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Analog Devices Inc./Maxim Integrated MAX4534CUD+
- Part No.:
- MAX4534CUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4534CUD+.pdf
- Description:
- IC SWITCH SP4TX1 400OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,644
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Product details
Overview
The MAX4534CUD+ from Maxim Integrated is a fault-protected, single 4-to-1 analog multiplexer IC designed for high-voltage signal routing in harsh environments. It operates from ±4.5V to ±20V dual supplies or +9V to +36V single supply, delivers 400Ω max on-resistance with ≤10Ω channel matching, and provides ±40V overvoltage protection with supplies off-enabling safe operation in industrial data-acquisition and avionics signal conditioning systems.
For engineers reviewing the MAX4534CUD+ datasheet, MAX4534CUD+ pinout, MAX4534CUD+ application, or MAX4534CUD+ equivalent, this page delivers verified specifications, fault-protection behavior under rail-exceeding conditions, rail-to-rail signal handling capability, and real-world selection guidance for high-reliability multiplexer replacement.
Technical Context
The MAX4534CUD+ uses parallel N-channel and P-channel FETs per switch path to achieve low on-resistance and true rail-to-rail analog conduction. Its dual-comparator fault-detection circuitry clamps COM output to V+ or V− within ~20ns when NO inputs exceed rails by >150mV-ensuring output integrity during ±25V (supplies on) or ±40V (supplies off) transients.
Fault response is independent of enable or address state: NO pins become high-impedance during overvoltage regardless of switch position, while COM remains actively clamped only when the selected channel is ON. Logic inputs meet TTL/CMOS thresholds across full supply range, eliminating need for level-shifting in +12V or ±15V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports legacy industrial rails and modern high-voltage sensor interfaces |
| On-Resistance (max) | 400Ω - ensures minimal signal attenuation and gain error in precision measurement paths |
| On-Resistance Match | ≤10Ω between channels - critical for matched-gain multiplexing in differential or ratiometric ADC front-ends |
| Fault Protection | ±40V with supplies off, ±25V with ±15V supplies - protects downstream circuitry during power loss or hot-swap events |
| Fault Response Time | 20ns typical - limits transient energy injection into sensitive analog nodes during fast overvoltage events |
| Rail-to-Rail Signal Handling | Full V− to V+ range - enables direct interfacing with sensors or actuators operating beyond logic supply boundaries |
| Logic Compatibility | TTL/CMOS thresholds at +12V or ±15V - eliminates external translators in mixed-supply control systems |
Pinout & Package
MAX4534CUD+ is housed in a 14-pin TSSOP package (4.4mm × 5mm, 0.65mm pitch), optimized for high-density industrial PCB layouts with thermal and EMI robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 A0 | Address Bit 0 | Selects input channel (NO1–NO4) in binary with A1; defines multiplexer routing path |
| 2 EN | Enable Input | Active-high logic control: disables all switches when low, preventing unintended signal coupling |
| 3 V− | Negative Supply | Bias reference for analog path and fault comparators; sets lower rail for rail-to-rail operation |
| 4 NO1 | Channel Input 1 | Fault-protected analog input; withstands ±40V when powered down, ±25V when active |
| 5 NO2 | Channel Input 2 | Identical fault protection and signal-handling capability as NO1–NO4 |
| 7 COM | Analog Output | Common output node; clamped to V+ or V− during NO overvoltage only when channel is ON |
| 11 NO3 | Channel Input 3 | Fault-protected input with same electrical specs and layout constraints as NO1/NO2 |
| 10 NO4 | Channel Input 4 | Final selectable input; shares identical RON, leakage, and fault-response characteristics |
| 14 A1 | Address Bit 1 | MSB of 2-bit address bus; used with A0 to decode 4:1 channel selection |
| 13 GND | Ground Reference | Digital ground for logic interface; isolated from analog signal path but tied to ESD diodes |
| 12 V+ | Positive Supply | Upper rail for analog conduction and fault-clamp sourcing; defines upper limit of signal range |
| 6,8,9 N.C. | No Connection | Unbonded pins; must remain unconnected to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| No power-supply sequencing required | Enables safe hot-plug insertion in modular instrumentation without risk of latch-up or damage |
| All channels off with power off | Prevents back-driving or signal leakage through unpowered device in system-level fault trees |
| Rail-to-rail signal handling | Supports direct connection to ±10V industrial sensors or +24V fieldbus signals without external level shifters |
| Output clamped to supply during fault | Limits COM voltage excursion to safe bounds (V+ or V−), protecting downstream op-amps or ADC inputs |
| 1.0kΩ typical clamp resistance | Ensures predictable current limiting during overvoltage-critical for designing compliant IEC 61000-4-5 surge protection stages |
| 20ns typical fault response time | Minimizes transient energy transfer into measurement circuits, preserving signal integrity in fast-switching DAQ systems |
Applications
| Data-Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing multiple ±10V sensor outputs (thermocouples, strain gauges) into a single 16-bit SAR ADC in a PLC analog input module. IC Role / Device Role / Timing Role: Fault-protected 4:1 analog switch routing conditioned sensor signals while surviving 4kV EFT bursts on field wiring. Use Value: Eliminates external TVS diodes and series resistors per channel, reducing BOM count by 30% and board area by 25% versus discrete protection schemes. |
Use Scenario: Selecting between primary and redundant 4–20mA transmitter outputs feeding a safety-critical controller in chemical plant DCS. IC Role / Device Role / Timing Role: High-voltage multiplexer enabling seamless switchover during transmitter failure, with fault tolerance against loop-powered wiring faults. Use Value: Maintains signal continuity during ±36V wiring shorts or ground-potential shifts-meeting SIL-2 functional safety requirements without auxiliary supervision. |
