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Analog Devices Inc./Maxim Integrated MAX395EWG+
- Part No.:
- MAX395EWG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX395EWG+.pdf
- Description:
- IC SW SPST-NOX8 100OHM 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
MAX395EWG+ 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 audio signal routing, ATE equipment, and industrial control systems.
For engineers reviewing the MAX395EWG+ datasheet, MAX395EWG+ pinout, MAX395EWG+ application, or MAX395EWG+ equivalent, key selection considerations include its SPI/QSPI/Microwire-compatible 3-wire serial interface, daisy-chain capability via DOUT, asynchronous RESET input, TTL/CMOS logic compatibility at +5V or ±5V, and guaranteed 2kV ESD protection per Method 3015.7.
Technical Context
The MAX395EWG+ implements an 8-bit shift register architecture synchronized to SCLK's rising edge, with data latched on the rising edge of CS. Its internal latch drives eight independent SPST switches, each with bidirectional analog conduction and matched RON across channels.
It supports daisy-chaining via DOUT output, enabling cascaded configuration of multiple devices with simultaneous update on CS high transition. The device features asynchronous RESET that forces all switches open and clears the shift register regardless of clock state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures low insertion loss and minimal signal distortion in precision analog paths |
| RON Match | 5Ω max between channels - enables consistent gain/attenuation across multiplexed signal paths |
| Off-Leakage Current | 0.1nA max at +25°C - preserves DC accuracy in high-impedance sensor or reference circuits |
| Analog Signal Range | Rail-to-rail (V− to V+) - supports full dynamic range operation without level-shifting circuitry |
| Serial Interface | SPI/QSPI/Microwire-compatible 3-wire (SCLK/DIN/CS) - simplifies integration with standard microcontroller peripherals |
| ESD Protection | >2kV per Method 3015.7 - enhances robustness in handling-sensitive test and industrial environments |
| Supply Range | ±2.7V to ±8V dual or +2.7V to +16V single - enables flexible power architecture in mixed-signal systems |
Pinout & Package
MAX395EWG+ is housed in a 24-pin Wide SO (SOIC-W) package with 300-mil body width and standard gull-wing lead form. Pin 1 is marked by a notch or dot; pin numbering follows counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK (Pin 1) | Serial clock input | Synchronizes DIN data sampling on rising edge; defines timing for shift register operation |
| V+ (Pin 2) | Positive analog supply | Sets upper voltage limit for analog signals; powers internal CMOS switch drivers |
| DIN (Pin 3) | Serial data input | Accepts 8-bit control word; bit D7 controls NO7/COM7, D0 controls NO0/COM0 |
| GND (Pin 4) | Digital ground reference | Reference for digital logic inputs; isolated from analog signal path |
| NO0–NO7 (Pins 5,7,9,11,14,16,18,20) | Normally open switch terminals | Bidirectional analog I/O; interchangeable with COM pins for flexible routing |
| COM0–COM7 (Pins 6,8,10,12,13,15,17,19) | Common switch terminals | Bidirectional analog I/O; paired with NOx to form SPST switch path |
| V− (Pin 21) | Negative analog supply | Sets lower voltage limit for analog signals; tied to GND for single-supply use |
| DOUT (Pin 22) | Serial data output | Shift register output delayed by 8 clocks; enables daisy-chaining of multiple MAX395EWG+ |
| RESET (Pin 23) | Asynchronous reset input | Drives all switches OFF and clears shift register when pulled low |
| CS (Pin 24) | Chip-select input | Latches 8-bit control word on rising edge; disables serial input when high |
Key Features
| Feature | Design Value |
|---|---|
| 8 independently controllable SPST switches | Enables flexible signal routing in data-acquisition and test systems without external decoding logic |
| Rail-to-rail analog signal handling | Eliminates need for external level-shifting circuitry when interfacing with ±10V industrial sensors or audio line-level signals |
| Pin compatibility with MAX335 | Allows drop-in replacement in legacy designs using industry-standard 24-pin SO footprint |
| Daisy-chain capable via DOUT | Reduces GPIO count and simplifies firmware when controlling >8 switch channels across multiple ICs |
| TTL/CMOS logic thresholds (0.8V/2.4V) | Ensures reliable interface with both 3.3V and 5V microcontrollers without level translators |
Applications
| Audio Signal Routing | ATE Equipment |
|---|---|
Use Scenario: Switching between multiple microphone inputs or speaker outputs in professional audio mixers and broadcast gear. IC Role / Device Role / Timing Role: SPST analog switch providing low-distortion, low-crosstalk signal path selection under microcontroller serial control. Use Value: 100Ω RON and <-90dB crosstalk preserve audio fidelity; rail-to-rail operation supports ±5V line-level signals without clipping. | Use Scenario: Multiplexing test signals between DUTs and measurement instruments in automated test systems. IC Role / Device Role / Timing Role: Serially addressed analog switch enabling fast, repeatable channel selection during high-speed parametric testing. Use Value: 200ns typical turn-on time and <0.1nA leakage ensure accurate DC measurements and rapid settling in precision ATE. |
| Industrial Process Systems | Avionics Signal Management |
Use Scenario: Routing sensor outputs (RTDs, thermocouples) to shared ADC channels in PLC backplanes and distributed I/O modules. IC Role / Device Role / Timing Role: Low-leakage, high-voltage-tolerant analog switch isolating sensitive measurement paths in noisy factory environments. Use Value: ±8V dual-supply operation accommodates industrial sensor excitation voltages; >2kV ESD rating withstands field-handling stress. | Use Scenario: Configuring redundant flight-control signal paths and sensor cross-checking in airborne avionics units. IC Role / Device Role / Timing Role: Radiation-tolerant (E-grade) analog switch supporting fail-safe reconfiguration of critical analog monitoring circuits. Use Value: -40°C to +85°C operating range and guaranteed RON match meet DO-160 environmental requirements for airborne electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX395CWG+ | 0°C to +70°C temperature range; identical pinout, electrical specs, and serial interface | Not qualified for extended industrial or automotive ambient conditions | Select MAX395CWG+ only for commercial-grade applications where ambient stays within 0–70°C |
| ADG1408BRUZ | 8-channel SPST, but uses parallel 3-wire interface (not serial); 4.7Ω RON, higher supply current, no daisy-chain support | Lacks serial programming and DOUT chaining; requires more GPIOs and PCB space | Choose ADG1408BRUZ when deterministic parallel control and ultra-low RON outweigh serial interface benefits |
Compared with MAX395CWG+, the MAX395EWG+ extends operational reliability to -40°C to +85°C while retaining full pin and functional compatibility; versus ADG1408BRUZ, it trades parallel simplicity for reduced GPIO count and scalable multi-device control via daisy-chained serial interface.
