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Analog Devices Inc./Maxim Integrated MAX4533EPP
- Part No.:
- MAX4533EPP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4533EPP.pdf
- Description:
- IC SWITCH SPDT X 4 175OHM 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,137
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Product details
Overview
MAX4533EPP from Maxim Integrated is a quad SPDT analog switch with rail-to-rail signal handling, ±25V fault protection (power on) and ±40V fault protection (power off), 175Ω max on-resistance at ±15V supplies, and TTL/CMOS-compatible logic inputs-designed for high-reliability signal routing in test equipment and industrial data-acquisition systems.
For engineers reviewing the MAX4533EPP datasheet, MAX4533EPP pinout, MAX4533EPP application, or MAX4533EPP equivalent, key selection criteria include fault-protection voltage limits, COM/NO/NC terminal behavior during overvoltage, on-resistance matching across channels, break-before-make timing, and compatibility with dual (±4.5V to ±18V) or single (+9V to +36V) supply configurations.
Technical Context
The MAX4533EPP uses parallel N-channel and P-channel MOSFETs per switch path, enabling rail-to-rail conduction and low 175Ω max on-resistance. Internal voltage sensors monitor NO_/NC_ pins against V+ and V− rails; when overvoltage exceeds ~150mV, the switch disconnects and clamps COM_ to the appropriate supply rail via dedicated clamp transistors (N2/P2).
Fault response occurs in 20ns (typ), with ±10mA clamp current capability and 1kΩ typ clamp resistance. The device requires no power-supply sequencing and remains fully off with power removed-ensuring safe default state in redundant systems and portable instruments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 175Ω at ±15V supplies - ensures minimal signal attenuation and thermal drift in precision analog paths |
| On-Resistance Match | 10Ω max between channels - critical for matched gain/phase in differential or multiplexed sensor interfaces |
| Fault Protection | ±25V with power on, ±40V with power off - protects downstream circuitry from transient overvoltages without external components |
| Logic Thresholds | +0.8V low / +2.4V high - guarantees reliable TTL and CMOS compatibility across ±15V or +12V supply operation |
| Turn-On/Off Time | 20ns (typ) - supports high-speed switching in automated test equipment and real-time data acquisition |
| Off-Leakage Current | 0.5nA at +25°C - preserves signal integrity in high-impedance sensor front-ends and battery-powered systems |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - enables flexible integration into legacy ±15V and modern wide-input industrial rails |
Pinout & Package
MAX4533EPP is packaged in a 20-pin plastic DIP (dual in-line package) with 0.3-inch width, lead finish matte tin, and operating temperature range of −40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 (IN1–IN4) | Digital control inputs | Accept TTL/CMOS logic; drive internal level translators to switch N/P FETs - no external pull-ups required |
| 2, 9, 12, 19 (NO1–NO4) | Normally open analog terminals | Fault-protected input/output; bidirectional when within rails; withstands ±40V with power off |
| 3, 8, 13, 18 (COM1–COM4) | Analog common outputs | Clamped to V+ or V− during fault; delivers up to ±10mA load current - connects to ADC/DAC/mux signal path |
| 4, 7, 14, 17 (NC1–NC4) | Normally closed analog terminals | Fault-protected input/output; electrically identical to NO_ pins - enables true SPDT redundancy |
| 5 (V−) | Negative analog supply | Bias for P-channel FETs and clamp circuitry; must be connected even in single-supply mode (GND referenced) |
| 6 (GND) | Digital ground reference | Reference for logic inputs only; isolated from analog signal paths - prevents digital noise coupling |
| 15 (N.C.) | No internal connection | Unbonded pad; must remain unconnected - floating or tied to GND/V+ degrades ESD performance |
| 16 (V+) | Positive analog/digital supply | Drives N-channel FETs, logic translators, and clamp circuitry - sets logic thresholds and on-resistance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal conduction | Supports full-swing analog signals from V− to V+ without distortion or clipping - essential for ±10V sensor ranges |
| Automatic output clamping | COM_ terminal clamps to V+ or V− within 20ns during overvoltage - eliminates need for external TVS or diode clamps |
| All-switches-off default | Zero current flow through all channels when power is removed - prevents backfeeding or unintended signal paths |
| No supply sequencing required | V+, V−, and GND may be powered in any order - simplifies power-up sequencing in multi-rail industrial controllers |
| Break-before-make switching | Guaranteed tBBM ≥ 5ns - prevents momentary shorting between NC and NO paths during channel reconfiguration |
Applications
| Redundant Signal Routing | Portable Test Instrumentation |
|---|---|
Use Scenario: Dual-path analog signal selection in avionics backup systems where failure of one channel must not compromise integrity of the other. IC Role / Device Role / Timing Role: Quad SPDT switch providing independent fault-isolated paths; each channel operates autonomously under ±25V fault conditions. Use Value: Eliminates need for external fault-detection circuitry and relay-based redundancy - reduces board area and BOM count by 3×. | Use Scenario: Multiplexing multiple sensor inputs (thermocouple, strain gauge, RTD) into a single handheld DMM or calibrator. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch enabling accurate DC-coupled measurements without signal degradation. Use Value: 0.5nA off-leakage at +25°C preserves microvolt-level resolution in high-Z sensor interfaces. |
| Industrial Data Acquisition | Communications Channel Protection |
