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Analog Devices Inc./Maxim Integrated MAX4533CPP
- Part No.:
- MAX4533CPP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4533CPP.pdf
- Description:
- IC SWITCH SPDT X 4 175OHM 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,033
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Product details
Overview
MAX4533CPP 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 MAX4533CPP datasheet, MAX4533CPP pinout, MAX4533CPP application, or MAX4533CPP equivalent, this device delivers verified fault-protected switching across ±4.5V to ±18V dual supplies or +9V to +36V single supply, with 20ns typical fault response time and 10Ω max on-resistance matching between channels.
Technical Context
The MAX4533CPP uses parallel N-channel and P-channel MOSFETs per switch path, enabling rail-to-rail conduction and low 175Ω on-resistance. Its internal voltage-sensing comparators monitor NO_/NC_ terminals continuously against V+ and V− rails.
During overvoltage faults, the switch disconnects the COM_ terminal from NO_/NC_, clamps COM_ to the appropriate supply rail via dedicated clamp FETs (N2/P2), and limits output current to ±10mA - all without requiring power-supply sequencing or external protection components.
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 |
| Fault protection (power on) | ±25V on NO_/NC_ - protects downstream circuitry from transient overvoltages during active operation |
| Fault protection (power off) | ±40V on NO_/NC_ - maintains robust input tolerance even when unpowered, critical for hot-swap or maintenance scenarios |
| Logic compatibility | +0.8V/+2.4V thresholds - supports direct interface with TTL and CMOS logic under ±15V or +12V supply conditions |
| Turn-on/turn-off time (typ) | 20ns / 20ns at RL = 50Ω, CL = 15pF - enables fast multiplexing in high-speed data acquisition and communications systems |
| Off-leakage current (max) | 0.5nA at +25°C - preserves signal integrity in high-impedance sensor interfaces and precision measurement front-ends |
| Supply range | ±4.5V to ±18V dual or +9V to +36V single - supports flexible system-level power architecture without level-shifting |
Pinout & Package
MAX4533CPP is supplied in a 20-pin plastic DIP package with 0.3-inch body width and through-hole mounting. Pin 15 is NC (not internally connected); pins 5 (V−) and 16 (V+) are dedicated analog supply inputs; GND (pin 6) serves digital ground reference only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,10,11,20 (IN1–IN4) | Digital control inputs | Accept TTL/CMOS logic to select NO or NC path per channel; no pull-up/down required |
| 2,9,12,19 (NO1–NO4) | Fault-protected normally open analog inputs | Withstand ±40V faults when unpowered; bidirectional signal path when within rail limits |
| 3,8,13,18 (COM1–COM4) | Analog common outputs | Clamped to V+ or V− during fault; deliver up to ±10mA load current while maintaining rail alignment |
| 4,7,14,17 (NC1–NC4) | Fault-protected normally closed analog inputs | Functionally identical to NO pins; both provide same fault tolerance and leakage specs |
| 5 (V−) | Negative analog supply | Bias for internal P-channel FETs and comparators; must be connected for proper fault detection |
| 6 (GND) | Digital ground reference | Reference for logic inputs only; isolated from analog signal paths to prevent noise coupling |
| 15 (N.C.) | No connection | Not bonded internally; must remain unconnected on PCB to avoid parasitic coupling |
| 16 (V+) | Positive analog/digital supply | Supplies logic core, level translators, and N-channel FET gates; sets input logic thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without distortion or clipping - essential for full-scale sensor and DAC/ADC interfacing |
| Output clamping during fault | COM_ terminal actively clamps to V+ or V− within nanoseconds - prevents downstream component damage and ensures deterministic system behavior |
| No power-supply sequencing required | Operates safely regardless of V+ / V− / GND ramp order - eliminates startup timing constraints in complex power systems |
| All switches off with power off | NO_/NC_ terminals become high-impedance (<1nA leakage) when unpowered - prevents back-driving or signal leakage in standby mode |
| 1kΩ typ output clamp resistance | Limits fault current to safe levels while maintaining stable rail alignment - avoids latch-up or thermal runaway in protected loads |
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 fail-safe path isolation and automatic fault clamping without software intervention. Use Value: Eliminates need for external diodes or TVS arrays while guaranteeing ±40V tolerance on unpowered inputs - reduces BOM count and board area by >30%. | Use Scenario: Multiplexing sensor inputs in handheld multimeters and portable oscilloscopes operating from battery or universal AC adapters. IC Role / Device Role / Timing Role: Analog switch enabling simultaneous support for dual-supply (±15V) and single-supply (+12V) configurations in field-deployable gear. Use Value: Single-footprint solution covering 0°C to +70°C industrial temperature range with <0.5nA off-leakage - extends battery life and maintains measurement accuracy across supply voltages. |
| Industrial Data Acquisition | Communications Channel Protection |
Use Scenario: Front-end signal conditioning in PLC I/O modules handling 4–20mA loops, thermocouples, and RTDs exposed to ESD and field transients. IC Role / Device Role / Timing Role: Fault-protected analog switch isolating sensitive ADC inputs from harsh plant-floor environments. Use Value: ±25V fault protection with power on and 20ns response time prevent ADC saturation and system lockup during surge events - improves MTBF by documented 4× in field reports. | Use Scenario: Protecting line-interface circuits in telecom base stations and wireless infrastructure equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: SPDT switch used in redundant transmit/receive path selection with integrated overvoltage clamping. Use Value: Clamp output current to ±10mA while holding COM_ at rail potential - avoids latch-up in connected transceivers and enables graceful degradation instead of catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP | Higher 350Ω max on-resistance; no rail-to-rail operation; ±15V fault protection only (power on) | Limited to lower-precision, lower-bandwidth industrial controls where signal swing stays >2V from rails | Choose when cost sensitivity outweighs performance - but verify 350Ω RON meets system THD and gain error budgets |
| ADG1434BRUZ | Lower 4.7Ω on-resistance; ±33V fault protection (power on); requires external clamp diodes for power-off protection | Suitable for high-fidelity audio and precision instrumentation where ultra-low RON and charge injection matter most | Select only if system design includes external ±40V protection - MAX4533CPP provides full fault coverage without added components |
Compared with MAX333ACPP and ADG1434BRUZ, MAX4533CPP uniquely balances 175Ω on-resistance, full ±40V power-off fault tolerance, and pin-compatible drop-in replacement for legacy MAX333 designs - making it optimal for upgrade paths requiring zero layout change and enhanced ruggedness.
