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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:2,057
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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 dual ±4.5V to ±18V or single +9V to +36V supplies, with nanoamp-level off-leakage, 20ns typical fault response, and pin compatibility with MAX333/MAX333A for drop-in replacement in legacy designs.
Technical Context
The MAX4533CPP+ uses parallel N-channel and P-channel MOSFETs per switch channel, enabling low on-resistance and true rail-to-rail analog conduction. Its internal voltage-sensing comparators monitor NO_/NC_ terminals continuously against V+ and V− rails to trigger fast clamping during overvoltage events.
Fault response relies on dedicated clamp circuitry (N2/P2) that forces COM_ to the appropriate supply rail within 20ns while isolating the faulty input with <1nA leakage. All four channels operate independently, with break-before-make timing of 5ns and no power-supply sequencing requirement during startup or shutdown.
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 | ±25V with power on, ±40V with power off - protects downstream circuitry without external components |
| Off-Leakage Current | 0.5nA at +25°C - preserves accuracy in high-impedance sensor or reference circuits |
| Supply Range | Dual ±4.5V to ±18V or single +9V to +36V - supports wide industrial and test-equipment voltage architectures |
| Logic Thresholds | +0.8V low / +2.4V high - guarantees interoperability with both TTL and CMOS drivers across supply configurations |
| Fault Response Time | 20ns typical - limits transient energy transfer during overvoltage events |
| Channel Matching (∆RON) | 10Ω max - enables matched gain/attenuation in differential or multiplexed signal chains |
Pinout & Package
MAX4533CPP+ is housed in a 20-pin plastic DIP package (0.300" width), through-hole mountable with standard 0.1" pitch. The package supports industrial temperature range (0°C to +70°C) and provides robust thermal dissipation for continuous operation at full fault-protection ratings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 (IN1–IN4) |
Logic control inputs | Accept TTL/CMOS-compatible digital signals to select NO or NC path per channel |
| 2, 9, 12, 19 (NO1–NO4) |
Fault-protected normally open analog inputs | Withstand ±40V faults (power off); bidirectional signal path when active |
| 3, 8, 13, 18 (COM1–COM4) |
Analog common outputs | Clamped to V+ or V− during fault; rail-to-rail signal conduction in normal operation |
| 4, 7, 14, 17 (NC1–NC4) |
Fault-protected normally closed analog inputs | Same fault rating as NO pins; complementary path to COM for SPDT function |
| 5 (V−) | Negative analog supply | Bias source for P-channel FETs and fault-sense comparators; sets lower rail limit |
| 6 (GND) | Digital ground reference | Reference for logic inputs and internal level translators; isolated from analog signal paths |
| 15 (N.C.) | No connection | Not internally bonded - must remain unconnected per datasheet |
| 16 (V+) | Positive analog/digital supply | Power source for N-channel FETs, logic, and level translation; defines upper rail |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Enables full dynamic range utilization in ±15V or +12V systems without signal clipping or distortion |
| Output clamping during fault | COM_ terminal actively clamps to V+ or V− rail within 20ns, preventing downstream component damage |
| All switches off with power off | Guarantees high-impedance isolation between NO/NC and COM when supplies are removed |
| Pin compatibility with MAX333/MAX333A | Allows direct PCB-level replacement in existing designs without layout changes or redesign |
| No power-supply sequencing required | Eliminates startup timing constraints - V+ and V− may be applied in any order |
| 1kΩ typical output clamp resistance | Limits fault current to ≤±10mA while maintaining stable rail clamping under load |
Applications
| Test Equipment Signal Routing | Industrial Data-Acquisition Multiplexing |
|---|---|
|
Use Scenario: High-voltage signal switching in automated test equipment where DUTs may generate ±20V transients during connection/disconnection. IC Role / Device Role / Timing Role: Fault-protected SPDT switch routing analog sensor or stimulus signals to measurement front-ends. Use Value: Prevents damage to sensitive ADCs or amplifiers by clamping COM_ to rails during ±25V faults, eliminating need for external TVS or series resistors. |
Use Scenario: Multiplexing multiple 4–20mA current-loop sensors into a shared analog input stage in PLC I/O modules. IC Role / Device Role / Timing Role: Quad SPDT analog switch providing channel selection and fault isolation in harsh industrial environments. Use Value: Maintains signal integrity across 0–10V and ±10V ranges while surviving accidental wiring faults up to ±40V with power off. |
