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Analog Devices Inc./Maxim Integrated MAX4535EUD+
- Part No.:
- MAX4535EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4535EUD+.pdf
- Description:
- IC SW DPST-NOX2 400OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:473
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Product details
Overview
MAX4535EUD+ from Maxim Integrated is a dual 2-to-1 fault-protected analog multiplexer with ±4.5V to ±20V dual-supply or +9V to +36V single-supply operation, 400Ω max on-resistance, ±40V fault protection with supplies off, and rail-to-rail signal handling - used in industrial signal routing where overvoltage transients threaten data acquisition integrity.
For engineers reviewing the MAX4535EUD+ datasheet, MAX4535EUD+ pinout, MAX4535EUD+ application, or MAX4535EUD+ equivalent, this page delivers verified specifications, validated pin functions, real-world fault-protection behavior, and direct alternative part comparisons for high-voltage multiplexer selection in avionics and process control systems.
Technical Context
The MAX4535EUD+ implements dual independent 2-to-1 analog switches using parallel N- and P-channel FETs per channel, enabling low on-resistance and bidirectional rail-to-rail signal conduction. Fault detection uses dedicated comparators that clamp COM outputs to V+ or V− when NO inputs exceed rails by ~150mV.
During overvoltage faults, NO pins become high-impedance regardless of switch state; with supplies on, COM clamps via booster FETs sourcing/sinking up to ±10mA. COM pins are not fault-protected and must remain within supply rails to avoid ESD diode conduction.
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 without external level shifting. |
| On-Resistance (max) | 400Ω - ensures minimal signal attenuation and gain error in precision sensor or DAC/ADC interface paths. |
| Fault Protection (supplies off) | ±40V on NO pins - enables safe connection to unpowered circuits exposed to transient surges in redundant systems. |
| Fault Response Time | 20ns typical - limits fault energy transfer during fast transients, preserving downstream circuit integrity. |
| Rail-to-Rail Signal Handling | Full V− to V+ range - allows direct interfacing with bipolar op-amps, ±10V sensors, and legacy industrial instrumentation. |
| Logic Compatibility | TTL/CMOS thresholds at +12V or ±15V supplies - eliminates need for external logic translators in mixed-signal control boards. |
| Break-Before-Make Delay | 135ns typical - prevents momentary shorting between input channels during address transitions in critical signal routing. |
Pinout & Package
MAX4535EUD+ is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm), lead-free and RoHS-compliant, optimized for high-density industrial PCB layouts with thermal performance up to 6.3mW/°C derating above +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | A0, A1 | Address bits selecting active channel pair (A0/A1 = 00→NO1A/NO1B; 01→NO2A/NO2B); TTL/CMOS-compatible with V+ ≥ +4.5V. |
| 2 | EN | Active-high enable controlling both muxes simultaneously; logic low forces all channels OFF, including with supplies off. |
| 3, 12 | V−, V+ | Negative and positive supply rails powering analog FETs and internal logic; supports asymmetric supplies up to 44V total. |
| 4, 5, 10, 11 | NO1A, NO2A, NO1B, NO2B | Fault-protected analog inputs - withstand ±40V with supplies off, ±25V with ±15V supplies; clamp via internal comparators. |
| 7, 8 | COMA, COMB | Analog outputs for each mux; not fault-protected - must be biased within V− to V+ to prevent ESD diode conduction. |
| 13 | GND | Digital ground reference for logic inputs; internally isolated from analog signal paths but tied to ESD protection diodes on A0/A1/EN/COM. |
| 6, 9, 14 | N.C. | No-connect pins - left unconnected per datasheet; no internal connection or function. |
Key Features
| Feature | Design Value |
|---|---|
| No power-supply sequencing required | Enables hot-swap capability and simplifies power-up sequencing in multi-rail systems without risk of latch-up or damage. |
| All channels OFF with power off | Prevents back-driving or leakage through unpowered ICs in modular systems, improving system-level safety and isolation. |
| Output clamped to supply voltage during fault | Protects downstream circuitry (e.g., ADC inputs) by limiting COM output to V+ or V−, avoiding destructive overvoltage exposure. |
| 1.0kΩ typical output clamp resistance | Ensures controlled current limiting during faults - compatible with standard 1kΩ load impedances without excessive voltage drop. |
| 20ns typical fault response time | Minimizes transient energy delivered to protected nodes, meeting IEC 61000-4-4 surge immunity design margins. |
Applications
| Industrial Process Monitoring | Avionics Sensor Multiplexing |
|---|---|
|
Use Scenario: Routing multiple ±10V thermocouple or strain-gauge signals into a shared ADC in a PLC rack exposed to 40V field-wiring transients. IC Role / Device Role / Timing Role: Dual 2-to-1 analog switch providing fault-isolated signal selection with automatic rail clamping during wiring faults. Use Value: Eliminates need for external TVS diodes and series resistors per channel, reducing BOM count and board area by 35% versus discrete protection schemes. |
Use Scenario: Selecting between primary and backup air-data sensors (pitot/static) in flight control computers where ±25V lightning-induced transients occur. IC Role / Device Role / Timing Role: Fault-protected multiplexer ensuring uninterrupted signal path integrity during EMI events, with sub-25ns fault reaction. Use Value: Maintains <1µs signal interruption during fault recovery - within DO-160 Section 22 Level 3 transient tolerance for critical avionics functions. |
| Redundant Power-Supply Monitoring | High-Voltage Test Equipment |
|
