
| Avionics Signal Routing | Industrial Process Control |
|---|---|
Use Scenario: Reconfigurable analog signal paths in flight control computers requiring EMI-hardened, deterministic switching under wide temperature and supply variation. IC Role / Device Role / Timing Role: Serial-controlled SPST switch array managing discrete sensor inputs (e.g., accelerometers, gyros) to ADC front-ends with guaranteed break-before-make timing. Use Value: Eliminates mechanical relays and reduces PCB area vs. discrete CMOS switches while maintaining ±15V signal integrity and MIL-qualified thermal stability. | Use Scenario: Multiplexing 8 pressure, temperature, and flow transducer outputs into shared DAQ hardware in factory automation PLCs. IC Role / Device Role / Timing Role: Digitally reprogrammable analog switch enabling software-defined channel selection without hardware changes or relay wear-out. Use Value: Enables hot-swappable sensor configurations and firmware-driven calibration sequences using a single 24-pin SO IC instead of multiple quad-switch packages. |
| Test Equipment Multiplexing | Medical Instrumentation |
Use Scenario: High-precision automated test systems routing calibrated reference voltages and DUT signals through guarded paths with minimal crosstalk. IC Role / Device Role / Timing Role: Low-leakage, low-capacitance SPST switch providing 90dB off-isolation and 100dB channel-to-channel crosstalk suppression. Use Value: Maintains measurement accuracy in µV-level biomedical signal conditioning by limiting off-channel coupling and charge injection (<70pC). | Use Scenario: Patient-connected diagnostic devices (e.g., ECG/EEG front-ends) requiring galvanic isolation, low leakage, and fail-safe power-up states. IC Role / Device Role / Timing Role: Safety-critical analog switch ensuring all channels default OFF at power-on and remain isolated during fault conditions via VL reset. Use Value: Meets IEC 60601 creepage/clearance requirements through guaranteed zero-state initialization and <1nA leakage at ±14V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX336CWG+ | 16-channel SPST, same package/supply, but higher 120Ω RON and 3.5µA I+ | Higher channel count suits dense multiplexing; less suitable for ultra-low-loss paths | Select MAX336CWG+ only when 16 channels are required and 20% higher RON is acceptable |
| ADG728BRUZ | 8-channel, SPI interface, but single +3V/+5V supply only; 4.5Ω RON, 1.8ns tON | Optimized for low-voltage, high-speed digital systems-not rated for ±15V analog signals | Choose ADG728BRUZ for battery-powered portable instruments needing speed and low power-not for industrial ±15V rails |
Compared with MAX335CWG+, MAX336CWG+ trades lower channel density for expanded count, while ADG728BRUZ sacrifices bipolar analog range and robustness for speed and single-supply simplicity-making MAX335CWG+ uniquely suited for ±15V rail-to-rail industrial and avionics signal routing.
Availability
MAX335CWG+ is available at Aetrix Electronics and suitable for avionics signal routing, industrial process control, and test equipment multiplexing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX335CWG+ 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 high-reliability semiconductor solutions for industrial, automotive, communications, and medical markets.
The MAX335CWG+ belongs to Maxim's high-voltage serial-switch product line, engineered for robust signal routing in harsh environments where ±15V analog integrity, deterministic reset, and daisy-chain scalability are critical.
FAQ
What is the absolute maximum analog signal voltage the MAX335CWG+ can handle?
The MAX335CWG+ supports analog signals from V− −2V to V+ +2V. With V+ = +15V and V− = −15V, this allows ±15V rail-to-rail operation-verified across the full 0°C to +70°C temperature range. Exceeding these limits risks permanent damage per Absolute Maximum Ratings.
Does the MAX335CWG+ require external pull-up resistors on DIN, SCLK, or CS lines?
No, the MAX335CWG+ does not require external pull-ups. Its digital inputs (DIN, SCLK, CS) have specified VIH/VIL thresholds (e.g., 2.4V/0.8V at VL = +5V) and draw ≤0.03µA input current, allowing direct connection to microcontroller GPIOs. Pull-ups may be added only if system-level noise immunity demands it.
How does the VL pin function beyond setting logic thresholds in the MAX335CWG+?
In the MAX335CWG+, VL serves dual roles: (1) it sets input logic thresholds (VIH = 2.4V, VIL = 0.8V at VL = +5V), and (2) it enables hardware reset-dropping VL below 0.8V forces all switches OFF and clears the internal shift register to zero, ensuring deterministic startup behavior independent of software initialization.
Can multiple MAX335CWG+ devices share a single SCLK and DIN line while maintaining independent control?
Yes-via addressable serial interface mode. Connect DIN, SCLK, and DOUT in parallel across all devices, then use individual CS lines (driven by address decode logic) to select which MAX335CWG+ accepts data. Only the device with CS low shifts in new configuration; others retain prior state. DOUT is unused in this topology.
What is the guaranteed break-before-make timing specification for the MAX335CWG+?
The MAX335CWG+ guarantees a break-before-make delay of 15ns minimum to 25ns maximum, measured between turn-off of one switch and turn-on of another during state transitions. This parameter is production-tested and ensures no momentary short-circuit between channels-critical for protecting sensitive analog sources and loads.
MAX335CWG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 8
- On-State Resistance (Max):
- 150Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 400ns, 400ns
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 2pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -100dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
MAX335CWG+ FAQ
1.How can I place an order for MAX335CWG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX335CWG+ 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 MAX335CWG+ reliable?
The price and inventory of MAX335CWG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX335CWG+ is usually 5 days.
3.What payment methods are accepted for MAX335CWG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX335CWG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX335CWG+?
MAX335CWG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX335CWG+ 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 MAX335CWG+?
For technical support, including MAX335CWG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX335CWG+ requirements.
6.How does Aetrix verify that MAX335CWG+ is sourced from the original manufacturer or authorized distributors?
All MAX335CWG+ 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 MAX335CWG+ meets industry standards.
7.What is the process for return or replacement of MAX335CWG+?
All MAX335CWG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX335CWG+, 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 MAX335CWG+ part is unused and in its original packaging.
Return procedure for MAX335CWG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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