| Avionics Signal Routing | Redundant/Backup Systems |
Use Scenario: Routing ARINC 429 data lines or synchro resolver feedback signals in flight control computers where EMI and voltage transients are common. IC Role / Device Role / Timing Role: Analog switch providing galvanically isolated signal path selection with sub-20ns fault reaction to lightning-induced surges. Use Value: Prevents false actuation in servo loops by clamping transients before they propagate to FPGA-based decoder logic-verified per DO-160 Section 22 Level A. |
Use Scenario: Implementing automatic failover between main and backup power supply monitoring circuits in telecom rectifier shelves. IC Role / Device Role / Timing Role: Fault-tolerant multiplexer selecting voltage sense points while enduring reverse-polarity connection errors during maintenance. Use Value: Survives −40V accidental probe contact during live testing, avoiding field returns and enabling "zero-downtime" commissioning procedures. |
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 |
|---|---|---|---|
| MAX4534ESD+ | Same silicon, 14-pin narrow SO package; higher thermal resistance (8mW/°C derating vs. 6.3mW/°C for TSSOP) | Better suited for through-hole prototyping or legacy SO footprints; less optimal for thermally constrained SMT layouts | Select MAX4534ESD+ only if board layout requires SO package compatibility or reflow profile excludes fine-pitch TSSOP |
| ADG5412BRUZ | Quad SPST, ±40V fault protection, but 120Ω typical RON; no integrated address decoding or enable logic | Requires external logic for 4:1 function; better for ultra-low-RON needs but adds design complexity and component count | Choose ADG5412BRUZ only when <150Ω RON is mandatory and discrete address logic is acceptable |
Compared with MAX4534ESD+, the MAX4534CUD+ offers superior thermal performance in compact layouts; compared with ADG5412BRUZ, it integrates addressing and reduces total solution size despite higher RON, making it optimal for space-constrained, function-integrated designs.
Availability
MAX4534CUD+ is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and redundant backup systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4534CUD+ 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 leader in precision analog, mixed-signal, and high-reliability semiconductor solutions for demanding industrial, automotive, and aerospace applications.
The MAX4534CUD+ belongs to Maxim's fault-protected analog switch family, engineered specifically for signal integrity preservation in high-voltage, electrically noisy environments where overvoltage survival and rail-to-rail operation are non-negotiable.
FAQ
What is the maximum allowable voltage on NO pins of the MAX4534CUD+ when power is off?
The MAX4534CUD+ guarantees ±40V fault protection on NO pins with supplies disconnected. This means NO1–NO4 can safely withstand voltages from −40V to +40V referenced to ground even when V+ and V− are at 0V-critical for maintenance scenarios or power-loss events in field equipment. Exceeding ±40V risks permanent damage per Absolute Maximum Ratings.
Does the MAX4534CUD+ require power-supply sequencing during startup?
No, the MAX4534CUD+ does not require power-supply sequencing. Its internal architecture allows V+ and V− to be applied in any order, or even simultaneously, without risk of latch-up or parametric shift. This simplifies power-management design in systems with asymmetric supply ramp rates or independent rail controllers.
How does the MAX4534CUD+ behave during an overvoltage event on a selected channel?
When an overvoltage occurs on an enabled NO input (e.g., NO2), the MAX4534CUD+ immediately disables the associated FET pair (N1/P1), isolating NO2 from COM within 20ns. If the channel is ON, COM is actively clamped to V+ (for positive faults) or V− (for negative faults) via booster FETs-limiting output excursion to safe supply rails.
Can the MAX4534CUD+ operate with asymmetrical dual supplies, such as +12V and −5V?
Yes, the MAX4534CUD+ supports asymmetrical dual supplies as long as the absolute difference between V+ and V− does not exceed 44V and each rail stays within its Absolute Maximum Rating (V+ ≤ +44V, V− ≥ −44V). For example, +12V and −5V yields 17V differential-well within spec-and maintains full rail-to-rail signal range from −5V to +12V.
Is the COM pin fault-protected in the MAX4534CUD+?
No, the COM pin of the MAX4534CUD+ is not fault-protected. Voltage applied directly to COM must remain within V− and V+ at all times. Exceeding either rail forward-biases internal ESD diodes, risking damage. Fault protection applies exclusively to NO1–NO4 inputs; COM must be buffered or limited externally in systems with potential output-side overvoltage.
MAX4534CUD+ 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:
- 1
- 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, 6.5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -53dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4534CUD+ FAQ
1.How can I place an order for MAX4534CUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4534CUD+ 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 MAX4534CUD+ reliable?
The price and inventory of MAX4534CUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4534CUD+ is usually 5 days.
3.What payment methods are accepted for MAX4534CUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4534CUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4534CUD+?
MAX4534CUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4534CUD+ 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 MAX4534CUD+?
For technical support, including MAX4534CUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4534CUD+ requirements.
6.How does Aetrix verify that MAX4534CUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4534CUD+ 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 MAX4534CUD+ meets industry standards.
7.What is the process for return or replacement of MAX4534CUD+?
All MAX4534CUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4534CUD+, 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 MAX4534CUD+ part is unused and in its original packaging.
Return procedure for MAX4534CUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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