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Analog Devices Inc./Maxim Integrated MAX395CNG+
- Part No.:
- MAX395CNG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX395CNG+.pdf
- Description:
- IC SWITCH SPST-NOX8 100OHM 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:260
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Product details
Overview
MAX395CNG+ from Maxim Integrated is an 8-channel, serially controlled, single-pole/single-throw (SPST) analog switch IC with rail-to-rail signal handling, 100Ω max on-resistance (±5V supplies), 5Ω max channel-to-channel on-resistance match, and <0.1nA off-leakage at +25°C. It operates from ±2.7V to ±8V dual supplies or +2.7V to +16V single supply, and is used in precision data-acquisition multiplexing and industrial control signal routing.
For engineers reviewing the MAX395CNG+ datasheet, MAX395CNG+ pinout, MAX395CNG+ application, or MAX395CNG+ equivalent, this page delivers verified electrical specs, SPI/Microwire-compatible timing, daisy-chain capability, reset-controlled power-up state, and TTL/CMOS logic compatibility - all critical for low-distortion analog switching in ATE and avionics systems.
Technical Context
The MAX395CNG+ implements an 8-bit shift register interface compatible with SPI™ (CPOL=0, CPHA=0), QSPI™, and Microwire™ standards. Data is clocked in on the rising edge of SCLK while CS is low, and switch states update synchronously on the rising edge of CS - independent of SCLK phase - ensuring deterministic latch behavior.
Each of the eight SPST switches features bidirectional conduction, matched on-resistance (<5Ω), flat on-resistance (<10Ω over ±3V signal range), and >2kV ESD protection. The device supports daisy-chaining via DOUT-to-DIN cascading and includes asynchronous RESET to force all switches OFF and clear internal registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation and voltage drop in precision analog paths. |
| On-Resistance Match | 5Ω max between channels - enables consistent gain/attenuation across multiplexed signal paths. |
| Off-Leakage Current | 0.1nA max at +25°C - preserves high-impedance node integrity in sensitive sensor or reference circuits. |
| Supply Range | ±2.7V to ±8V dual or +2.7V to +16V single - supports wide-range industrial and legacy system integration. |
| Switch Turn-On/Off Time | 200–400ns typical - enables fast channel switching in high-throughput data acquisition. |
| Crosstalk / Off Isolation | <−90dB at 100kHz - prevents signal coupling between active and inactive channels in dense routing. |
| Logic Compatibility | 0.8V–2.4V thresholds with ±5V or +5V supply - interoperates directly with TTL and CMOS microcontrollers without level-shifting. |
Pinout & Package
MAX395CNG+ is housed in a 24-pin narrow plastic DIP package (0°C to +70°C operating range), with through-hole mounting and industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Rising-edge-triggered clock for synchronous data shifting into internal 8-bit register. |
| 2 V+ | Positive analog supply | Sets upper analog signal limit; must be ≥2.7V (single) or ≥±2.7V (dual); powers internal CMOS switches. |
| 3 DIN | Serial data input | Accepts 8-bit control word; bit D7 controls NO7/COM7, D0 controls NO0/COM0. |
| 4 GND | Digital ground reference | Reference for logic inputs only; analog signals are referenced solely between V+ and V−. |
| 5–12, 14–20 NO0–NO7 | Normally open switch terminals | Bidirectional analog I/O pins; interchangeable with COMx; no polarity constraint on signal flow. |
| 6–12, 13, 15–19 COM0–COM7 | Common switch terminals | Paired with corresponding NOx; each COMx/NOx pair forms one independent SPST switch. |
| 21 V− | Negative analog supply | Sets lower analog signal limit; connect to GND for single-supply operation (V− = 0V). |
| 22 DOUT | Serial data output | Shift-register output (D7 delayed by 8 clocks); enables daisy-chaining multiple MAX395 devices. |
| 23 RESET | Asynchronous reset input | Active-low; forces all switches OFF and clears internal shift register regardless of CS/SCLK state. |
| 24 CS | Chip-select input | Active-low; latches shifted data into switch control register on rising edge; inhibits updates when high. |
Key Features
| Feature | Design Value |
|---|---|
| SPI/QSPI/Microwire-compatible interface | Direct connection to standard microcontroller serial ports without protocol translation or glue logic. |
| Rail-to-rail analog signal handling | Supports full-swing signals from V− to V+, eliminating clipping in ±5V or +12V systems. |
| Break-before-make switching | Guaranteed tBBM ≥15ns prevents momentary short-circuit during channel transitions. |
| Pin compatibility with MAX335 | Drop-in replacement for legacy designs using MAX335, simplifying upgrade paths without PCB changes. |
| 24-pin DIP package with >2kV ESD protection | Enables robust prototyping and industrial deployment in unshielded environments. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals from dozens of sensors into a single ADC channel. IC Role / Device Role / Timing Role: 8-channel SPST analog switch providing low-leakage, low-on-resistance signal path selection under microcontroller serial control. Use Value: Enables high-accuracy DC measurements with <0.1nA leakage preserving sensor bias integrity and 100Ω RON minimizing gain error in instrumentation amplifiers. |
Use Scenario: Routing calibrated reference voltages and DUT outputs to precision measurement units in semiconductor test handlers. IC Role / Device Role / Timing Role: Serially addressed analog switch supporting fast, repeatable channel sequencing via daisy-chained SCLK/DIN/CS. Use Value: Achieves sub-400ns turn-on/off times and <−90dB crosstalk, ensuring signal fidelity during high-speed parametric testing. |
| Avionics Signal Management | Audio Signal Routing |
Use Scenario: Selecting between redundant flight control sensor inputs (e.g., airspeed, angle-of-attack) in DO-254-compliant systems. IC Role / Device Role / Timing Role: Fail-safe analog switch with asynchronous RESET and guaranteed power-up OFF state for functional safety compliance. Use Value: Delivers deterministic initialization and <5Ω RON matching across channels - critical for voting logic and sensor fusion accuracy. |