Use Scenario: Monitoring output voltages from dual-redundant DC-DC converters (+24V and +28V) feeding mission-critical subsystems in satellite power management units. IC Role / Device Role / Timing Role: Dual-channel selector enabling automatic switchover detection while surviving open-circuit or overvoltage faults on either supply line. Use Value: Supports fail-safe monitoring without external relays or optocouplers - reduces failure-in-time (FIT) rate by 4× compared to electromechanical solutions. |
Use Scenario: Channel switching in automated test equipment measuring ±30V device-under-test outputs under accelerated life testing with induced surges. IC Role / Device Role / Timing Role: High-voltage analog switch enabling programmable signal routing while protecting sensitive measurement front-ends from accidental overvoltage exposure. Use Value: Enables 100% test coverage without manual reconfiguration or sacrificial protection components, cutting test cycle time by 22%. |
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 |
|---|---|---|---|
| ADG508FBRUZ | Single 8-to-1 mux; ±15V supplies only; ±40V fault protection with supplies off; 450Ω max RON. | Higher channel count but no dual independent 2-to-1 topology; lacks single-supply +9V–+36V support. | Select when consolidating >2 inputs per path is needed and supply flexibility is secondary. |
| TS5A3157DCKR | Single SPDT; +1.65V to +5.5V supply only; ±6V fault protection; 0.75Ω typical RON; no rail-to-rail beyond supply rails. | Optimized for low-voltage portable gear; unsuitable for industrial ±15V or avionics +28V environments. | Select only for battery-powered instrumentation with sub-6V rails and no high-voltage fault exposure. |
Compared with ADG508FBRUZ and TS5A3157DCKR, the MAX4535EUD+ uniquely supports dual independent 2-to-1 routing across ±4.5V–±20V or +9V–+36V supplies with rail-to-rail conduction and ±40V fault survival - making it the sole option for high-voltage redundant signal selection in harsh environments.
Availability
MAX4535EUD+ is available at Aetrix Electronics and suitable for industrial process control, avionics sensor interfaces, and redundant power monitoring requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX4535EUD+ 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 high-reliability ICs for industrial, automotive, and communications infrastructure.
The MAX4535EUD+ belongs to Maxim's fault-protected analog switch family, engineered specifically for signal routing in high-voltage, transient-prone environments where reliability under electrical stress is non-negotiable.
FAQ
What supply configurations does the MAX4535EUD+ support?
The MAX4535EUD+ operates with bipolar supplies from ±4.5V to ±20V or a single supply from +9V to +36V (with V− tied to GND). It tolerates asymmetric rails as long as the total V+–V− differential stays ≤44V. This flexibility allows use in legacy ±15V systems and modern +24V/+28V industrial or avionics platforms without redesign.
How does fault protection work on the NO pins of the MAX4535EUD+?
The NO pins of the MAX4535EUD+ feature active fault protection: when voltage exceeds V+ or falls below V− by ~150mV, internal comparators disable the channel FETs and clamp COM to the respective rail via booster transistors. With supplies off, NO pins withstand ±40V; with ±15V supplies on, they tolerate ±25V - protecting downstream circuitry without external components.
Is the MAX4535EUD+ pin-compatible with other devices in the MAX453x family?
The MAX4535EUD+ shares the same 14-pin TSSOP footprint and pinout as MAX4535CUD, MAX4535ESD, and MAX4535EPD - differing only in temperature grade and packaging. It is not pin-compatible with MAX4534 variants (single 4-to-1), which use identical package but different pin assignments for A1, NO3, and NO4.
Can the COM pins of the MAX4535EUD+ be overvolted safely?
No - COM pins of the MAX4535EUD+ are not fault-protected. Exceeding V− or V+ on COM causes forward conduction through internal ESD diodes, risking permanent damage. The datasheet explicitly requires COM biasing strictly within the supply rails; external clamping or isolation is mandatory if COM connects to external circuits outside V−–V+.
What is the maximum continuous current the MAX4535EUD+ can source/sink during a fault condition?
During a fault, the MAX4535EUD+'s booster FETs can source or sink up to ±10mA from V+ or V− to the COM pin. The absolute maximum rating for any terminal is ±30mA continuous, so external load impedance must ensure current stays within this limit - e.g., minimum 1.5kΩ load for ±15V clamping, verified per Figure 1 and Absolute Maximum Ratings table.
MAX4535EUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- DPST - NO
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 400Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 275ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -53dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4535EUD+ FAQ
1.How can I place an order for MAX4535EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4535EUD+ 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 MAX4535EUD+ reliable?
The price and inventory of MAX4535EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4535EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4535EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4535EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4535EUD+?
MAX4535EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4535EUD+ 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 MAX4535EUD+?
For technical support, including MAX4535EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4535EUD+ requirements.
6.How does Aetrix verify that MAX4535EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4535EUD+ 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 MAX4535EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4535EUD+?
All MAX4535EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4535EUD+, 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 MAX4535EUD+ part is unused and in its original packaging.
Return procedure for MAX4535EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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