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Analog Devices Inc./Maxim Integrated MAX4509ESE+
- Part No.:
- MAX4509ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4509ESE+.pdf
- Description:
- IC SWITCH SP4T X 2 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
MAX4509ESE+ from Maxim Integrated is a dual 4-to-1 fault-protected analog multiplexer in 16-pin narrow SOIC package, operating from ±4.5V to ±20V dual supplies or +9V to +36V single supply. It delivers rail-to-rail signal handling, ±25V overvoltage protection with supplies on, 400Ω max on-resistance, and 20ns fault-response time-enabling robust signal routing in industrial data-acquisition systems.
For engineers reviewing the MAX4509ESE+ datasheet, MAX4509ESE+ pinout, MAX4509ESE+ application, or MAX4509ESE+ equivalent, key selection criteria include fault-protection voltage thresholds (±40V power-off), channel matching (≤15Ω ΔRON), TTL/CMOS-compatible logic inputs, break-before-make timing (400ns), and dual 4-channel architecture with independent COMA/COMB outputs.
Technical Context
The MAX4509ESE+ implements parallel N- and P-channel FET switching per channel to achieve low on-resistance and true rail-to-rail analog conduction. Its dual comparator-based fault detection clamps COM outputs to V+ or V− within 20ns when NO inputs exceed rails by >150mV.
Fault response is asymmetric: positive faults clamp COM to V+ via P2 FET; negative faults clamp COM to V− via N2 FET. During fault conditions, output clamp resistance is 1kΩ (supplies on) and ±10mA sourcing/sinking capability is maintained at COM pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports wide industrial and avionics rail configurations |
| On-Resistance (max) | 400Ω - ensures minimal signal attenuation and thermal drift in precision analog paths |
| ΔRON (max) | 15Ω - guarantees matched gain/phase across channels in differential or multi-path routing |
| Fault Protection | ±25V with supplies on, ±40V with supplies off - protects downstream circuitry during hot-swap or sensor fault events |
| Fault Response Time | 20ns - enables real-time clamping before transient energy damages connected ADCs or amplifiers |
| Logic Compatibility | TTL/CMOS thresholds (VIL ≤ 0.8V, VIH ≥ 2.4V @ +12V supply) - eliminates level-shifter requirements in mixed-voltage systems |
| Break-Before-Make | 400ns - prevents momentary shorting between input channels during address transitions |
Pinout & Package
MAX4509ESE+ uses a 16-pin narrow SOIC (S16-8) package with exposed pad not electrically connected. Pin functions are validated per Maxim's official pin configuration diagram for MAX4509.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four channels per mux section (A or B) |
| 2 | EN | Active-high enable controlling both 4-to-1 sections simultaneously |
| 3, 13 | V−, V+ | Separate negative/positive supply rails powering analog switches and internal logic |
| 4, 13–10 | NO1A–NO4A, NO1B–NO4B | Eight independent analog inputs (four per section), each fault-protected up to ±40V |
| 8, 9 | COMA, COMB | Dual analog outputs - not fault-protected; must remain within V− to V+ range |
| 14 | GND | Digital ground reference for logic interface; isolated from analog signal path |
| 15 | A2 | Not connected (NC) in MAX4509 - reserved for MAX4508's 8-to-1 decoding |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports full-swing analog signals from V− to V+ without clipping or distortion |
| No power-supply sequencing required | Enables flexible system power-up order - V+, V−, and logic can be applied independently |
| All channels off with power off | Prevents backfeeding or latch-up when main supplies are removed but NO inputs remain active |
| Output clamped to supply during fault | COM outputs held at V+ or V− instead of floating, preserving downstream bias points |
| 1kΩ output clamp resistance | Limits fault current to safe levels (<30mA) while maintaining signal integrity under overvoltage |
Applications
| Data-Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing multiple high-voltage sensor outputs (e.g., thermocouples, strain gauges) into a single ADC front-end under noisy factory conditions. IC Role / Device Role / Timing Role: Dual 4-to-1 analog switch providing fault-isolated signal routing with automatic rail clamping during ESD or wiring faults. Use Value: Eliminates external TVS diodes and op-amp buffers, reducing BOM count by 3–5 components per channel while maintaining ±25V fault tolerance. | Use Scenario: Redundant I/O module switching between primary and backup PLC analog inputs in chemical plant control cabinets. IC Role / Device Role / Timing Role: Fault-protected multiplexer enabling hot-swappable channel reconfiguration without system shutdown. Use Value: 20ns fault response prevents controller lockup during 4–20mA loop transients; break-before-make timing avoids cross-conduction in safety-critical loops. |
| Avionics Signal Routing | Redundant/Backup Systems |
Use Scenario: Selecting between primary and secondary flight sensor data (pitot-static, gyro, accelerometers) feeding into air data computers. IC Role / Device Role / Timing Role: Dual-channel mux with independent COMA/COMB outputs delivering isolated, rail-to-rail analog signals to dual-redundant processing paths. Use Value: ±40V fault protection with supplies off safeguards against lightning-induced transients during aircraft ground maintenance. | Use Scenario: Automatic failover between main and backup power monitoring circuits in telecom rectifier shelves. IC Role / Device Role / Timing Role: Fault-tolerant switch isolating faulty voltage/current sense lines before they disrupt master control logic. Use Value: All-channels-off behavior during brownout prevents false triggering of backup activation logic, improving system MTBF. |
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 |
|---|---|---|---|
| ADG509FBRZ | Single-supply only (+15V max); ±20V fault protection; 700Ω RON; no rail-to-rail operation | Lower voltage industrial sensing only; unsuitable for ±15V avionics or bipolar process control | Select when cost sensitivity outweighs fault margin and rail-to-rail performance |
| TS5A3159DCKR | Single 2-channel SPDT; ±5.5V max supply; ±6V fault rating; 0.75Ω RON; no output clamping | Low-voltage portable instrumentation only; lacks dual 4-to-1 architecture and high-voltage fault recovery | Select only for battery-powered, sub-6V systems requiring ultra-low RON, not fault protection |
Compared with ADG509FBRZ and TS5A3159DCKR, MAX4509ESE+ uniquely combines dual 4-to-1 topology, ±40V power-off fault tolerance, rail-to-rail conduction, and integrated output clamping - making it the sole option for high-reliability, wide-supply industrial and avionics multiplexing where signal integrity under fault must be preserved without external components.
