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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:2,405
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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, key selection criteria include fault-protection voltage margins, COM_/NO_/NC_ terminal behavior under overvoltage, on-resistance matching across channels, and compatibility with dual (±4.5V to ±18V) or single (+9V to +36V) supply configurations.
Technical Context
The MAX4533CWP+ uses parallel N- and P-channel MOSFETs per switch path, enabling rail-to-rail conduction and low on-resistance (125Ω typ). Internal voltage sensors monitor NO_/NC_ terminals against V+ and V− rails; when input exceeds rail by ~150mV, the switch disconnects and clamps COM_ to the appropriate supply via dedicated clamp FETs (N2/P2).
Fault response time is 20ns (typ), with ±10mA clamp output current capability and 1kΩ typ clamp resistance. Break-before-make timing is 5ns (typ), and charge injection is 2.5pC (typ), supporting precision signal switching without transient glitches during fault transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 175Ω at ±15V - ensures minimal signal attenuation in precision analog paths |
| Fault Protection (power on) | ±25V on NO_/NC_ - protects downstream circuitry from overvoltage transients while powered |
| Fault Protection (power off) | ±40V on NO_/NC_ - maintains robustness during system power-down or brownout |
| Supply Range | Dual: ±4.5V to ±18V; Single: +9V to +36V - supports wide industrial and test-equipment supply architectures |
| Logic Thresholds | +0.8V low / +2.4V high - guarantees interoperability with both TTL and CMOS drivers at ±15V or +12V supplies |
| Off-Leakage (25°C) | 0.5nA on NO_/NC_ - preserves signal integrity in high-impedance sensor or reference circuits |
| Fault Response Time | 20ns (typ) - enables fast isolation before fault energy propagates to sensitive nodes |
Pinout & Package
MAX4533CWP+ is housed in a 20-pin Wide SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin pitch is 0.050", body width 7.5mm, and thermal performance rated for 800mW at +70°C (derating 10.00mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 (IN1–IN4) | Logic control inputs | Accept TTL/CMOS-level signals to select NO or NC path per channel; no sequencing required during power-up/down |
| 2, 9, 12, 19 (NO1–NO4) | Normally open analog inputs | Fault-protected terminals; conduct to COM when IN = logic high; withstand ±40V with power off |
| 3, 8, 13, 18 (COM1–COM4) | Analog common outputs | Rail-to-rail bidirectional node; clamped to V+ or V− during fault; delivers up to ±10mA load current |
| 4, 7, 14, 17 (NC1–NC4) | Normally closed analog inputs | Fault-protected terminals; conduct to COM when IN = logic low; same protection specs as NO pins |
| 5 (V−) | Negative analog supply | Bipolar supply rail; sets lower signal boundary and gate drive for P-channel FETs |
| 6 (GND) | Digital ground reference | Reference for logic inputs only; isolated from analog signal paths except via ESD diodes to V+/V− |
| 15 (N.C.) | No internal connection | Unused pin; must be left floating or tied to GND per layout best practice (no electrical function) |
| 16 (V+) | Positive analog/digital supply | Primary supply for logic, level translators, and N-channel FET gates; defines upper signal boundary |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Enables full dynamic range utilization across ±15V or +12V supplies without clipping or distortion |
| Output clamping during fault | Prevents undefined COM_ voltage states by actively limiting output to V+ or V−, eliminating transition glitches |
| All switches off with power off | Guarantees signal isolation during power loss-critical for safety-critical backup and avionics systems |
| No power-supply sequencing required | Simplifies system design by allowing V+, V−, and logic inputs to ramp independently at power-up/down |
| 10Ω max on-resistance match | Ensures matched gain/attenuation across channels in multiplexed instrumentation front-ends |
Applications
| Test Equipment Signal Routing | Redundant Data-Acquisition Channels |
|---|---|
Use Scenario: Automated test systems route multiple sensor inputs to shared ADCs while protecting against miswiring or transient surges. IC Role / Device Role: Quad SPDT switch selects between primary and backup sensor paths; fault protection prevents damage from ±25V probe faults. Use Value: Eliminates need for external TVS or series resistors, reducing BOM count and board space in PXI and LXI platforms. |