| Redundant Backup Systems | Avionics Signal Conditioning |
|
Use Scenario: Dual-path signal selection in flight-critical avionics where failure of one sensor path must not compromise system integrity. IC Role / Device Role / Timing Role: Fault-isolated analog switch enabling seamless failover between primary and backup sensor inputs. Use Value: Ensures continuity of safe operation by blocking fault propagation between redundant channels via high-impedance isolation during overvoltage events. |
Use Scenario: Signal conditioning in airborne instrumentation where EMI-induced transients and cold-start voltage surges are common. IC Role / Device Role / Timing Role: Rail-to-rail analog switch managing analog inputs from accelerometers, gyros, and pressure transducers. Use Value: Delivers 20ns fault response and guaranteed 0.5nA off-leakage at +85°C, meeting DO-160 Section 22 surge immunity requirements without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | Lower fault rating (±15V power on), higher on-resistance (350Ω), no rail-to-rail support - lacks clamp circuitry | Suitable only for non-fault-critical, low-voltage (<±10V) signal routing | Select only if cost sensitivity outweighs fault protection and performance requirements |
| ADG5412BRUZ | ±40V fault protection (power on/off), 12Ω on-resistance, but requires external charge-pump for rail-to-rail - no integrated clamp | Better for ultra-low RON needs in new designs with space for supporting components | Prefer when lowest possible on-resistance is critical and board area allows auxiliary circuitry |
Compared with MAX333ACPP+, MAX4533CPP+ delivers superior fault resilience and rail-to-rail operation without external components; versus ADG5412BRUZ, it trades lower RON for fully integrated clamping and simpler implementation in space-constrained industrial layouts.
Availability
MAX4533CPP+ is available at Aetrix Electronics and suitable for test equipment, industrial data-acquisition, and avionics signal routing requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
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, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX4533 product line was engineered for ruggedized analog signal switching in mission-critical systems where fault tolerance, rail-to-rail fidelity, and pin compatibility with legacy industry-standard parts are mandatory design requirements.
FAQ
What is the maximum fault voltage the MAX4533CPP+ can withstand with power applied?
The MAX4533CPP+ withstands ±25V faults on NO_ or NC_ terminals when power is applied - specifically, with ±15V supplies, the absolute limit is +25V and -25V relative to ground. Exceeding these values risks permanent damage. This rating is validated per Maxim's Absolute Maximum Ratings table and applies regardless of COM_ loading or signal polarity.
Does the MAX4533CPP+ require external components to achieve rail-to-rail operation?
No, the MAX4533CPP+ achieves true rail-to-rail signal conduction without external components. Its parallel N/P-channel FET architecture and internal level-shifting logic enable full conduction from V− to V+ on all four SPDT channels. This is confirmed in the Typical Operating Characteristics graphs showing RON flatness across the entire supply range.
Is the MAX4533CPP+ pin-compatible with the MAX333A series?
Yes, the MAX4533CPP+ is explicitly pin-compatible with the MAX333 and MAX333A, as stated in the General Description and Pin Configuration sections of the datasheet. All 20 pins map identically in function and physical location, enabling direct replacement in existing PCB layouts without modification.
What is the typical on-resistance matching between channels in the MAX4533CPP+?
The MAX4533CPP+ guarantees ≤10Ω maximum on-resistance mismatch (∆RON) between any two channels under identical conditions (V+ = +15V, V− = −15V, TA = +25°C). This tight matching ensures consistent gain, attenuation, and crosstalk performance across multiplexed signal paths in precision instrumentation.
How does the MAX4533CPP+ behave during power-down?
During power-down, the MAX4533CPP+ automatically places all four SPDT switches in the off state, presenting high-impedance isolation between NO_/NC_ and COM_ terminals. Additionally, NO_ and NC_ pins retain ±40V fault protection even with V+ and V− at 0V - a key safety feature confirmed in the Absolute Maximum Ratings table.
MAX4533CPP+ 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:
- 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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