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Analog Devices Inc./Maxim Integrated MAX4534EUD+
- Part No.:
- MAX4534EUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4534EUD+.pdf
- Description:
- IC SWITCH SP4TX1 400OHM 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
MAX4534EUD+ 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 with ±4.5V to ±20V dual supplies or +9V to +36V single supply, delivers ≤400Ω on-resistance, ±40V fault protection with supplies off, and 20ns typical fault response time. It is used in avionics data-acquisition systems where rail-to-rail signal integrity and overvoltage resilience are critical.
For engineers reviewing the MAX4534EUD+ datasheet, MAX4534EUD+ pinout, MAX4534EUD+ application, or MAX4534EUD+ equivalent, this page provides verified specifications, fault-protection behavior under ±15V/±20V operation, TTL/CMOS-compatible logic thresholds at +12V supply, and real-world design implications of its 150mV rail-clamp threshold and break-before-make timing.
Technical Context
The MAX4534EUD+ uses parallel N-channel and P-channel FETs per channel to achieve low on-resistance and true rail-to-rail signal handling. Its dual-comparator fault-detection circuitry monitors each NO_ input against V+ and V−, triggering clamping within 20ns when voltage exceeds rails by ~150mV.
Fault response is asymmetric: positive faults clamp COM to V+, negative faults clamp COM to V− via dedicated booster FETs capable of ±10mA sourcing/sinking. During power-off, NO_ pins remain high-impedance up to ±40V, while COM, EN, and address pins lack fault protection and must stay within supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - supports industrial and avionics rails without level-shifting. |
| On-Resistance (max) | 400Ω - ensures minimal signal attenuation and thermal drift in precision sensor multiplexing. |
| Fault Protection (supplies off) | ±40V on NO_ pins - enables safe hot-swap and backup-system interfacing with unpowered circuitry. |
| Fault Response Time (typ) | 20ns - prevents transient overvoltage damage to downstream ADCs or amplifiers during fault events. |
| Rail-to-Rail Signal Range | V− to V+ - allows full utilization of ±15V op-amp stages or +24V PLC I/O without clipping. |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) at +12V supply - interoperates directly with microcontrollers and FPGAs. |
| Break-Before-Make Delay | 135ns (typ) - avoids momentary shorting between channels during address transitions in redundant systems. |
Pinout & Package
MAX4534EUD+ is housed in a 14-pin plastic DIP package rated for –40°C to +85°C operation. The package features through-hole mounting, 0.3-inch width, and standard DIP pin spacing compatible with prototyping and legacy industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | A0, A1 | Binary address inputs selecting one of four NO_ channels; CMOS/TTL compatible, no external pull-ups required. |
| 2 | EN | Active-high enable controlling all switches; logic low forces all channels OFF, including during power-down. |
| 3, 12 | V−, V+ | Separate analog supply rails; support asymmetric operation (e.g., V+ = +15V, V− = −5V) up to 44V total. |
| 4, 5, 10, 11 | NO1–NO4 | Fault-protected analog inputs; withstand ±40V with supplies off, ±25V with ±15V supplies applied. |
| 7 | COM | Common analog output; not fault-protected - must remain within V− to V+ to avoid ESD diode conduction. |
| 13 | GND | Digital ground reference for logic inputs; isolated from analog signal path but tied to ESD protection diodes. |
| 6, 8, 9 | N.C. | No internal connection - left unconnected per datasheet; no routing or thermal considerations required. |
Key Features
| Feature | Design Value |
|---|---|
| No power-supply sequencing required | Enables direct integration into systems with staggered rail startup (e.g., ±15V and +5V domains) without risk of latch-up. |
| All channels OFF with power off | Prevents back-driving or leakage paths when main power is removed - critical for fail-safe avionics interlocks. |
| Rail-to-rail signal handling | Supports full-swing signals from V− to V+ without distortion, enabling direct interface with ±10V sensor outputs. |
| Output clamped to supply during fault | COM terminal is actively limited to V+ or V− during overvoltage, protecting downstream components like ADC references. |
| 1.0kΩ typical clamp resistance (supplies on) | Provides predictable current limiting during ±25V faults, allowing robust design of fault-current paths in safety-critical systems. |
Applications
| Avionics Sensor Multiplexing | Industrial Redundant I/O |
|---|---|
|
Use Scenario: Multiplexing multiple ±10V aircraft engine temperature and pressure transducers into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: Fault-protected 4-to-1 analog switch routing conditioned sensor signals while surviving lightning-induced transients on unpowered lines. 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 analog control signals in a nuclear plant safety system with independent power domains. IC Role / Device Role / Timing Role: High-voltage analog switch ensuring seamless handover with <135ns break-before-make delay and guaranteed OFF state during power loss. Use Value: Meets IEC 61508 SIL-2 requirements for hardware fault tolerance by maintaining isolation during supply brownouts and fault events. |
| Process Control Data Acquisition | High-Voltage Test Equipment |
|
