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Analog Devices Inc./Maxim Integrated MAX4533EAP+T
- Part No.:
- MAX4533EAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX4533EAP+T.pdf
- Description:
- IC SWITCH SPDT X 4 175OHM 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,081
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Product details
Overview
MAX4533EAP+T 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. It serves as a fault-protected signal routing device in industrial data-acquisition front-ends where overvoltage transients threaten downstream ADCs or multiplexers.
For engineers reviewing the MAX4533EAP+T datasheet, MAX4533EAP+T pinout, MAX4533EAP+T application, or MAX4533EAP+T equivalent, this page delivers verified specifications, package mapping, fault-response timing, leakage behavior across temperature, and real-world alternative selection guidance for high-reliability analog switching designs.
Technical Context
The MAX4533EAP+T implements a parallel N-channel/P-channel MOSFET architecture per channel, enabling true rail-to-rail conduction while maintaining low on-resistance (125Ω typ). Its internal voltage-sensing comparators monitor NO_/NC_ terminals continuously against V+ and V− rails to trigger fault isolation within 20ns (typ).
During overvoltage events, the switch disconnects the COM_ terminal from the faulty NO_/NC_ path and clamps COM_ to the appropriate supply rail via dedicated clamp FETs (N2/P2), delivering up to ±10mA load current without transition glitches-ensuring deterministic output behavior under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (max) | 175Ω at ±15V supplies - ensures minimal signal attenuation and gain error in precision sensor interfaces |
| Fault protection (power on) | ±25V on NO_/NC_ - protects connected circuitry from transient overvoltages during active operation |
| Fault protection (power off) | ±40V on NO_/NC_ - maintains robustness during system power-down or brownout states |
| Fault response time (typ) | 20ns - enables fast isolation before damaging energy transfers to sensitive downstream components |
| Off-leakage current (max) | 10nA at +85°C - preserves signal integrity in high-impedance measurement paths such as thermocouple or pH sensor inputs |
| Supply range | ±4.5V to ±18V dual or +9V to +36V single - supports wide industrial supply architectures including ±15V legacy systems and +24V PLC rails |
| Logic compatibility | +0.8V/+2.4V thresholds - guarantees reliable switching with both TTL and CMOS drivers across full supply range |
Pinout & Package
MAX4533EAP+T is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, rated for -40°C to +85°C operation. The package provides compact footprint and thermal performance suitable for space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1,10,11,20) | Digital control inputs | Accept TTL/CMOS logic to select NO_ or NC_ path per channel; no power sequencing required |
| NO1–NO4 (Pins 2,9,12,19) | Normally open analog inputs | Fault-protected terminals; conduct to COM_ when corresponding IN_ = logic high |
| COM1–COM4 (Pins 3,8,13,18) | Analog common outputs | Bidirectional signal path; clamped to V+ or V− during fault; not fault-protected |
| NC1–NC4 (Pins 4,7,14,17) | Normally closed analog inputs | Fault-protected terminals; conduct to COM_ when corresponding IN_ = logic low |
| V+ (Pin 16) | Positive supply input | Powers analog switches and logic translators; sets logic thresholds; supports up to +36V in single-supply mode |
| V− (Pin 5) | Negative supply input | Powers analog switches; enables bipolar signal handling; supports down to -18V |
| GND (Pin 6) | Digital ground reference | Reference for logic inputs only; isolated from analog signal paths to prevent noise coupling |
| N.C. (Pin 15) | No connection | Not internally bonded; must be left floating or tied to GND per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping-enables full dynamic range utilization in ±15V instrumentation amplifiers |
| Output clamping during fault | COM_ actively clamped to V+ or V− with ≤20ns delay and ±10mA drive-eliminates undefined output states that could latch or damage downstream logic |
| No power-supply sequencing required | Operates safely regardless of V+/V− ramp order-simplifies power-up sequencing in multi-rail industrial controllers |
| Break-before-make timing | Typical 5ns delay prevents momentary shorting between NO_ and NC_ paths-critical for avoiding signal corruption in multiplexed sensor arrays |
| Matched on-resistance | ≤10Ω max mismatch between channels-ensures consistent gain and offset across all four SPDT paths in differential or ratiometric measurements |
Applications
| Redundant Data-Acquisition Systems | Portable Test & Measurement Equipment |
|---|---|
|
