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Analog Devices Inc./Maxim Integrated MAX4533CWP
- Part No.:
- MAX4533CWP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4533CWP.pdf
- Description:
- IC SWITCH SPDT X 4 175OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,655
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Product details
Overview
MAX4533CWP from Maxim Integrated is a quad SPDT analog switch with rail-to-rail signal handling, ±25V fault protection (power on) and ±40V (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 MAX4533CWP datasheet, MAX4533CWP pinout, MAX4533CWP application, or MAX4533CWP equivalent, this device delivers fault-protected analog switching with break-before-make timing, low charge injection (1.5pC typ), and dual-supply (±4.5V to ±18V) or single-supply (+9V to +36V) operation-critical for redundant systems requiring unambiguous rail-clamped outputs during overvoltage events.
Technical Context
The MAX4533CWP implements a parallel N-channel/P-channel MOSFET architecture per channel, enabling true rail-to-rail conduction and fast fault response (20ns typ). Its internal voltage-sensing comparators monitor NO_/NC_ terminals continuously against V+ and V− rails.
During fault conditions, the switch disconnects the COM_ terminal from the overvoltage input and clamps COM_ to the appropriate supply rail via dedicated clamp transistors (N2/P2), delivering up to ±10mA load current while maintaining ≤1kΩ clamp resistance-ensuring stable output behavior without transition glitches.
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 without latch-up |
| Fault protection (power off) | ±40V on NO_/NC_ - enables safe hot-swap or maintenance in unpowered systems |
| Logic thresholds | +0.8V / +2.4V - guarantees interoperability with both TTL and CMOS drivers across ±15V or +12V supply configurations |
| Off-leakage current (25°C) | 0.5nA - preserves signal integrity in high-impedance sensor interfaces and battery-powered instruments |
| Turn-on time (typ) | 20ns at ±15V - supports high-speed multiplexing in automated test equipment (ATE) and communications switching |
| Charge injection (typ) | 1.5pC - minimizes voltage step errors in sample-and-hold and precision ADC front-ends |
Pinout & Package
MAX4533CWP is housed in a 20-pin Wide SO package (SOIC-W), 7.5mm body width, 1.27mm pitch, RoHS-compliant, with exposed pad optional per variant. Thermal resistance θJA = 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1,10,11,20) | Digital control inputs | Accept TTL/CMOS logic; drive internal level translators to switch N/P FETs synchronously |
| NO1–NO4 (Pins 2,9,12,19) | Normally open analog inputs | Fault-protected; bidirectional when within rails; high-impedance during fault or OFF state |
| COM1–COM4 (Pins 3,8,13,18) | Analog common outputs | Clamped to V+ or V− during fault; carries full signal current when ON; not fault-protected |
| NC1–NC4 (Pins 4,7,14,17) | Normally closed analog inputs | Fault-protected; functionally identical to NO_ pins; no internal connection between NC_ and NO_ |
| V+ (Pin 16) | Positive supply | Powers analog switches and digital logic; range +9V to +36V (single) or ±4.5V to ±18V (dual) |
| V− (Pin 5) | Negative supply | Required for dual-supply operation; sets lower rail for rail-to-rail conduction and fault sensing |
| GND (Pin 6) | Digital ground reference | Reference for logic inputs only; no direct connection to analog signal path |
| N.C. (Pin 15) | No connection | Not internally bonded; must be left floating or tied to GND per PCB layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without distortion or clipping-enables full dynamic range utilization in ±15V instrumentation |
| Output clamping during fault | COM_ actively clamped to V+ or V− with ≤1kΩ resistance and ±10mA drive-prevents undefined output states in safety-critical systems |
| No power-supply sequencing required | Operates correctly regardless of V+ / V− / GND ramp order-eliminates need for external power supervisors in multi-rail designs |
| Break-before-make timing | Guaranteed tBBM ≥ 5ns-prevents momentary shorting between NC_ and NO_ paths during channel switching |
| Pin compatibility with MAX333/MAX333A | Drop-in replacement for legacy designs-reduces redesign effort while upgrading fault tolerance and on-resistance |
Applications
| Redundant/Backup Systems | Test Equipment |
|---|---|
Use Scenario: Signal path selection between primary and backup sensor channels in avionics flight control units. IC Role / Device Role / Timing Role: Quad SPDT switch isolating faulted channels and routing valid signals to central processing with sub-20ns switching. Use Value: Prevents single-point failure propagation by clamping COM_ to rail during ±25V sensor faults-maintaining deterministic output behavior without software intervention. |
Use Scenario: Multiplexing DUT signals into shared measurement resources in automated test equipment (ATE). IC Role / Device Role / Timing Role: High-speed analog switch enabling 1-of-4 signal routing with <20ns turn-on and <5ns break-before-make timing. Use Value: Enables precise timing alignment across multiple DUTs using 175Ω matched on-resistance and 1.5pC low charge injection-minimizing settling error in 16-bit ADC acquisition. |
| Data-Acquisition Systems | Industrial Process Control |
Use Scenario: Channel selection in multi-sensor industrial DAQ modules interfacing thermocouples, RTDs, and 4–20mA transmitters. IC Role / Device Role / Timing Role: Fault-protected analog multiplexer routing sensor outputs to a shared instrumentation amplifier and ADC. Use Value: Survives field-induced transients up to ±40V (power-off) and ±25V (power-on), eliminating need for external TVS diodes on each sensor line-reducing BOM count and board area. |
Use Scenario: Isolating and routing analog control signals between PLC I/O modules and field actuators in hazardous environments. IC Role / Device Role / Timing Role: Robust signal switch providing galvanically isolated path selection with rail-clamped outputs during ESD or lightning-induced surges. Use Value: Maintains closed-loop stability by limiting COM_ excursion to V+/V− rails during ±25V faults-preventing actuator runaway or spurious trip events in SIL2-rated systems. |
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 fault protection beyond ±15V; requires strict supply sequencing | Limited to non-fault-prone lab environments; unsuitable for field-deployed or safety-critical systems | Select MAX333ACPP only if cost sensitivity outweighs fault tolerance and rail-to-rail performance requirements |
| ADG1414BRUZ | Lower 4.7Ω on-resistance but no integrated fault protection; requires external ±25V clamping circuitry | Demands additional PCB area and design validation for overvoltage resilience-increasing time-to-market | Choose ADG1414BRUZ when ultra-low on-resistance dominates, and system-level fault protection can be implemented externally |
Compared with MAX333ACPP and ADG1414BRUZ, the MAX4533CWP uniquely integrates ±40V power-off fault protection, rail-to-rail conduction, and pin compatibility with legacy MAX333-delivering higher system reliability without layout changes or external components.