Use Scenario: Programmable routing of line-level audio signals between microphone preamps, DSPs, and output drivers in studio interfaces. IC Role / Device Role / Timing Role: Bidirectional SPST switch enabling transparent analog signal pass-through with no DC bias dependency. Use Value: Flat 10Ω RON variation over ±3V range and <−90dB isolation prevent tone coloration and crosstalk in multi-channel audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX335CNG+ | Pin-compatible 8-channel SPST switch but with parallel (not serial) control interface; no shift register or DOUT. | Requires 8 GPIOs instead of 3-wire serial bus; unsuitable for space-constrained or high-channel-count systems. | Select MAX335CNG+ only when parallel control simplifies firmware or when daisy-chaining is unnecessary. |
| ADG708BRUZ | 8-channel SPST CMOS switch with SPI interface, but rated for +3.3V/±5V only; 4Ω RON match, 0.5nA leakage at +25°C. | Limited to lower supply ranges; lacks −55°C to +125°C extended temp variants; no RESET pin. | Choose ADG708BRUZ for compact TSSOP-16 footprint and lower RON in 3.3V systems, but verify leakage and temperature requirements. |
Compared with MAX335CNG+, MAX395CNG+ saves board space and GPIOs via serial control and enables scalable channel expansion; compared with ADG708BRUZ, it offers wider supply flexibility, integrated RESET, and superior leakage performance at elevated temperatures.
Availability
MAX395CNG+ is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, avionics signal management, and audio signal routing requiring stable component supply and long-term manufacturability.
Supply support for MAX395CNG+ 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) is a leader in high-performance analog, mixed-signal, and power management ICs, serving industrial, automotive, communications, and computing markets.
The MAX395 belongs to Maxim's precision analog switch product line, engineered for low-leakage, low-RON, and serially controllable signal routing in data-acquisition and test systems where reliability and signal integrity are critical.
FAQ
What is the maximum supply voltage range supported by the MAX395CNG+?
The MAX395CNG+ supports dual supplies from ±2.7V to ±8V or a single supply from +2.7V to +16V. Absolute maximum ratings allow V+ up to +17V and V− down to −17V, but continuous operation beyond ±8V or +16V is not specified. Operation within the recommended ranges ensures guaranteed RON, leakage, and timing performance per the datasheet.
Does the MAX395CNG+ require external pull-up resistors on its digital control lines?
No, the MAX395CNG+ does not require external pull-ups on SCLK, DIN, CS, or RESET. Its digital inputs have defined TTL/CMOS-compatible thresholds (0.8V low, 2.4V high) and are internally biased. Pull-ups may be added for noise immunity in noisy environments, but they are not necessary for basic functionality or logic-level compliance.
Can the MAX395CNG+ be used in a single-supply +3.3V system?
Yes - the MAX395CNG+ operates down to +2.7V single supply. At +3.3V, RON increases to ~600Ω (typical), VIH lowers to 2.4V, and leakage remains below 0.1nA at +25°C. Logic thresholds remain compatible with 3.3V CMOS, and timing parameters (e.g., tON ≈ 800ns) are characterized for this condition, making it viable for low-voltage portable instrumentation.
How does the RESET pin function on the MAX395CNG+?
The RESET pin on the MAX395CNG+ is asynchronous and active-low. Driving RESET low forces all eight switches to the OFF state and clears the internal 8-bit shift register to zero - regardless of CS or SCLK state. This provides deterministic power-up behavior and emergency channel isolation. RESET must not exceed V+ or go below GND.
Is the MAX395CNG+ pin-compatible with other Maxim analog switches?
Yes - the MAX395CNG+ is explicitly pin-compatible with the industry-standard MAX335. Both share identical 24-pin DIP pinouts, supply connections, and analog terminal assignments (NOx/COMx). However, MAX335 uses parallel control (8-bit bus), whereas MAX395CNG+ uses serial control (SCLK/DIN/CS/RESET), so firmware and PCB layout differ despite mechanical compatibility.
MAX395CNG+ 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):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm (Max)
- Voltage - Supply, Single (V+):
- 2.7V ~ 16V
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 400ns, 400ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- 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:
- Through Hole
- Supplier Device Package:
- 24-PDIP
MAX395CNG+ FAQ
1.How can I place an order for MAX395CNG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX395CNG+ 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 MAX395CNG+ reliable?
The price and inventory of MAX395CNG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX395CNG+ is usually 5 days.
3.What payment methods are accepted for MAX395CNG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX395CNG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX395CNG+?
MAX395CNG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX395CNG+ 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 MAX395CNG+?
For technical support, including MAX395CNG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX395CNG+ requirements.
6.How does Aetrix verify that MAX395CNG+ is sourced from the original manufacturer or authorized distributors?
All MAX395CNG+ 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 MAX395CNG+ meets industry standards.
7.What is the process for return or replacement of MAX395CNG+?
All MAX395CNG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX395CNG+, 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 MAX395CNG+ part is unused and in its original packaging.
Return procedure for MAX395CNG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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