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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:3,529
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Product details
Overview
The 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 - used in avionics signal routing and serial data acquisition systems.
For engineers reviewing the MAX335CNG datasheet, MAX335CNG pinout, MAX335CNG application, or MAX335CNG equivalent, this page delivers verified technical context, real-world timing behavior, switch leakage specs at temperature extremes, SPI interface timing compliance (2.1MHz max SCLK), and precise package-mapped pin functions for layout and firmware integration.
Technical Context
The MAX335CNG implements an 8-bit shift register synchronized to SCLK's rising edge, with CS-controlled latching on its rising edge only when SCLK is low - supporting Motorola SPI Mode 0 (CPOL = 0, CPHA = 0). Its internal translator circuitry enables TTL-level logic compatibility via VL = +5V while maintaining full analog swing across V+ and V− rails.
Each of the eight SPST switches features symmetrical conduction, break-before-make delay ≤25ns, off-isolation ≥90dB at 100kHz, and channel-to-channel crosstalk ≤−100dB - enabling high-fidelity multiplexing in mixed-signal test equipment and precision sensor front-ends where signal integrity and channel independence are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports rail-to-rail signal switching without clipping in ±15V systems |
| On-Resistance (RON) | 100Ω typ - ensures minimal voltage drop and power loss in low-current analog paths |
| Switch Leakage (NO/COM OFF) | ±1nA max at +25°C - preserves signal accuracy in high-impedance sensor or reference circuits |
| SCLK Max Frequency | 2.1MHz - enables fast configuration updates (≤3.8µs per 8-bit write) in real-time control loops |
| Turn-On/Off Time | 200–500ns - meets timing requirements for high-speed data acquisition sampling control |
| Off Isolation | ≥90dB at 100kHz - prevents cross-talk between active and inactive channels in dense routing |
| Digital Feedthrough | 100nV·sec - quantifies clock-induced transient coupling; mitigated by internal SCLK hysteresis (100mV) |
Pinout & Package
MAX335CNG uses a 24-pin narrow plastic DIP package (0.300" width), with through-hole mounting, 2.54mm pitch, and industry-standard pin 1 marking. Pin 1 is SCLK; pin 24 is CS; pins 5–20 carry NOx/COMx switch terminals in interleaved order.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Rising-edge synchronous shift register clock; 2.1MHz max; 100mV hysteresis reduces noise sensitivity |
| 2 V+ | Positive supply | Accepts +4.5V to +20V; powers analog switches and internal level translators |
| 3 DIN | Serial data input | 8-bit shift register input; MSB-first; compatible with SPI/Microwire master outputs |
| 4 GND | Ground reference | Logic and analog ground return; separate from V− but referenced to it in bipolar operation |
| 5–20 NO0–NO7 / COM0–COM7 | Analog switch terminals | Interleaved SPST pairs (NO0/COM0, NO1/COM1, ..., NO7/COM7); bidirectional, symmetric conduction |
| 21 V− | Negative supply | Accepts −4.5V to −20V; defines lower rail for analog signal range and internal bias |
| 22 DOUT | Serial data output | Shift register Q7 output; enables daisy-chaining multiple MAX335CNG devices with single SCLK/DIN |
| 23 VL | Logic supply/reset | +4.5V to +V+; sets TTL-compatible thresholds (VIH = 2.4V @ VL = +5V); <0.8V resets shift register |
| 24 CS | Chip select | Active-low latch enable; rising edge (with SCLK low) updates switch states from shift register |
Key Features
| Feature | Design Value |
|---|---|
| SPI-compatible serial interface | 3-wire (SCLK/DIN/CS) with DOUT echo; supports Motorola SPI Mode 0 for direct MCU integration without glue logic |
| Daisy-chain capability | Single SCLK/DIN stream configures multiple MAX335CNGs; CS rise updates all simultaneously - simplifies multi-channel system wiring |
| Rail-to-rail analog switching | ±15V signal range with constant RON - eliminates need for external level-shifting in ±15V op-amp or DAC interfaces |
| Power-up reset default | All switches off and shift register zeroed at power-on - prevents undefined analog path states during boot |
| VL-based hardware reset | Pulsing VL below 0.8V forces all switches open and clears shift register - enables safe reinitialization without power cycle |
Applications
| Avionics Signal Routing | Serial Data Acquisition |
|---|---|
Use Scenario: Selecting discrete sensor inputs (e.g., accelerometers, gyros) into a shared ADC channel in flight control units. IC Role / Device Role / Timing Role: SPST switch array controlled by microcontroller SPI to route analog signals under deterministic timing. Use Value: 200ns turn-on time and 90dB off-isolation prevent cross-channel interference during rapid sensor polling sequences. | Use Scenario: Multiplexing 8 thermocouple or strain gauge outputs into a single high-resolution sigma-delta ADC in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch providing low-leakage (±1nA), low-RON (100Ω) paths synchronized to acquisition trigger. Use Value: ±15V analog range accommodates unconditioned sensor outputs; daisy-chained DOUT allows expansion beyond 8 channels without additional SPI lines. |
