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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:3,626
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Product details
Overview
The MAX4534CUD from Maxim Integrated is a fault-protected, single 4-to-1 analog multiplexer 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 on-resistance, ±40V fault protection with supplies off, and rail-to-rail signal handling - enabling robust data acquisition in avionics and industrial control systems.
For engineers reviewing the MAX4534CUD datasheet, MAX4534CUD pinout, MAX4534CUD application, or MAX4534CUD equivalent, this page provides verified specifications, TSSOP-14 package details, fault-protection behavior under overvoltage, and real-world selection guidance against comparable high-voltage mux alternatives.
Technical Context
The MAX4534CUD uses parallel N- and P-channel FETs per channel to achieve low on-resistance and true rail-to-rail signal conduction. Its dual-comparator fault-detection circuit clamps COM output to V+ or V− within ~20ns when NO inputs exceed rails by >150mV, while maintaining high-impedance NO terminals during faults.
Fault response is supply-agnostic: ±40V protection applies with supplies off; ±25V (at ±15V supplies) applies with supplies on. All digital inputs feature TTL/CMOS-compatible thresholds (0.8V low / 2.4V high), eliminating need for level-shifting when used with +12V or ±15V logic systems.
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 power architectures without external regulation. |
| On-Resistance (max) | 400Ω - ensures minimal signal attenuation and gain error in precision sensor or DAC output routing. |
| Fault Protection (supplies off) | ±40V on NO pins - enables safe connection to unpowered subsystems or legacy equipment with floating potentials. |
| Fault Response Time | 20ns typical - limits transient energy transfer during fast overvoltage events, protecting downstream ADCs or amplifiers. |
| Rail-to-Rail Signal Handling | Full V− to V+ range - preserves DC accuracy and dynamic range of bipolar signals without clipping or level shifting. |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) - interoperates directly with microcontrollers, FPGAs, and logic families using +12V or ±15V supplies. |
| Break-Before-Make Delay | 135ns typical - prevents momentary shorting between input channels during address transitions, critical for redundant signal selection. |
Pinout & Package
MAX4534CUD is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm), lead-free and RoHS-compliant, rated for 0°C to +70°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 | LSB address input controlling channel selection (NO1–NO4); CMOS/TTL compatible, referenced to GND. |
| 2 | EN | Active-high enable; disables all switches when low, placing COM in high-impedance state regardless of A0/A1. |
| 3 | V− | Negative supply rail; must be connected for dual-supply operation or tied to GND for single-supply mode. |
| 4 | NO1 | Fault-protected analog input channel 1; withstands ±40V with supplies off, ±25V with ±15V supplies on. |
| 5 | NO2 | Fault-protected analog input channel 2; identical protection and signal-handling specs as NO1–NO4. |
| 7 | COM | Analog output common node; not fault-protected - voltage must remain within V− to V+ to avoid ESD diode conduction. |
| 11 | NO3 | Fault-protected analog input channel 3; shares same internal protection architecture and clamp behavior as NO1/NO2/NO4. |
| 10 | NO4 | Fault-protected analog input channel 4; supports full 4-to-1 multiplexing with guaranteed channel matching (≤10Ω RON mismatch). |
| 14 | A1 | MSB address input; together with A0, selects one of four NO inputs to connect to COM when EN = high. |
| 13 | GND | Digital ground reference for logic inputs (A0, A1, EN); isolated from analog signal path but tied to ESD protection diodes. |
| 12 | V+ | Positive supply rail; powers internal logic translators and booster FETs that clamp COM during fault conditions. |
| 6, 8, 9 | N.C. | No internal connection; must remain unconnected per datasheet - no pull-up/down or routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal conduction | Supports analog signals spanning full V− to V+ range without distortion or clipping - essential for ±10V sensor interfaces. |
| Output clamping during fault | COM terminal actively clamped to V+ or V− during overvoltage, limiting downstream voltage excursion to safe supply rails. |
| No power-supply sequencing required | Operates correctly regardless of V+/V− ramp order - simplifies system power-up design and eliminates sequencing ICs. |
| All channels off with power off | NO pins become virtual open-circuit and COM floats when V+/V− = 0 - prevents back-driving or leakage into unpowered circuits. |
| Matched on-resistance | ≤10Ω max mismatch between any two channels - maintains consistent gain and offset across multiplexed sensor paths. |
Applications
| Avionics Sensor Multiplexing | Industrial Redundant I/O |
|---|---|
|
Use Scenario: Routing multiple aircraft engine temperature and pressure transducer outputs to a shared flight data recorder ADC. IC Role / Device Role / Timing Role: Fault-protected 4-to-1 analog switch selecting active sensor channel while rejecting ±40V transients induced by lightning or EMI. Use Value: Prevents latch-up or damage to the ADC during in-flight overvoltage events, ensuring continuous data logging integrity. |