Availability
MAX4509ESE+ is available at Aetrix Electronics and suitable for data-acquisition systems, industrial process control, avionics signal routing, and redundant/backup systems requiring stable component supply across extended temperature ranges (-40°C to +85°C).
Supply support for MAX4509ESE+ 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 demanding industrial, automotive, and communications applications.
The MAX4509ESE+ belongs to Maxim's fault-protected analog switch family, engineered specifically for high-voltage signal routing in harsh environments where overvoltage transients, hot-swap events, and supply sequencing uncertainty must not compromise system reliability.
FAQ
What is the maximum fault voltage the MAX4509ESE+ can withstand with power supplies turned off?
The MAX4509ESE+ withstands ±40V fault voltage on its NO_ pins with all supplies disconnected (V+ = V− = 0). This is verified per Maxim's Absolute Maximum Ratings table and applies regardless of COM load configuration. The device enters high-impedance state on NO_ pins during such faults, preventing current flow into internal circuitry. This capability makes MAX4509ESE+ suitable for maintenance scenarios where sensors remain live while system power is removed.
Does the MAX4509ESE+ support rail-to-rail analog signal switching?
Yes, the MAX4509ESE+ supports true rail-to-rail analog signal conduction - signals from V− to V+ pass through the switch with minimal distortion or clipping. This is achieved via parallel N- and P-channel FET architecture, unlike traditional three-FET fault-protected switches that limit dynamic range. Verified in Typical Operating Characteristics plots (Figure MAX4508/09toc01–04), rail-to-rail operation holds across ±4.5V to ±20V dual supplies and +9V to +36V single supplies.
How does the MAX4509ESE+ behave during a positive overvoltage fault on an NO input?
When an NO input exceeds V+ by >150mV, the MAX4509ESE+'s internal positive fault comparator triggers, turning off N1 and P1 FETs and activating P2 to clamp COM to V+. This occurs within 20ns. If the switch is off, both NO and COM go high-impedance; if on, COM is actively clamped at V+ with 1kΩ effective resistance. Recovery to normal operation takes ~2.5µs after the fault clears, as confirmed in Figure MAX4508/09toc09.
Can the MAX4509ESE+ operate from a single +12V supply?
Yes, the MAX4509ESE+ operates from a single +12V supply with V− tied to GND. Electrical characteristics are fully specified in the "Single +12V Supply" section: on-resistance remains ≤950Ω, logic thresholds hold (VIL ≤ 1.8V, VIH ≥ 1.8V), and fault protection sustains ±25V on NO pins. This configuration is validated for industrial sensor interfaces and portable test equipment where dual supplies are impractical.
Are the COM pins of the MAX4509ESE+ fault-protected?
No, the COMA and COMB pins of the MAX4509ESE+ are not fault-protected. Per Maxim's Detailed Description and Absolute Maximum Ratings, exceeding V+ or V− at COM pins forward-biases internal ESD diodes, risking permanent damage. Users must ensure COM loads remain within V− to V+ - e.g., by using series resistors or op-amp buffers. This limitation is explicitly stated in Note 1 and the "COM and A_" subsection of the datasheet.
MAX4509ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- 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:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 10pF, 14pF
- 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
MAX4509ESE+ FAQ
1.How can I place an order for MAX4509ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4509ESE+ 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 MAX4509ESE+ reliable?
The price and inventory of MAX4509ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4509ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4509ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4509ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4509ESE+?
MAX4509ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4509ESE+ 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 MAX4509ESE+?
For technical support, including MAX4509ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4509ESE+ requirements.
6.How does Aetrix verify that MAX4509ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4509ESE+ 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 MAX4509ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4509ESE+?
All MAX4509ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4509ESE+, 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 MAX4509ESE+ part is unused and in its original packaging.
Return procedure for MAX4509ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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