| Networking Test Equipment | High-Voltage Process Control |
Use Scenario: Reconfiguring RF front-end signal paths (e.g., antenna selection, filter bank routing) in automated network analyzers. IC Role / Device Role / Timing Role: Low-crosstalk (−100dB) SPST switch enabling clean isolation between measurement and reference paths. Use Value: Break-before-make delay ≤25ns prevents momentary shorting during path reconfiguration - critical for stable calibration measurements. | Use Scenario: Controlling high-voltage analog feedback loops (e.g., laser diode bias, piezo actuator drive) in semiconductor manufacturing tools. IC Role / Device Role / Timing Role: Robust SPST switch rated for ±20V supplies and ±15V signal swings, interfaced via isolated SPI. Use Value: 100Ω RON stability over temperature ensures consistent loop gain; VL reset provides fail-safe shutdown during fault conditions. |
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, 4.7Ω RON, parallel 3-wire interface (not serial) | Requires 8-bit parallel control bus instead of SPI; faster switching (100ns tON) but higher pin count | Choose ADG1408BRUZ when low on-resistance and parallel control are prioritized over board space and serial simplicity |
| MAX4617ESA+ | 8-channel SPST, ±20V supply, 120Ω RON, SPI interface, but no DOUT daisy-chain capability | Lacks DOUT pin - limits multi-device cascading; smaller SO-8 package vs. DIP-24 | Choose MAX4617ESA+ when compact surface-mount footprint is required and single-device use suffices |
Compared with ADG1408BRUZ and MAX4617ESA+, the MAX335CNG uniquely combines SPI control, daisy-chain expandability, and DIP-24 through-hole reliability - making it optimal for legacy avionics upgrades and modular test instrumentation where layout flexibility and multi-unit synchronization matter.
Availability
MAX335CNG is available at Aetrix Electronics and suitable for avionics signal routing, serial data acquisition, and high-voltage process control requiring stable component supply across extended temperature ranges and long production lifecycles.
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 ICs for demanding industrial, automotive, and aerospace applications.
The MAX335CNG belongs to Maxim's high-voltage serial-switch product line, engineered specifically for robust signal routing in environments requiring wide supply ranges, low leakage, and deterministic digital control - not general-purpose switching.
FAQ
What is the maximum SCLK frequency supported by the MAX335CNG?
The MAX335CNG supports a maximum SCLK frequency of 2.1MHz, with minimum high/low times of 190ns each. This allows full 8-bit configuration in under 3.8µs. The timing is guaranteed across the full 0°C to +70°C operating range, and the internal clock translator ensures reliable sampling even with moderate signal edge rates (2µs allowable rise/fall time).
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 digital inputs have CMOS-compatible thresholds (VIH = 2.4V @ VL = +5V; VIL = 0.8V) and low input current (±1µA max), allowing direct connection to standard MCU GPIOs. Internal design ensures stable logic levels without external biasing under normal operating conditions.
Can the MAX335CNG operate from a single +15V supply?
Yes, the MAX335CNG can operate from a single +15V supply by connecting V− to ground and setting VL = V+ = +15V. In this configuration, the analog signal range becomes 0V to +15V (rail-to-rail), and the device retains full SPI functionality. However, the VL reset feature is disabled when VL = V+, so hardware reset must be handled externally or via power cycling.
How does the MAX335CNG handle power-up initialization?
Upon power-up, the MAX335CNG automatically resets its internal 8-bit shift register to all zeros and forces all eight SPST switches to the OFF state - regardless of supply ramp rate or sequence. This behavior is guaranteed by internal power-on-reset circuitry and requires no external intervention, ensuring predictable analog path states during system boot.
Is the MAX335CNG pin-compatible with the DG211 quad analog switch?
No, the MAX335CNG is not pin-compatible with the DG211. While the MAX335CNG is functionally equivalent to two DG211s (i.e., eight SPST switches), it uses a 24-pin DIP package with serial interface pins (SCLK, DIN, DOUT, CS, VL), whereas the DG211 is a 16-pin DIP with parallel control. Layout redesign and firmware changes are required to replace DG211-based designs with MAX335CNG.
MAX335CNG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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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