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Analog Devices Inc./Maxim Integrated MAX395CAG+
- Part No.:
- MAX395CAG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX395CAG+.pdf
- Description:
- IC SW SPST-NOX8 100OHM 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,529
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Product details
Overview
MAX395CAG+ 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), ±2.7V to ±8V dual or +2.7V to +16V single supply operation, and SPI™/QSPI™/Microwire™-compatible 3-wire interface - used in precision audio routing, industrial data acquisition, and ATE systems.
For engineers reviewing the MAX395CAG+ datasheet, MAX395CAG+ pinout, MAX395CAG+ application, or MAX395CAG+ equivalent, this page delivers verified electrical specs, daisy-chain timing behavior, leakage performance at temperature extremes, on-resistance flatness over signal range, and pin-compatible alternatives for serial-switch-based system design.
Technical Context
The MAX395CAG+ implements an 8-bit shift register driving parallel latches that control eight independent CMOS SPST switches; all analog paths conduct bidirectionally with matched on-resistance (≤5Ω between channels) and flatness ≤10Ω across ±3V signal range. Its serial interface operates synchronously on SCLK rising edge with CS-controlled latch update.
It supports daisy-chaining via DOUT-to-DIN cascading under shared CS, enabling synchronized configuration of multiple devices; RESET asynchronously forces all switches OFF and clears the shift register, while TTL/CMOS logic thresholds (0.8V–2.4V) ensure compatibility with ±5V or +5V digital supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation in low-voltage analog paths |
| On-Resistance Match | ≤5Ω max between channels - critical for channel-to-channel gain consistency in multiplexed measurement systems |
| Rail-to-Rail Signal Range | VCOM/VNO = V− to V+ - enables full-swing analog switching without clipping in ±5V or +12V systems |
| Off-Leakage Current | 0.1nA at +25°C - preserves high-impedance node integrity in precision sensor front-ends |
| Supply Range | ±2.7V to ±8V dual or +2.7V to +16V single - supports legacy industrial rails and modern low-voltage microcontroller interfaces |
| Serial Interface | SPI/QSPI/Microwire-compatible 3-wire (SCLK/DIN/CS) - eliminates need for parallel address/data buses in space-constrained PCBs |
| ESD Protection | >2kV per Method 3015.7 - sustains handling and board-level transients without latch-up or parametric shift |
Pinout & Package
MAX395CAG+ is housed in a 24-pin SOIC wide-body package (SOG), with exposed pad not electrically connected. Pin functions are validated per Maxim's official datasheet Rev 0 (11/95) and functional diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK (Pin 1) | Serial clock input | Drives synchronous data capture on rising edge; hysteresis ≥100mV prevents noise-induced bit errors |
| V+ (Pin 2) | Positive analog supply | Sets upper analog voltage limit; must be ≥|V−| for rail-to-rail operation |
| DIN (Pin 3) | Serial data input | Accepts 8-bit control word; LSB-first or MSB-first depends on host controller configuration |
| GND (Pin 4) | Digital ground reference | Reference for logic inputs only; analog signals float between V+ and V− |
| NO0–NO7 (Pins 5,7,9,11,14,16,18,20) | Analog switch normally-open terminals | Bidirectional - interchangeable with COMx as input or output in signal routing applications |
| COM0–COM7 (Pins 6,8,10,12,13,15,17,19) | Analog switch common terminals | Paired with NOx to form 8 independent SPST paths; no internal connection between COM pins |
| V− (Pin 21) | Negative analog supply | Connect to GND for single-supply mode; sets lower analog voltage limit |
| DOUT (Pin 22) | Serial data output | Shift-register output delayed by 8 clocks; enables daisy-chaining without external logic |
| RESET (Pin 23) | Asynchronous reset | Pull low to force all switches OFF and clear shift register - no clock required |
| CS (Pin 24) | Chip-select input | Latch-enable: rising edge commits 8-bit word to switch states; holds configuration when high |
Key Features
| Feature | Design Value |
|---|---|
| 8 independently controllable SPST switches | Enables flexible reconfiguration of analog signal paths without mechanical relays or discrete FET arrays |
| Matched on-resistance ≤5Ω | Reduces gain error in multi-channel instrumentation where channel switching occurs during measurement cycles |
| Break-before-make delay ≤15ns | Prevents momentary shorting between channels in multiplexer applications, avoiding signal glitches |
| Daisy-chainable serial interface | Allows expansion to N×8 switches using only 3 MCU GPIOs - ideal for modular test equipment and scalable sensor hubs |
| −55°C to +125°C operating range (MR grade) | Validated for avionics and downhole industrial use where thermal cycling exceeds commercial-grade limits |
Applications
| Audio Signal Routing | Industrial Data Acquisition |
|---|---|
Use Scenario: Switching line-level stereo inputs among multiple ADCs or DACs in professional audio mixers. 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 THD+N <0.002% at 1kHz; rail-to-rail support handles ±2.5V peak audio swings. | Use Scenario: Multiplexing 8 thermocouple or RTD sensor outputs into a single precision ADC in PLC I/O modules. IC Role / Device Role / Timing Role: Serially addressed analog multiplexer with guaranteed low leakage (0.1nA) to avoid sensor bias current errors. Use Value: 0.1nA off-leakage at +25°C minimizes offset drift in high-impedance sensor bridges; matched RON ensures channel calibration stability. |
| ATE Equipment | Avionics Signal Conditioning |