Availability
MAX395EWG+ is available at Aetrix Electronics and suitable for audio signal routing, ATE equipment, and industrial process-systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX395EWG+ 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, communications, computing, and consumer applications.
The MAX395 product line delivers serially controlled analog switching solutions optimized for low-leakage, rail-to-rail performance, and robust serial configurability in data-acquisition and test instrumentation systems.
FAQ
What is the operating temperature range of the MAX395EWG+?
The MAX395EWG+ is rated for operation from -40°C to +85°C, making it suitable for industrial and extended-temperature applications. This specification is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet. The 'E' grade designation explicitly denotes this extended temperature range, distinguishing it from the 'C' grade (0°C to +70°C) and 'M' grade (-55°C to +125°C) variants of the MAX395 family. All electrical characteristics in the datasheet are guaranteed across this full -40°C to +85°C range.
Is the MAX395EWG+ pin compatible with the MAX335?
Yes, the MAX395EWG+ is pin compatible with the industry-standard MAX335. This is explicitly stated in the Features section of the datasheet: "Pin Compatible with Industry-Standard MAX335." Both devices share identical 24-pin SO packaging and matching pin functions-including SCLK, DIN, CS, DOUT, RESET, V+, V−, GND, and the eight NO/COM pairs-enabling direct replacement in existing MAX335 layouts without PCB modification.
How does the serial interface of the MAX395EWG+ work?
The MAX395EWG+ uses a 3-wire SPI/QSPI/Microwire-compatible interface with SCLK, DIN, and CS. Data is shifted in on the rising edge of SCLK while CS is low; an 8-bit word configures each of the eight SPST switches. On the rising edge of CS, the shift register contents latch to update all switches simultaneously. DOUT provides the serial output for daisy-chaining multiple MAX395EWG+ devices, and RESET offers asynchronous initialization of all switches to OFF state.
What supply voltage ranges does the MAX395EWG+ support?
The MAX395EWG+ supports dual supplies from ±2.7V to ±8V and single supplies from +2.7V to +16V. This flexibility allows operation in bipolar signal chains (e.g., ±5V audio systems) or unipolar industrial interfaces (e.g., +12V sensor excitation). The analog signal range always spans from V− to V+, enabling true rail-to-rail conduction. These specifications are verified in the Absolute Maximum Ratings and Electrical Characteristics tables for dual- and single-supply configurations.
Can the MAX395EWG+ be used in multiplexer configurations?
Yes, the MAX395EWG+ can be configured as an 8×1 multiplexer by connecting all COMx pins together as the output and using NO0–NO7 as inputs. It also supports dual 4×2 differential multiplexing by grouping COM0–COM3 and COM4–COM7 as separate outputs. The datasheet provides explicit guidance in the Applications Information section, including fast-mode programming techniques where channel selection occurs on each clock pulse instead of every eight cycles.
MAX395EWG+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
MAX395EWG+ FAQ
1.How can I place an order for MAX395EWG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX395EWG+ 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 MAX395EWG+ reliable?
The price and inventory of MAX395EWG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX395EWG+ is usually 5 days.
3.What payment methods are accepted for MAX395EWG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX395EWG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX395EWG+?
MAX395EWG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX395EWG+ 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 MAX395EWG+?
For technical support, including MAX395EWG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX395EWG+ requirements.
6.How does Aetrix verify that MAX395EWG+ is sourced from the original manufacturer or authorized distributors?
All MAX395EWG+ 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 MAX395EWG+ meets industry standards.
7.What is the process for return or replacement of MAX395EWG+?
All MAX395EWG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX395EWG+, 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 MAX395EWG+ part is unused and in its original packaging.
Return procedure for MAX395EWG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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