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Analog Devices Inc./Maxim Integrated MAX4709ESE+
- Part No.:
- MAX4709ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4709ESE+.pdf
- Description:
- IC MUX 4:1 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:110
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Product details
Overview
The MAX4709ESE+ from Maxim Integrated is a dual 4-to-1 fault-protected analog multiplexer in a 16-pin narrow SO package, designed for high-reliability signal routing in harsh voltage environments. It delivers ±40V fault protection with supplies off, 400Ω max on-resistance, rail-to-rail signal handling, and operates from ±4.5V to ±20V dual or +9V to +36V single supply - enabling use in avionics data acquisition and industrial redundancy systems.
For engineers reviewing the MAX4709ESE+ datasheet, MAX4709ESE+ pinout, MAX4709ESE+ application, or MAX4709ESE+ equivalent, key selection criteria include fault response time (100ns), channel-to-channel crosstalk (-62dB), COMA/COMB output isolation during fault, TTL/CMOS-compatible logic thresholds, and dual independent 4-channel switching architecture.
Technical Context
The MAX4709ESE+ implements two parallel FET (N+P) switch cells per channel to achieve low, flat on-resistance and rail-to-rail analog conduction without clamp diodes to rails. Its fault protection uses dual comparators monitoring each NOx input against V+ and V−; exceeding either rail forces both FETs OFF, placing both NOx and corresponding COM terminal into high-impedance state - independent of EN or address control.
Unlike legacy fault-protected muxes (e.g., MAX4509), the MAX4709ESE+ disconnects COM from NO during fault instead of clamping to rail, preserving downstream circuit integrity. It supports asynchronous fault recovery (1.5µs), requires no power-supply sequencing, and maintains all channels OFF when supplies are absent - critical for hot-swap and backup system reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fault Protection | ±40V on NO inputs with supplies off; ±36V with ±15V supplies - enables safe connection to unpowered or floating external sensors. |
| On-Resistance (RON) | 400Ω max at ±15V supplies - ensures minimal signal attenuation and gain error in precision measurement paths. |
| On-Resistance Match | 15Ω max between channels - preserves channel-to-channel signal fidelity in multi-sensor scanning applications. |
| Off-Isolation | -70dB at 1MHz - suppresses crosstalk between inactive channels in high-density signal routing. |
| Fault Response Time | 100ns - limits transient overvoltage exposure to downstream circuitry during fast ESD or surge events. |
| Logic Compatibility | TTL/CMOS thresholds (VIH = 2.4V, VIL = 0.8V at +12V supply) - allows direct interface with microcontrollers and FPGAs without level-shifting. |
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports wide industrial and aerospace power architectures. |
Pinout & Package
MAX4709ESE+ is housed in a 16-pin narrow SOIC (SO) package (package code: -, document 21-0041), with exposed pad not present and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active channel pair (NO1A/NO1B, NO2A/NO2B, etc.) - enable simultaneous routing of two signals. |
| 2 | EN | Active-high enable controlling both mux sections - disables all switches when low, preventing unintended conduction. |
| 3, 14 | V−, V+ | Analog supply rails powering internal FETs and fault comparators - require 0.1µF local bypassing for stable operation. |
| 4–7, 10–13 | NO1A–NO4A, NO1B–NO4B | Eight independent analog inputs (four per section) - each fault-protected up to ±40V regardless of supply state. |
| 8, 9 | COMA, COMB | Dual analog outputs - not fault-protected; must remain within V− to V+ to avoid damage or leakage. |
| 15 | GND | Logic ground reference for digital inputs (A0, A1, EN); internally isolated from analog signal path - prevents ground-loop coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No power-supply sequencing required | Operates safely across full supply range without risk of latch-up or damage during asymmetric power-up/down sequences. |
| All channels off with power off | Guarantees open-circuit isolation between NO and COM terminals when V+ and V− are 0V - essential for fail-safe hot-swap insertion. |
| Rail-to-rail signal handling | Passes analog signals from V− to V+ without clipping or distortion - supports full dynamic range of ±15V industrial sensors. |
| 100ns fault-response time | Minimizes energy transfer during overvoltage transients, protecting downstream ADCs, amplifiers, or FPGA I/O banks. |
| Independent dual 4-to-1 architecture | Routes two separate signal streams simultaneously (e.g., differential sensor pairs or redundant channels) with no shared control overhead. |
Applications
| Avionics Sensor Multiplexing | Industrial Redundancy Switching |
|---|---|
Use Scenario: Routing multiple aircraft engine temperature and pressure sensors to a central data acquisition unit under EMI-rich, high-vibration conditions. IC Role / Device Role / Timing Role: Dual 4-to-1 analog multiplexer providing fault-isolated signal selection with automatic disconnection during sensor cable faults or lightning-induced transients. Use Value: Prevents single-point failure propagation; ±40V fault tolerance eliminates need for external TVS diodes on each sensor line. |
Use Scenario: Selecting between primary and backup process control signals (e.g., flow rate, valve position) in chemical plant PLC I/O modules. IC Role / Device Role / Timing Role: Fault-aware signal selector that isolates failed channels while maintaining continuity on healthy paths during maintenance or fault events. Use Value: Enables seamless switchover without system reset; break-before-make timing (<100ns) avoids momentary shorts between redundant sources. |
| ATE Channel Protection | Hot-Swap Signal Interface |
Use Scenario: Connecting DUT analog outputs to test instrumentation in automated test equipment where probe misalignment or short circuits may occur. IC Role / Device Role / Timing Role: Fault-protected multiplexer acting as front-end guard for precision digitizers, limiting fault current to <100mA peak and blocking >±36V excursions. Use Value: Protects $10k+ measurement hardware from accidental DUT overvoltage; 100ns trip time reduces test system downtime. |