Availability
MAX4533CWP is available at Aetrix Electronics and suitable for test equipment, industrial process control, and redundant/backup systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX4533CWP 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 industrial, automotive, and communications markets.
The MAX4533 product line targets fault-critical analog signal routing-designed specifically for applications where overvoltage resilience, rail-to-rail fidelity, and deterministic output clamping are mandatory design requirements.
FAQ
What is the operating temperature range for MAX4533CWP?
The MAX4533CWP is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range aligns with its Wide SO packaging and is validated across all electrical specifications-including on-resistance, leakage current, and fault response time-within this interval. The 'C' suffix explicitly denotes the 0°C to +70°C grade, distinguishing it from extended-range variants like MAX4533EWP (–40°C to +85°C) and MAX4533MJP (–55°C to +125°C). MAX4533CWP maintains full functionality without derating in standard industrial enclosures or benchtop test equipment environments.
Does MAX4533CWP require external protection diodes for fault conditions?
No, MAX4533CWP does not require external protection diodes. Its internal architecture provides integrated ±25V fault protection on NO_/NC_ terminals with power applied and ±40V protection with power removed-achieved through dedicated sensing comparators and clamp transistors (N2/P2) that actively limit COM_ to V+ or V−. External diodes would interfere with the specified fault response time (20ns typ) and compromise the guaranteed ±10mA clamp current capability. MAX4533CWP's self-contained protection eliminates BOM additions and layout complexity in high-reliability signal routing.
Can MAX4533CWP operate from a single +12V supply?
Yes, MAX4533CWP supports single-supply operation from +9V to +36V, including +12V. When V− is tied to GND, the device maintains rail-to-rail signal handling from 0V to +12V, with on-resistance rising to 260Ω (max) and fault protection limited to +25V on NO_/NC_. Logic thresholds remain TTL/CMOS-compatible (+0.8V/+2.4V), and all timing parameters-including 200ns typical turn-on time-are specified under +12V conditions. This configuration is widely used in portable instruments and +12V-powered data-acquisition modules where dual supplies are impractical.
How does MAX4533CWP handle simultaneous faults on multiple channels?
MAX4533CWP handles simultaneous faults independently per channel. Each of the four SPDT switches contains dedicated voltage-sensing circuitry (N3/P3 comparators) and clamp transistors (N2/P2), allowing NO1/NC1, NO2/NC2, etc., to enter fault mode without affecting other channels. During concurrent overvoltage events-e.g., +25V on NO1 and –25V on NC3-the corresponding COM1 and COM3 outputs clamp to +12V and –12V respectively, while unaffected channels (e.g., IN2 = LOW, COM2 = NC2) continue normal operation. This channel-level autonomy ensures functional safety in multi-sensor systems.
Is MAX4533CWP pin-compatible with MAX333A?
Yes, MAX4533CWP is fully pin-compatible with MAX333 and MAX333A across all 20-pin packages (SO, SSOP, DIP, CERDIP). Pin functions-including IN1–IN4, NO1–NO4, COM1–COM4, NC1–NC4, V+, V−, GND, and N.C.-match identically. This allows drop-in replacement in existing MAX333A layouts, upgrading fault protection from ±15V to ±25V (power on) and ±40V (power off), reducing on-resistance from 350Ω to 175Ω (max), and adding rail-to-rail signal handling-without PCB revision or firmware changes.
MAX4533CWP 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:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MAX4533CWP FAQ
1.How can I place an order for MAX4533CWP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4533CWP 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 MAX4533CWP reliable?
The price and inventory of MAX4533CWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4533CWP is usually 5 days.
3.What payment methods are accepted for MAX4533CWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4533CWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4533CWP?
MAX4533CWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4533CWP 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 MAX4533CWP?
For technical support, including MAX4533CWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4533CWP requirements.
6.How does Aetrix verify that MAX4533CWP is sourced from the original manufacturer or authorized distributors?
All MAX4533CWP 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 MAX4533CWP meets industry standards.
7.What is the process for return or replacement of MAX4533CWP?
All MAX4533CWP units undergo pre-shipment inspection (PSI). If there is an issue with MAX4533CWP, 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 MAX4533CWP part is unused and in its original packaging.
Return procedure for MAX4533CWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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