Use Scenario: Routing 4× 0–24V industrial current-loop signals (4–20mA with shunt) into a shared instrumentation amplifier stage. IC Role / Device Role / Timing Role: Single-supply (+24V) 4-to-1 mux with rail-to-rail capability and ±40V fault tolerance on unpowered inputs during field wiring errors. Use Value: Withstands accidental contact with 48V DC distribution buses during maintenance, preventing field-replacement of entire DAQ modules. |
Use Scenario: Switching calibration reference voltages (±10V, ±20V) into automated test equipment (ATE) front-end amplifiers during self-test sequences. IC Role / Device Role / Timing Role: Precision analog switch with 400Ω max RON matching (≤10Ω) ensuring <0.05% gain error across voltage ranges. Use Value: Enables traceable NIST-calibrated switching without recalibration after channel changes, reducing test cycle time by 18%. |
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 electrical specs, but in 14-pin narrow SO package (surface-mount); -40°C to +85°C rating matches E-grade. | Better suited for space-constrained PCBs and automated SMT assembly; lacks through-hole mechanical stability. | Select MAX4534ESD+ for high-density industrial controllers; retain MAX4534EUD+ for prototyping, repair, or vibration-prone avionics mounts. |
| ADG508FBRZ | 8-channel, ±15V-rated fault-protected mux; higher on-resistance (450Ω max); slower fault response (100ns typ). | Offers greater channel density but lower speed and less robust fault immunity - unsuitable for fast transient environments. | Choose ADG508FBRZ only when expanding beyond 4 channels is mandatory and 20ns fault response is not required. |
Compared with MAX4534ESD+ and ADG508FBRZ, the MAX4534EUD+ uniquely balances through-hole reliability, 20ns fault response, and ±40V power-off protection - making it the preferred choice for safety-critical field-deployed systems where mechanical robustness and transient immunity are non-negotiable.
Availability
MAX4534EUD+ is available at Aetrix Electronics and suitable for avionics sensor multiplexing, industrial redundant I/O, and high-voltage test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4534EUD+ 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 MAX4534EUD+ belongs to Maxim's fault-protected analog switch family, engineered specifically for signal routing in environments with unpredictable overvoltage events, such as aerospace data acquisition and process control systems.
FAQ
What is the maximum allowable voltage on NO pins when MAX4534EUD+ supplies are powered off?
The MAX4534EUD+ guarantees ±40V fault protection on NO1–NO4 pins with supplies off. This means each NO pin remains high-impedance and undamaged when subjected to voltages from –40V to +40V relative to GND, provided COM is grounded or referenced within supply rails. Exceeding ±40V risks permanent damage per Absolute Maximum Ratings.
Does MAX4534EUD+ support single-supply operation, and what is the minimum voltage?
Yes, MAX4534EUD+ supports single-supply operation with V− tied to GND and V+ ranging from +9V to +36V. The minimum valid single supply is +9V - operation below this violates the Absolute Maximum Rating for V+ to V− differential and may result in incomplete turn-on or increased on-resistance beyond 400Ω.
Can COM pin be safely driven with a voltage outside V+ and V− rails in MAX4534EUD+?
No. The COM pin of MAX4534EUD+ is not fault-protected. Applying any voltage to COM outside the range V− to V+ forward-biases internal ESD diodes, causing excessive current flow that can permanently damage the device. COM must always remain within the supply rails during both normal and fault conditions.
What is the significance of the 150mV overvoltage clamp threshold in MAX4534EUD+?
The 150mV threshold defines the voltage margin beyond V+ or below V− at which the MAX4534EUD+ triggers fault detection and clamps COM. For example, with ±15V supplies, a NO input exceeding +15.15V activates positive-fault clamping to V+. This tight tolerance ensures rapid response without false triggering from normal signal overshoot or noise.
How does enable logic behave during power-down in MAX4534EUD+?
In MAX4534EUD+, all channels automatically go to OFF state when V+ or V− drops below operational thresholds - regardless of EN pin voltage. This "power-off disable" feature ensures no analog path remains active during brownout or shutdown, eliminating backfeed risks in multi-rail systems and meeting IEC 61000-4-5 surge immunity requirements.
MAX4534EUD+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4534EUD+ FAQ
1.How can I place an order for MAX4534EUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4534EUD+ 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 MAX4534EUD+ reliable?
The price and inventory of MAX4534EUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4534EUD+ is usually 5 days.
3.What payment methods are accepted for MAX4534EUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4534EUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4534EUD+?
MAX4534EUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4534EUD+ 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 MAX4534EUD+?
For technical support, including MAX4534EUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4534EUD+ requirements.
6.How does Aetrix verify that MAX4534EUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4534EUD+ 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 MAX4534EUD+ meets industry standards.
7.What is the process for return or replacement of MAX4534EUD+?
All MAX4534EUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4534EUD+, 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 MAX4534EUD+ part is unused and in its original packaging.
Return procedure for MAX4534EUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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