Use Scenario: Selecting between primary and backup analog current loops in PLC analog output modules. IC Role / Device Role / Timing Role: High-voltage mux enabling automatic failover between redundant 4–20mA transmitter paths without PCB-level relays. Use Value: Eliminates mechanical relay wear and switching delay, achieving <200ns break-before-make transition for seamless redundancy. |
| Process Control Signal Conditioning | High-Voltage Data Acquisition |
|
Use Scenario: Multiplexing ±10V outputs from multiple isolation amplifiers monitoring motor phase voltages in VFD systems. IC Role / Device Role / Timing Role: Rail-to-rail analog switch preserving full dynamic range of isolated measurements while rejecting common-mode surges. Use Value: Maintains measurement linearity and SNR across all four channels, with ≤10Ω RON mismatch minimizing channel-to-channel gain error. |
Use Scenario: Front-end signal routing in portable insulation resistance testers generating up to +2500V DC test voltages. IC Role / Device Role / Timing Role: Isolating DUT sense lines from measurement circuitry during high-voltage stress testing using fault-clamp protection. Use Value: Enables safe connection of low-voltage ADC front-end to high-potential test nodes, with COM clamping preventing damage during arcing events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | 40V max supply (±20V), 4.7Ω typical RON, no fault protection - requires external TVS/clamp diodes for overvoltage. | Lower on-resistance suits precision instrumentation; lacks integrated fault response, increasing BOM count and layout complexity. | Select when ultra-low RON and bandwidth (>18MHz) outweigh fault-protection integration needs. |
| TMUX6214RSVR | 36V max supply (+36V single), 5.5Ω typical RON, ±60V fault protection (with supplies off), but only ±20V with supplies on. | Better fault margin at power-off; lower on-resistance than MAX4534CUD, but narrower operating temperature (–40°C to +125°C vs. C-grade 0°C to +70°C). | Prefer for extended temp designs requiring higher fault tolerance at zero power, accepting tighter supply voltage limits. |
Compared with ADG1414BRUZ and TMUX6214RSVR, the MAX4534CUD uniquely balances ±40V fault protection with supplies off, rail-to-rail operation, and proven field reliability in avionics - making it optimal where safety-critical fault containment and legacy system compatibility are mandatory.
Availability
MAX4534CUD is available at Aetrix Electronics and suitable for data-acquisition systems, industrial process control, and avionics signal routing requiring stable component supply and long-term obsolescence management.
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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4534CUD belongs to Maxim's fault-protected analog switch family, engineered specifically for signal integrity and survivability in high-voltage, mission-critical systems where overvoltage transients are unavoidable.
FAQ
What is the maximum allowable voltage on NO pins of the MAX4534CUD when power supplies are off?
The MAX4534CUD guarantees ±40V fault protection on NO pins with supplies off - meaning NO inputs may safely reach –40V to +40V relative to GND without damage. This enables hot-plug connectivity to unpowered subsystems or legacy equipment with floating grounds, a key requirement in avionics maintenance and industrial retrofit scenarios. The MAX4534CUD maintains high-impedance NO terminals under this condition.
Does the MAX4534CUD require power-supply sequencing during startup?
No, the MAX4534CUD does not require power-supply sequencing. Its internal logic translators and fault-protection comparators operate correctly regardless of whether V+ ramps before V− or vice versa. This eliminates the need for external sequencing controllers in multi-rail systems, simplifying power architecture design and improving system robustness during brown-out recovery. The MAX4534CUD remains functional across its full ±4.5V to ±20V supply range without timing constraints.
Can the COM pin of the MAX4534CUD be connected to a voltage outside the V+ and V− rails?
No - the COM pin of the MAX4534CUD is not fault-protected. Connecting COM to a voltage beyond V− or V+ forward-biases internal ESD diodes, risking permanent damage if current exceeds ±30mA. The MAX4534CUD datasheet explicitly states COM must remain within the supply rails. For applications requiring out-of-rail COM biasing, external protection circuitry or alternative architectures must be used - the MAX4534CUD itself cannot tolerate such conditions.
What is the on-resistance match specification for the MAX4534CUD, and why does it matter?
The MAX4534CUD guarantees ≤10Ω maximum on-resistance mismatch (∆RON) between any two channels. This tight matching ensures consistent gain and minimal channel-to-channel offset error when multiplexing precision sensor signals - critical in data-acquisition systems where calibration across multiple inputs must remain stable. The MAX4534CUD achieves this via matched parallel N/P-FET construction, unlike discrete-switch alternatives with >50Ω mismatch.
How does the MAX4534CUD behave during a positive overvoltage fault on an NO pin?
When an NO pin exceeds V+ by ~150mV, the MAX4534CUD's internal positive fault comparator triggers within 20ns, turning off both N- and P-channel FETs to isolate the NO pin. If the switch is ON, a booster FET clamps COM to V+, limiting output excursion. If OFF, both NO and COM go high-impedance. This behavior is fully specified in the MAX4534CUD datasheet and validated across temperature and supply variations - no external components needed.
MAX4534CUD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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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