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Analog Devices Inc./Maxim Integrated MAX395EAG
- Part No.:
- MAX395EAG
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX395EAG.pdf
- Description:
- IC SW SPST-NOX8 100OHM 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,377
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Product details
Overview
The MAX395EAG from Maxim Integrated is an 8-channel, serially controlled, single-pole/single-throw (SPST) CMOS analog switch 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 serial data-acquisition systems requiring low crosstalk and high off-isolation.
For engineers reviewing the MAX395EAG datasheet, MAX395EAG pinout, MAX395EAG application, or MAX395EAG equivalent, key selection criteria include its SPI/QSPI/Microwire-compatible 3-wire interface, daisy-chainable DOUT, asynchronous RESET, TTL/CMOS logic compatibility at +5V/±5V, and guaranteed 100Ω RON flatness over ±3V signal range.
Technical Context
The MAX395EAG implements an 8-bit shift register architecture synchronized to SCLK's rising edge, with latch update triggered by the rising edge of CS - fully compliant with SPI Mode 0 (CPOL=0, CPHA=0) and Microwire protocols. Its internal logic drives eight independent SPST switches via parallel register translation, enabling simultaneous channel configuration upon CS assertion.
All NO/COM terminals are bidirectional and electrically interchangeable; each switch supports full rail-to-rail analog voltage swing between V+ and V−, with leakage currents specified down to −55°C and up to +125°C. The device integrates >2kV HBM ESD protection and features break-before-make timing (15ns typical) to prevent signal shorting during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation and gain error in precision analog paths |
| RON match | 5Ω max between channels - enables accurate channel-to-channel signal routing without gain mismatch |
| Off-leakage current | 0.1nA max at +25°C - preserves high-impedance node integrity in sensor front-ends and sample-hold circuits |
| Analog signal range | Rail-to-rail: (V− − 2V) to (V+ + 2V) - supports full dynamic range operation across dual or single supply configurations |
| Supply range | ±2.7V to ±8V dual or +2.7V to +16V single - enables flexible integration in mixed-voltage industrial and avionics systems |
| Channel crosstalk | <−90dB at 100kHz - prevents interference between adjacent switched signals in dense multiplexer layouts |
| Off isolation | −90dB at 100kHz - maintains signal integrity when unused channels are isolated from sensitive analog nodes |
Pinout & Package
MAX395EAG is housed in a 24-pin narrow plastic DIP package (0.300" wide), RoHS-compliant and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Synchronizes DIN data into 8-bit shift register on rising edge; compatible with SPI/QSPI/Microwire timing |
| 2 V+ | Positive analog supply | Sets upper analog voltage limit; must be ≥2.7V (single) or ≥±2.7V (dual); powers internal CMOS switches |
| 3 DIN | Serial data input | Accepts 8-bit control word; D7 is MSB and first bit shifted in; unaffected by CS when high |
| 4 GND | Digital ground reference | Reference for logic inputs only; analog signals referenced solely to V+ and V−, not GND |
| 5–12, 14–20 NO0–NO7 | Normally open switch terminals | Bidirectional analog I/O; interchangeable with COMx; no polarity constraint on signal direction |
| 6–12, 13–19 COM0–COM7 | Common switch terminals | Bidirectional analog I/O; paired with corresponding NOx to form SPST switch; identical electrical role to NOx |
| 21 V− | Negative analog supply | Sets lower analog voltage limit; connect to GND for single-supply use; enables true bipolar signal handling |
| 22 DOUT | Serial data output | Shift register Q7 output; enables daisy-chaining multiple MAX395EAG devices without external logic |
| 23 RESET | Asynchronous reset input | Drives all switches OFF and clears shift register to 0 when pulled low; requires no clock or CS timing |
| 24 CS | Chip-select input | Active-low control: latches 8-bit data into parallel register on rising edge; inhibits DIN/SCLK during high state |
Key Features
| Feature | Design Value |
|---|---|
| SPI/QSPI/Microwire-compatible interface | 3-wire serial protocol with CPOL=0, CPHA=0 support - eliminates need for parallel address/data buses in space-constrained designs |
| Daisy-chainable DOUT | Q7 output enables cascading of unlimited MAX395EAG units using single SCLK/DIN/CS lines - reduces microcontroller GPIO count and PCB routing complexity |
| Rail-to-rail analog switching | Signal path operates from V− to V+ with no headroom loss - preserves full ADC/DAC dynamic range in data-acquisition signal chains |
| Asynchronous hardware RESET | Guaranteed power-up safe state (all switches OFF) and deterministic recovery from fault conditions - critical for system-level safety compliance |
| ±2.7V to ±8V / +2.7V to +16V supply flexibility | Single-part support for both bipolar instrumentation and unipolar industrial control rails - simplifies BOM and inventory management |
| >2kV HBM ESD protection | Robust handling of electrostatic discharge during board assembly and field operation - reduces failure rate in automated test equipment environments |
Applications
| Serial Data-Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing 8 sensor outputs (e.g., thermocouples, RTDs) into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: Precision SPST analog switch providing low-RON, low-leakage, and high off-isolation signal routing under microcontroller serial control. Use Value: Enables 0.01% gain accuracy across channels due to ≤5Ω RON matching and <−90dB crosstalk, minimizing calibration overhead. |
Use Scenario: Routing analog setpoint and feedback signals in PLC I/O modules with hot-swap capability. IC Role / Device Role / Timing Role: Fault-tolerant analog switch with asynchronous RESET and rail-to-rail operation supporting ±10V industrial signal standards. Use Value: Guarantees safe default-OFF state on power-up or watchdog timeout, preventing erroneous actuator activation. |
| Avionics Signal Management | Automated Test Equipment (ATE) |
