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Analog Devices Inc./Maxim Integrated MAX335CNG+
- Part No.:
- MAX335CNG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX335CNG+.pdf
- Description:
- IC SWITCH SPST-NOX8 150OHM 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,614
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Product details
Overview
MAX335CNG+ 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 DOUT for multi-device control in signal routing systems.
For engineers reviewing the MAX335CNG+ datasheet, MAX335CNG+ pinout, MAX335CNG+ application, or MAX335CNG+ equivalent, this device supports high-voltage serial-switching architectures requiring deterministic timing, low charge injection (<70pC), sub-500ns switching, and industrial temperature stability (0°C to +70°C) in narrow 24-pin DIP packaging.
Technical Context
The MAX335CNG+ implements an 8-bit shift register synchronized to SCLK's rising edge, with CS-controlled latch update on its rising edge only when SCLK is low-ensuring deterministic configuration loading. Its internal translator circuitry enables TTL-level logic compatibility via VL = +5V while supporting full ±20V analog swing across all eight SPST channels.
Switch control is bit-mapped: each DIN bit (D7–D0) directly controls one NO/COM pair, with no decoding logic-enabling direct 1:1 digital-to-analog path mapping. Daisy chaining uses DOUT as cascaded DIN, preserving bit alignment across devices without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports rail-to-rail signal routing without clipping in ±15V systems |
| On-Resistance | 100Ω typ - ensures minimal voltage drop and signal distortion at 1mA load current |
| Switch Turn-On/Off Time | 200–500ns - enables fast multiplexing in data acquisition sampling windows |
| SCLK Max Frequency | 2.1MHz - allows >476ns minimum clock period for reliable serial programming |
| Off-Leakage Current | ±0.002nA typ - preserves high-impedance signal integrity in precision sensor front-ends |
| Charge Injection | <70pC - minimizes transient glitches during switching in sampled-data systems |
| Power Supply Range | ±4.5V to ±20V - accommodates wide industrial supply rails including ±12V and ±15V |
| Logic Supply (VL) | +4.5V to +V+ - sets input threshold and enables reset function when VL < 0.8V |
Pinout & Package
MAX335CNG+ is housed in a 24-pin narrow plastic DIP package (0.300" width), with through-hole mounting, 2.54mm lead pitch, and JEDEC MS-001 compliant footprint. Pin 1 is SCLK; pin 24 is CS; pins 5–20 are paired NO/COM terminals (NO0–NO7 and COM0–COM7); V+, V-, GND, VL, DIN, SCLK, DOUT, and CS complete the interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Edge-triggered master clock for shift register; rising edge clocks DIN data |
| 3 DIN | Serial data input | MSB-first 8-bit control word; each bit enables one SPST switch |
| 22 DOUT | Serial data output | Shift register Q7 output; enables daisy-chaining of multiple MAX335CNG+ |
| 24 CS | Chip select | Active-low latch enable; rising edge updates switch states from shift register |
| 23 VL | Logic supply/reset | +5V reference for TTL-compatible inputs; falling below 0.8V resets switches and register |
| 5–20 NO0–NO7 / COM0–COM7 | Analog switch terminals | Eight independent bidirectional SPST paths; symmetric conduction, no polarity dependence |
| 2 V+, 21 V- | Analog power supplies | Support ±4.5V to ±20V operation; define analog signal range and on-resistance |
| 4 GND | Ground reference | Common return for logic and analog sections; decoupling critical for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| SPI-compatible 3-wire interface | Direct integration with microcontroller SPI peripherals using CPOL=0, CPHA=0 mode |
| Daisy-chain capability | Single SCLK/DIN/CS bus controls unlimited MAX335CNG+ units via DOUT-to-DIN cascade |
| Rail-to-rail ±15V analog switching | Enables signal routing in legacy ±15V instrumentation, avionics, and process control systems |
| Low 100Ω on-resistance | Maintains signal fidelity in 50Ω–1kΩ impedance environments without gain error or bandwidth loss |
| Sub-500ns switching speed | Supports multiplexing rates up to 2MHz in time-critical data acquisition applications |
| Reset via VL pin | Pulsing VL below 0.8V forces all switches OFF and clears shift register-no external POR circuit needed |
Applications
| Avionics Signal Routing | Industrial Data Acquisition |
|---|---|
Use Scenario: Reconfigurable analog signal paths in flight control sensor conditioning modules where EMI resilience and wide supply tolerance are mandatory. IC Role / Device Role / Timing Role: Serial-controlled SPST switch matrix routing discrete transducer outputs to shared ADC channels under microcontroller command. Use Value: ±20V supply support and 90dB off-isolation prevent cross-channel coupling in high-density avionics harnesses. | Use Scenario: Multiplexing 8 thermocouple or strain gauge inputs into a single precision ADC in PLC I/O modules. IC Role / Device Role / Timing Role: Digitally addressed analog switch enabling sequential sampling with deterministic tON/tOFF < 500ns. Use Value: 100Ω RON and <70pC charge injection preserve µV-level measurement accuracy across all channels. |
| Network Test Equipment | Medical Instrumentation |
Use Scenario: Automated RF/IF signal path selection in modular network analyzers requiring repeatable, low-distortion switching. IC Role / Device Role / Timing Role: High-voltage SPST switch providing isolated signal routing between test ports and calibration standards. Use Value: 100dB channel-to-channel crosstalk and 2pF off-capacitance minimize signal leakage in GHz-range stimulus-response setups. | Use Scenario: Patient-connected analog front-end switching in multi-parameter monitors where safety isolation and leakage limits are critical. IC Role / Device Role / Timing Role: Isolated SPST switch selecting ECG, EEG, or SpO₂ sensor inputs while maintaining <0.002nA off-leakage. Use Value: Biocompatible leakage performance meets IEC 60601-1 patient leakage requirements without additional guarding circuitry. |