Use Scenario: Interfacing fieldbus nodes (e.g., RS-485 transceivers, CAN PHYs) to backplane connectors subject to live insertion/removal. IC Role / Device Role / Timing Role: Signal path isolator that remains non-conductive until fully powered, then routes bus signals only after stable supply detection. Use Value: Eliminates bus contention and latch-up during hot-plug; all-off behavior with zero supply prevents backfeeding into unpowered slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4712ESE+ | Single 4-to-1 configuration; lower on-resistance (200Ω typ); same ±40V fault rating but optimized for low-voltage (±5V) operation. | Lacks dual-output capability; suited for space-constrained single-path systems rather than parallel signal routing. | Select MAX4712ESE+ when only one 4-channel path is needed and supply headroom is limited to ±5V. |
| ADG509FBRUZ | Quad SPST fault-protected switches (not mux architecture); ±40V fault rating; higher on-resistance (500Ω max); no integrated address decoder. | Requires external logic for channel selection; better for distributed protection vs. centralized multiplexing. | Choose ADG509FBRUZ when discrete switch control per channel is preferred over decoded mux addressing. |
Compared with MAX4712ESE+ and ADG509FBRUZ, the MAX4709ESE+ uniquely provides dual synchronized 4-to-1 routing with built-in address decoding and rail-to-rail performance across ±4.5V–±20V - making it optimal for compact, high-channel-count fault-tolerant data acquisition.
Availability
MAX4709ESE+ is available at Aetrix Electronics and suitable for avionics sensor multiplexing, industrial redundancy switching, and ATE channel protection requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX4709ESE+ 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX4709ESE+ belongs to Maxim's fault-protected analog switch family, engineered specifically for robust signal routing in environments prone to voltage transients, hot-swap events, and uncontrolled sensor connections.
FAQ
What is the maximum fault voltage the MAX4709ESE+ can withstand with power supplies disconnected?
The MAX4709ESE+ sustains ±40V on any NOx input relative to GND when V+ and V− are at 0V - verified per Absolute Maximum Ratings and Electrical Characteristics tables. This allows safe connection to externally powered sensors or cables before system power-up. The device enters high-impedance state on both NOx and COMx terminals during such faults, protecting downstream circuitry without requiring external clamping components.
Does the MAX4709ESE+ support single-supply operation, and what is the minimum voltage?
Yes, the MAX4709ESE+ operates from a single +9V to +36V supply with V− tied to GND. At +9V, it maintains functional fault protection and switching performance, though on-resistance increases to ~1100Ω max. The logic inputs remain TTL/CMOS compatible across this range due to internal level translation - enabling direct interfacing with 3.3V or 5V controllers even at +9V V+.
Are the COMA and COMB pins fault-protected on the MAX4709ESE+?
No, COMA and COMB pins are not fault-protected. Per the datasheet's Pin Descriptions and Detailed Description sections, only NOx inputs have ±40V fault tolerance. COMx pins must be kept within the V− to V+ supply rails at all times - exceeding these limits risks permanent damage via internal ESD diode conduction. External clamping or rail-referenced loads are mandatory for safe operation.
How does the MAX4709ESE+ behave during a transient overvoltage event?
Upon detecting a NOx voltage exceeding V+ or V−, the MAX4709ESE+ triggers within 100ns (typical fault-response time), turning OFF both N- and P-channel FETs in the affected switch. This places both NOx and its associated COMx terminal into high-impedance state - isolating the fault from downstream circuitry. Recovery occurs within 1.5µs after the fault voltage returns within rails, with no latching or manual reset required.
Can the MAX4709ESE+ be used in a hot-swap application where boards are inserted while system power is active?
Yes, the MAX4709ESE+ is explicitly designed for hot-swap use cases. Its "all channels off with power off" behavior ensures no conduction path exists during insertion, preventing bus contention or backfeeding. Combined with ±40V fault tolerance on NOx pins and absence of supply sequencing requirements, it safely handles live backplane connections - as confirmed in Applications and Features sections of the datasheet.
MAX4709ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 400Ohm
- Channel-to-Channel Matching (ΔRon):
- 15Ohm (Max)
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 275ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 10pF, 19pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -62dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4709ESE+ FAQ
1.How can I place an order for MAX4709ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4709ESE+ 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 MAX4709ESE+ reliable?
The price and inventory of MAX4709ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4709ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4709ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4709ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4709ESE+?
MAX4709ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4709ESE+ 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 MAX4709ESE+?
For technical support, including MAX4709ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4709ESE+ requirements.
6.How does Aetrix verify that MAX4709ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4709ESE+ 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 MAX4709ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4709ESE+?
All MAX4709ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4709ESE+, 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 MAX4709ESE+ part is unused and in its original packaging.
Return procedure for MAX4709ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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