Use Scenario: Configurable signal path selection in flight-control sensor interface units operating across −55°C to +125°C. IC Role / Device Role / Timing Role: High-reliability SPST switch qualified for extended temperature range with verified leakage performance at extremes. Use Value: Maintains <10nA off-leakage at +85°C and <5nA at +125°C, preserving signal fidelity in critical flight-critical analog monitoring. |
Use Scenario: Channel switching in multi-site parametric test systems requiring fast, repeatable analog path reconfiguration. IC Role / Device Role / Timing Role: Serially controlled switch enabling synchronized channel updates across multiple DUTs via daisy-chained DOUT. Use Value: Achieves 200ns typical turn-on time and 15ns break-before-make delay - minimizes test cycle time and avoids transient shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-channel serial SPST switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX395CNG | 0°C to +70°C temperature range; same pinout, electrical specs, and serial interface | Restricted to commercial-grade environments; unsuitable for industrial or extended-temp deployments | Select MAX395CNG only for cost-sensitive, non-extended-temperature applications where full −40°C to +85°C operation is unnecessary |
| MAX335EAG | Pin-compatible but lacks serial interface; uses parallel 3-bit address + 1-bit enable control; higher RON (120Ω typ) | Requires more MCU GPIOs; no daisy-chaining; simpler control but less scalable in multi-switch systems | Choose MAX335EAG when deterministic parallel access is preferred over serial bus efficiency and layout density is not constrained |
Compared with MAX395CNG and MAX335EAG, the MAX395EAG uniquely delivers extended temperature operation (−40°C to +85°C), serial bus scalability via DOUT daisy-chaining, and tighter RON matching - making it optimal for industrial, avionics, and ATE systems demanding reliability, density, and configurability.
Availability
MAX395EAG is available at Aetrix Electronics and suitable for serial data-acquisition systems, industrial process-control modules, and avionics signal-routing applications requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C performance.
Supply support for MAX395EAG 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing markets.
The MAX395EAG belongs to Maxim's precision analog switch product line, designed specifically for serially controlled, low-distortion, high-isolation signal routing in data-acquisition, test instrumentation, and real-time control systems.
FAQ
What supply voltage ranges does the MAX395EAG support?
The MAX395EAG supports dual supplies from ±2.7V to ±8V or a single supply from +2.7V to +16V. This flexibility allows use in both bipolar instrumentation and unipolar industrial control systems. Operation at ±5V yields 100Ω max on-resistance, while +5V single-supply operation results in 125Ω max RON. The MAX395EAG maintains rail-to-rail analog signal handling across all supported supply configurations.
How does the MAX395EAG handle serial communication with multiple devices?
The MAX395EAG supports daisy-chaining via its DOUT pin, which outputs the Q7 bit of its internal shift register. By connecting DOUT of one MAX395EAG to DIN of the next and tying all CS and SCLK lines together, a single microcontroller can configure multiple devices with one continuous 8×N-bit stream. On the rising edge of CS, all N devices simultaneously latch their respective 8-bit words - enabling synchronized switching across complex signal matrices.
Is the MAX395EAG pin-compatible with other industry-standard analog switches?
Yes, the MAX395EAG is pin-compatible with the MAX335 series, including MAX335EAG. Both share identical 24-pin narrow DIP pinouts and common terminal assignments (e.g., NO0–NO7, COM0–COM7, SCLK, DIN, CS). However, the MAX395EAG replaces parallel address decoding with a serial interface - meaning software control differs significantly despite mechanical and electrical pin equivalence.
What is the function of the RESET pin on the MAX395EAG?
The RESET pin on the MAX395EAG provides asynchronous, hardware-level control: driving it low forces all eight switches to the OFF state and resets the internal 8-bit shift register to zero, regardless of SCLK or CS state. This ensures a known safe condition at power-up, after brownout, or during system fault recovery. RESET must remain within GND to V+ and is not clamped - exceeding those limits may damage the device.
Can the MAX395EAG be used to build multiplexer or SPDT configurations?
Yes, the MAX395EAG supports multiple topologies: as an 8×1 multiplexer (tie COM0–COM7 together), dual 4×2 differential multiplexer (group COM0–COM3 and COM4–COM7), or quad SPDT (cross-connect COM0/NO1, COM2/NO3, etc.). Its bidirectional NO/COM terminals and identical electrical characteristics per channel ensure consistent performance across all configurations - validated in Maxim's application notes for multiplexer and SPDT implementations using the MAX395EAG.
MAX395EAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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-SSOP
MAX395EAG FAQ
1.How can I place an order for MAX395EAG through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX395EAG 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 MAX395EAG reliable?
The price and inventory of MAX395EAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX395EAG is usually 5 days.
3.What payment methods are accepted for MAX395EAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX395EAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX395EAG?
MAX395EAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX395EAG 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 MAX395EAG?
For technical support, including MAX395EAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX395EAG requirements.
6.How does Aetrix verify that MAX395EAG is sourced from the original manufacturer or authorized distributors?
All MAX395EAG 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 MAX395EAG meets industry standards.
7.What is the process for return or replacement of MAX395EAG?
All MAX395EAG units undergo pre-shipment inspection (PSI). If there is an issue with MAX395EAG, 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 MAX395EAG part is unused and in its original packaging.
Return procedure for MAX395EAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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