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, but parallel 3-wire interface (not serial); 4.7Ω RON; requires 3 address lines + EN | No daisy-chaining; higher board density but more GPIO usage; unsuitable for long-distance serial bus topologies | Choose ADG1408BRUZ when lowest on-resistance and parallel control are prioritized over wiring simplicity. |
| TMUX1308PWR | 8-channel SPST, single +1.8V to +5.5V supply only; 5.5Ω RON; SPI-compatible but no DOUT daisy-chain; max analog swing = VDD | Limited to low-voltage systems; cannot handle ±15V signals; lacks industrial temp grade (-40°C to +125°C available) | Choose TMUX1308PWR only for battery-powered, low-voltage, cost-sensitive designs without high-voltage routing needs. |
Compared with ADG1408BRUZ and TMUX1308PWR, the MAX335CNG+ uniquely combines high-voltage ±20V operation, true SPI daisy-chaining, and industrial temperature range in a through-hole DIP package-making it irreplaceable for legacy-replacement and ruggedized serial-switching applications.
Availability
MAX335CNG+ is available at Aetrix Electronics and suitable for avionics signal routing, industrial data acquisition, and network test equipment requiring stable component supply, long-term obsolescence management, and through-hole assembly compatibility.
Supply support for MAX335CNG+ 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, and communications markets.
The MAX335 product line delivers serially controlled high-voltage analog switches targeting applications demanding robust signal integrity, deterministic timing, and simplified system-level interconnect-especially where legacy ±15V infrastructure remains in service.
FAQ
What is the maximum analog signal voltage the MAX335CNG+ can switch?
The MAX335CNG+ supports rail-to-rail analog signals from -15V to +15V when operated with ±15V supplies. Its absolute maximum analog voltage range extends to ±20V, but guaranteed linear operation and on-resistance specs apply within ±15V per the datasheet's Electrical Characteristics table. Exceeding ±15V may increase RON variation and leakage, so design margins should respect the ±15V specified analog signal range.
Does the MAX335CNG+ require external pull-up resistors on DIN, SCLK, or CS?
No, the MAX335CNG+ does not require external pull-up resistors on DIN, SCLK, or CS. Its input thresholds (VIH = 2.4V at VL = +5V; VIL = 0.8V) and low input current (±0.03µA typ) allow direct connection to standard CMOS or microcontroller GPIO outputs. Pull-ups are unnecessary unless open-drain drivers are used-which is not typical for SPI interfaces driving the MAX335CNG+.
Can multiple MAX335CNG+ devices share a single SCLK and DIN line without contention?
Yes-when configured in daisy-chain mode, multiple MAX335CNG+ devices share SCLK and DIN, with CS tied in common. Data propagates serially: the first device's DOUT connects to the second's DIN, and so on. All devices update simultaneously on the common CS rising edge after 8 × N clocks, eliminating contention and ensuring atomic reconfiguration across the chain.
What happens to the switches during power-up of the MAX335CNG+?
Upon power-up, the MAX335CNG+ initializes all internal registers to zero, forcing all eight SPST switches to the OFF state regardless of supply ramp order. This power-on reset behavior is inherent and requires no external circuitry. The shift register remains cleared until valid serial data is clocked in and latched via CS, ensuring predictable default isolation.
Is the MAX335CNG+ compatible with modern 3.3V microcontrollers?
Yes-the MAX335CNG+ is compatible with 3.3V microcontrollers when VL is supplied at +3.3V (within its 4.5V to V+ range). At VL = +3.3V, VIH ≈ 1.7V and VIL ≈ 0.5V per interpolation of datasheet thresholds, well within 3.3V logic margins. However, VL must remain ≥4.5V if using the reset function, so separate VL regulation may be needed for full feature compatibility.
MAX335CNG+ 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:
- Through Hole
- Supplier Device Package:
- 24-PDIP
MAX335CNG+ FAQ
1.How can I place an order for MAX335CNG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX335CNG+ 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 MAX335CNG+ reliable?
The price and inventory of MAX335CNG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX335CNG+ is usually 5 days.
3.What payment methods are accepted for MAX335CNG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX335CNG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX335CNG+?
MAX335CNG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX335CNG+ 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 MAX335CNG+?
For technical support, including MAX335CNG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX335CNG+ requirements.
6.How does Aetrix verify that MAX335CNG+ is sourced from the original manufacturer or authorized distributors?
All MAX335CNG+ 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 MAX335CNG+ meets industry standards.
7.What is the process for return or replacement of MAX335CNG+?
All MAX335CNG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX335CNG+, 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 MAX335CNG+ part is unused and in its original packaging.
Return procedure for MAX335CNG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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