Use Scenario: Industrial PLCs maintain uninterrupted measurement during sensor failure by switching to redundant analog inputs. IC Role / Device Role: Fault-protected switch isolates failed channel and routes backup signal to COM output without interrupting operation. Use Value: Enables hot-swap capability and continuous monitoring-meeting IEC 61508 SIL-2 functional safety requirements. |
| Avionics Sensor Interface | Portable Instrument Multiplexing |
Use Scenario: Flight control systems interface with multiple pressure/temperature transducers operating across wide temperature ranges (−55°C to +125°C). IC Role / Device Role: MAX4533CWP+ provides rail-to-rail switching of ±10V sensor outputs while surviving ±40V faults during power-off maintenance. Use Value: Meets DO-160 Section 22 lightning-induced transient immunity without additional protection circuitry. |
Use Scenario: Handheld multimeters and oscilloscope front-ends switch between voltage, current, and resistance measurement paths. IC Role / Device Role: Low on-resistance (175Ω max) and <0.5nA off-leakage preserve accuracy in µA-range current measurements. Use Value: Supports 6½-digit resolution without calibration drift from switch-induced errors or leakage currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4533EWP+ | Extended temperature range (−40°C to +85°C); identical pinout, electrical specs, and fault protection | Required for automotive engine bay or outdoor industrial deployments where ambient exceeds +70°C | Select MAX4533EWP+ when operating beyond 0°C to +70°C commercial grade limits. |
| ADG1434BRUZ | Quad SPDT, ±15V supply, 4.7Ω on-resistance (lower), but only ±20V fault protection (power on) and no power-off fault rating | Suitable for high-precision lab equipment where ultra-low RON matters more than extreme fault margin | Choose ADG1434BRUZ only if fault exposure is limited and sub-5Ω RON is mandatory for signal fidelity. |
Compared with MAX4533EWP+, the MAX4533CWP+ trades extended temperature capability for cost and qualification simplicity in commercial-grade instruments; compared with ADG1434BRUZ, it prioritizes robust fault resilience over minimal on-resistance-making it optimal for uncontrolled field environments.
Availability
MAX4533CWP+ is available at Aetrix Electronics and suitable for test equipment, industrial data-acquisition, and avionics systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, communications, and computing applications.
The MAX4533CWP+ belongs to Maxim's fault-protected analog switch family, engineered specifically for mission-critical signal routing where overvoltage resilience, rail-to-rail operation, and guaranteed isolation during power loss are non-negotiable.
FAQ
What is the maximum allowable fault voltage on NO/NC pins of the MAX4533CWP+ with power applied?
The MAX4533CWP+ supports ±25V fault voltage on NO and NC pins when power is applied (V+ and V− active), verified per Absolute Maximum Ratings table. Exceeding this limit-even briefly-risks permanent damage. This rating applies with ±15V supplies; derating is required for other supply voltages per datasheet Note 2.
Does the MAX4533CWP+ require power-supply sequencing during startup or shutdown?
No-the MAX4533CWP+ does not require power-supply sequencing. V+, V−, and digital inputs may ramp independently during power-up or power-down without causing latch-up or undefined states. This is confirmed in the Features list and validated in the Applications Information section on page 9 of the datasheet.
How does the MAX4533CWP+ behave during an overvoltage fault on a NO or NC pin?
During an overvoltage fault, the MAX4533CWP+ disconnects the affected NO or NC pin from COM and clamps COM to the appropriate supply rail (V+ for positive faults, V− for negative faults) with up to ±10mA output current. The clamp resistance is 1kΩ (typ), and recovery time is 2.5µs (positive) or 1.3µs (negative), per Typical Operating Characteristics.
Is the MAX4533CWP+ pin-compatible with the MAX333A?
Yes-the MAX4533CWP+ is explicitly stated as pin-compatible with the industry-standard MAX333 and MAX333A in the General Description. Pin mapping, package outline, and logic interface are identical, enabling drop-in replacement in existing designs using those legacy parts.
What is the on-resistance matching specification for the MAX4533CWP+ across its four switch channels?
The MAX4533CWP+ guarantees ≤10Ω maximum on-resistance mismatch (∆RON) between any two channels under identical conditions (V+ = +15V, V− = −15V, TA = +25°C), as specified in the Electrical Characteristics table on page 2 of the datasheet. This ensures consistent gain/attenuation in multi-channel multiplexers.
MAX4533CWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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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