Use Scenario: Configuring stimulus/sense paths for automated test of mixed-signal ICs across multiple DUT sites. IC Role / Device Role / Timing Role: High-speed, low-charge-injection (2pC) switch enabling fast settling and repeatable parametric measurements. Use Value: 2pC charge injection limits transient kickback to <1mV on 10kΩ loads; tON/tOFF ≤400ns supports >1MHz test sequencing. | Use Scenario: Routing ARINC 429 or discrete discrete status signals in flight control interface units with EMI-hardened layout. IC Role / Device Role / Timing Role: Radiation-tolerant analog switch with >2kV HBM ESD rating and −55°C to +125°C MR-grade qualification. Use Value: MR-grade temperature range and 2kV ESD withstand enable direct placement near connectors without external protection diodes. |
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 |
|---|---|---|---|
| MAX395CWG+ | Same die, 24-pin wide SO package without exposed pad; identical electrical specs and timing | No thermal pad - slightly higher junction temperature rise under sustained 100mA load | Select MAX395CWG+ when board assembly uses standard SOIC reflow profile without thermal pad stencil |
| ADG798BRUZ | 8-channel SPI SPST switch with 4Ω typical RON, but only +3V to +5.5V single-supply operation; no dual-supply capability | Lacks rail-to-rail analog range beyond VDD; unsuitable for ±5V or ±12V signal conditioning | Choose ADG798BRUZ only for low-voltage, single-rail systems where sub-5Ω RON justifies loss of dual-supply flexibility |
Compared with MAX395CAG+, MAX395CWG+ offers identical functionality in a non-exposed-pad SOIC, while ADG798BRUZ trades dual-supply versatility for lower on-resistance in strictly 3.3V/5V environments - making MAX395CAG+ the sole option supporting both industrial bipolar analog rails and daisy-chained scalability.
Availability
MAX395CAG+ is available at Aetrix Electronics and suitable for industrial data acquisition, avionics signal routing, and automated test equipment requiring stable component supply across extended temperature and dual-supply configurations.
Supply support for MAX395CAG+ 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 and mixed-signal ICs for industrial, automotive, and communications applications, with emphasis on low-power, high-reliability solutions.
The MAX395CAG+ belongs to Maxim's serially controlled analog switch product line, engineered for systems needing compact, software-configurable signal routing with guaranteed matching, low leakage, and robust ESD tolerance in harsh environments.
FAQ
What supply voltages does the MAX395CAG+ support?
The MAX395CAG+ supports dual supplies from ±2.7V to ±8V or a single supply from +2.7V to +16V. This allows operation in legacy ±5V, ±12V, or modern +3.3V/+5V/+12V systems. The analog signal range extends rail-to-rail between V+ and V−, and V− may be tied to GND for single-supply use. All logic inputs remain compatible across these configurations due to 0.8V–2.4V TTL/CMOS thresholds.
How does the serial interface of the MAX395CAG+ work?
The MAX395CAG+ uses a 3-wire SPI™/QSPI™/Microwire™-compatible interface: SCLK (rising-edge clock), DIN (data in), and CS (chip select). An 8-bit word shifts in MSB-first; on the rising edge of CS, the word latches to update all eight switches simultaneously. DOUT provides daisy-chain capability by outputting the shifted-out MSB after eight clocks. RESET asynchronously clears the register and opens all switches.
Can the MAX395CAG+ be used as a multiplexer?
Yes - the MAX395CAG+ can be configured as an 8×1 multiplexer by tying COM0–COM7 together as the output and using NO0–NO7 as inputs. It also supports dual 4×2 differential mux topologies by grouping COM0–COM3 and COM4–COM7. Fast-mode programming allows channel updates every clock cycle, and break-before-make timing (≤15ns) prevents signal shorts during transitions.
What is the on-resistance flatness specification for the MAX395CAG+?
The MAX395CAG+ guarantees ≤10Ω on-resistance flatness (RFLAT(ON)) over the specified analog signal range (e.g., ±3V with ±5V supplies). This means the variation in RON across the full signal swing is no more than 10Ω - critical for maintaining consistent gain and linearity in precision measurement paths where signal amplitude varies widely.
Is the MAX395CAG+ pin-compatible with other industry-standard switches?
Yes - the MAX395CAG+ is explicitly stated as pin-compatible with the industry-standard MAX335, enabling drop-in replacement in existing designs. It is also electrically equivalent to two MAX391 quad switches sharing one serial interface. This compatibility simplifies upgrades and second-source qualification without PCB redesign.
MAX395CAG+ 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:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
MAX395CAG+ FAQ
1.How can I place an order for MAX395CAG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX395CAG+ 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 MAX395CAG+ reliable?
The price and inventory of MAX395CAG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX395CAG+ is usually 5 days.
3.What payment methods are accepted for MAX395CAG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX395CAG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX395CAG+?
MAX395CAG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX395CAG+ 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 MAX395CAG+?
For technical support, including MAX395CAG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX395CAG+ requirements.
6.How does Aetrix verify that MAX395CAG+ is sourced from the original manufacturer or authorized distributors?
All MAX395CAG+ 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 MAX395CAG+ meets industry standards.
7.What is the process for return or replacement of MAX395CAG+?
All MAX395CAG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX395CAG+, 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 MAX395CAG+ part is unused and in its original packaging.
Return procedure for MAX395CAG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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