Use Scenario: Front-end signal conditioning in PLC I/O modules handling ±10V process signals across harsh factory environments. IC Role / Device Role / Timing Role: Fault-protected SPDT switch isolating field wiring from sensitive ADC inputs; clamps transients before they reach measurement circuitry. Use Value: ±40V fault tolerance with power off prevents latch-up during hot-swap or maintenance - extends system uptime. | Use Scenario: Protecting analog voice/data lines in telecom line cards exposed to lightning-induced surges or accidental AC mains contact. IC Role / Device Role / Timing Role: Analog switch placed between line interface IC and codec; acts as fail-safe barrier during overvoltage events. Use Value: 20ns fault response time limits energy delivered to downstream components - meets ITU-T K.20 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4532EPP | Triple SPDT configuration (3 channels vs. 4); identical fault protection, on-resistance, and timing specs | Suitable for systems requiring fewer channels but same ruggedness - saves space in compact designs | Select when channel count reduction is acceptable and PCB layout favors smaller footprint |
| ADG1434BRUZ | 4-channel SPDT with ±40V fault protection, but higher 4.5Ω typical on-resistance and no rail-to-rail signal handling below ±5V | Better suited for low-voltage precision applications (< ±5V), less ideal for ±10V industrial signal chains | Prefer for low-voltage, low-distortion audio or medical sensing; avoid for ±15V test equipment |
Compared with MAX4532EPP and ADG1434BRUZ, the MAX4533EPP uniquely balances quad-channel density, 175Ω low on-resistance at full rail, and guaranteed rail-to-rail operation - making it optimal for industrial DAQ and test instrumentation where signal fidelity and fault resilience are co-prioritized.
Availability
MAX4533EPP is available at Aetrix Electronics and suitable for redundant/backup systems, portable instrumentation, and industrial data-acquisition applications requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C operation.
Supply support for MAX4533EPP 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 industrial, automotive, and communications markets - emphasizing ruggedness, integration, and reliability.
The MAX4533 product line delivers fault-protected analog switching for mission-critical signal routing where overvoltage resilience, rail-to-rail conduction, and predictable fail-safe behavior are mandatory design requirements.
FAQ
What is the maximum fault voltage the MAX4533EPP can withstand with power applied?
The MAX4533EPP withstands ±25V fault voltage on NO_ or NC_ terminals when power is applied (V+ and V− active). This rating applies with ±15V supplies; exceeding ±25V risks permanent damage. The device also supports ±40V faults with power off - a critical safety feature during maintenance or hot-swap scenarios. All fault protection is inherent and requires no external components.
Does the MAX4533EPP support single-supply operation, and what is the valid voltage range?
Yes, the MAX4533EPP supports single-supply operation with V− connected to GND and V+ ranging from +9V to +36V. In this configuration, the fault-free analog signal range is 0V to V+, and fault protection extends to +40V on NO_/NC_ with power off. On-resistance increases to 390Ω max at +12V supply, versus 175Ω max at ±15V dual supply - a trade-off designers must account for in precision applications.
How does the MAX4533EPP behave during an overvoltage fault condition?
During an overvoltage fault, the MAX4533EPP immediately disconnects the affected NO_ or NC_ terminal from COM_ (within 20ns), placing both in high-impedance state with <0.5nA leakage. Simultaneously, COM_ is clamped to V+ or V− via internal clamp transistors, delivering up to ±10mA to the load. This ensures downstream circuitry sees only the rail voltage - not the fault - preserving system integrity without external protection devices.
Is the MAX4533EPP pin-compatible with older industry-standard switches?
Yes, the MAX4533EPP is pin-compatible with the MAX333 and MAX333A - including identical 20-pin DIP footprint, pin numbering, and functional assignment. This allows drop-in replacement in legacy designs while upgrading fault protection from ±15V to ±25V (power on) and adding rail-to-rail signal handling. No PCB or firmware changes are required for migration.
What is the temperature range specification for the MAX4533EPP variant?
MAX4533EPP is rated for operation from −40°C to +85°C - qualifying it for extended-temperature industrial, avionics, and outdoor instrumentation applications. This exceeds the commercial-grade MAX4533CAP (0°C to +70°C) and precedes the military-grade MAX4533MJP (−55°C to +125°C). All electrical specifications in the datasheet are guaranteed across this full range unless otherwise noted.
MAX4533EPP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 175Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1.5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -66dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
MAX4533EPP FAQ
1.How can I place an order for MAX4533EPP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4533EPP 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 MAX4533EPP reliable?
The price and inventory of MAX4533EPP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4533EPP is usually 5 days.
3.What payment methods are accepted for MAX4533EPP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4533EPP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4533EPP?
MAX4533EPP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4533EPP 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 MAX4533EPP?
For technical support, including MAX4533EPP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4533EPP requirements.
6.How does Aetrix verify that MAX4533EPP is sourced from the original manufacturer or authorized distributors?
All MAX4533EPP 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 MAX4533EPP meets industry standards.
7.What is the process for return or replacement of MAX4533EPP?
All MAX4533EPP units undergo pre-shipment inspection (PSI). If there is an issue with MAX4533EPP, 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 MAX4533EPP part is unused and in its original packaging.
Return procedure for MAX4533EPP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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