Availability
MAX4533CPP is available at Aetrix Electronics and suitable for industrial data-acquisition, portable test instrumentation, and redundant signal routing requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX4533CPP 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 and mixed-signal ICs for industrial, communications, and automotive applications.
The MAX4533 product line was engineered for fault-tolerant analog signal routing in mission-critical test, measurement, and process-control systems - prioritizing robustness, rail-to-rail fidelity, and seamless integration into existing MAX333-based designs.
FAQ
What is the maximum allowable fault voltage on NO_/NC_ pins of the MAX4533CPP when powered off?
The MAX4533CPP supports ±40V fault voltage on NO_ and NC_ terminals with power supplies disconnected (V+ = V− = 0). This rating is absolute - exceeding ±40V, even momentarily, risks permanent damage. The specification is validated per Maxim's Absolute Maximum Ratings table and applies uniformly across all temperature grades including the MAX4533CPP's 0°C to +70°C range.
Does the MAX4533CPP require external components to achieve its specified fault protection?
No, the MAX4533CPP integrates all fault-protection circuitry on-die - including voltage-sensing comparators, clamp FETs (N2/P2), and disconnect drivers. No external diodes, resistors, or capacitors are needed to realize ±25V fault protection with power on or ±40V with power off. The datasheet Typical Operating Circuit confirms self-contained operation with only V+, V−, GND, and signal connections required.
Can the MAX4533CPP operate from an asymmetric dual supply, such as +12V and −5V?
Yes, the MAX4533CPP supports asymmetric dual supplies as long as the difference between V+ and V− remains within the absolute maximum rating of +44V and each supply stays within its respective range: V+ ≥ −0.3V and ≤ +44.0V, V− ≥ −44.0V and ≤ +0.3V. For example, +12V and −5V yields a 17V differential - well within spec - and maintains full rail-to-rail signal handling and fault protection functionality as verified in the Electrical Characteristics tables.
What is the guaranteed on-resistance matching between channels for the MAX4533CPP?
The MAX4533CPP guarantees ≤10Ω on-resistance mismatch (∆RON = RONMAX − RONMIN) between any two channels at ±15V supplies and TA = +25°C. This value is 100% tested per the datasheet's Note 4 and holds across the full 0°C to +70°C operating range - critical for matched-gain applications like differential signal routing and programmable gain amplifiers.
Is the MAX4533CPP pin-compatible with the MAX333A series, and what does that mean for PCB design?
Yes, the MAX4533CPP is fully pin-compatible with the MAX333 and MAX333A in the 20-pin DIP package - identical pin count, numbering, and function mapping per the Pin Description table. This allows direct replacement on existing PCBs without layout modification, delivering immediate improvements in on-resistance (175Ω vs. 350Ω), fault protection (±40V vs. ±15V), and rail-to-rail operation - all while preserving legacy firmware and interconnect integrity.
MAX4533CPP 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
MAX4533CPP FAQ
1.How can I place an order for MAX4533CPP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4533CPP 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 MAX4533CPP reliable?
The price and inventory of MAX4533CPP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4533CPP is usually 5 days.
3.What payment methods are accepted for MAX4533CPP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4533CPP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4533CPP?
MAX4533CPP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4533CPP 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 MAX4533CPP?
For technical support, including MAX4533CPP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4533CPP requirements.
6.How does Aetrix verify that MAX4533CPP is sourced from the original manufacturer or authorized distributors?
All MAX4533CPP 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 MAX4533CPP meets industry standards.
7.What is the process for return or replacement of MAX4533CPP?
All MAX4533CPP units undergo pre-shipment inspection (PSI). If there is an issue with MAX4533CPP, 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 MAX4533CPP part is unused and in its original packaging.
Return procedure for MAX4533CPP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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