Use Scenario: Dual-path analog input selection with automatic failover upon sensor or cable fault detection. IC Role / Device Role / Timing Role: Fault-protected SPDT switch routing primary and backup sensor signals to shared ADC, with instantaneous COM_ clamping during overvoltage events. Use Value: Prevents ADC saturation or latch-up during field-induced transients, enabling continuous valid readings without system reset. |
Use Scenario: Battery-powered handheld multimeter with auto-ranging analog front-end requiring high-voltage tolerance and low leakage. IC Role / Device Role / Timing Role: Quad SPDT switch selecting between voltage, current, and resistance measurement paths while surviving accidental 1000V probe misconnections. Use Value: ±40V power-off fault rating allows safe hot-plug of test leads; 0.5nA max off-leakage at 25°C preserves battery life and measurement accuracy. |
| Industrial Process Control I/O Modules | Avionics Signal Conditioning Units |
|
Use Scenario: 4–20mA loop-powered transmitter interfacing multiple field sensors with ESD and surge exposure. IC Role / Device Role / Timing Role: Fault-isolating analog switch routing sensor outputs to isolated signal conditioners, with rail-clamped COM_ preventing backfeed into loop power supplies. Use Value: 175Ω max RON minimizes loop burden; ±25V fault protection sustains operation during lightning-induced surges on long cable runs. |
Use Scenario: Flight-critical sensor interface board requiring DO-160 compliance for induced transient immunity. IC Role / Device Role / Timing Role: Quad SPDT switch selecting between primary and redundant air data sensors, with sub-20ns fault response meeting avionics transient suppression requirements. Use Value: Guaranteed -40°C to +85°C operation and 20-pin SSOP packaging meet size, weight, and environmental constraints of airborne electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4532EAP+T | Triple SPDT configuration (3 channels), identical fault protection and RON, same SSOP-20 package | Suitable for designs requiring three independent fault-protected paths instead of four | Select when channel count reduction simplifies BOM or PCB layout without sacrificing fault resilience |
| ADG5412BRUZ | Quad SPDT with ±40V fault protection (power on/off), 180Ω max RON, TSSOP-16 package, higher 125°C operating range | Preferred for extended-temperature environments or space-constrained layouts needing smaller footprint | Choose when operating beyond +85°C is required or when TSSOP-16 fits tighter board area constraints |
Compared with MAX4533EAP+T, MAX4532EAP+T reduces channel count but retains identical fault behavior and electrical specs, while ADG5412BRUZ offers wider temperature range and smaller package at marginally higher on-resistance-making each viable for distinct mechanical, thermal, or functional trade-offs.
Availability
MAX4533EAP+T is available at Aetrix Electronics and suitable for industrial process control, portable test equipment, and avionics signal conditioning requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +85°C performance.
Supply support for MAX4533EAP+T 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 applications-with emphasis on reliability, integration, and ruggedized performance.
The MAX4533EAP+T belongs to Maxim's fault-protected analog switch family, engineered specifically for high-integrity signal routing in harsh environments where overvoltage transients, ESD, and power sequencing unpredictability demand hardware-level protection-not just software-based fault mitigation.
FAQ
What is the maximum allowable overvoltage on NO_/NC_ pins of the MAX4533EAP+T when powered off?
The MAX4533EAP+T guarantees ±40V fault protection 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 regardless of GND reference point, making MAX4533EAP+T suitable for hot-swap or maintenance scenarios where inputs may be energized before system power is applied.
Does the MAX4533EAP+T require external pull-up or pull-down resistors on its IN_ inputs?
No, the MAX4533EAP+T does not require external biasing on IN1–IN4. Its logic inputs have defined TTL/CMOS-compatible thresholds (+0.8V low, +2.4V high) and draw only ±5µA max input current across temperature. Driving directly from microcontroller GPIOs, FPGA outputs, or discrete logic gates is fully supported-eliminating BOM cost and board space for passive components while ensuring noise-immune switching.
How does the MAX4533EAP+T behave during a negative fault event-e.g., NO_ pulled to -30V while V+ = +15V and V− = -15V?
When NO_ is driven to -30V (exceeding V− = -15V by >150mV), the MAX4533EAP+T immediately forces the associated switch open and clamps COM_ to V− (-15V) via its internal P2 clamp FET. Output recovery occurs in ~1.3µs once NO_ returns within rails. This behavior is confirmed in the Typical Operating Characteristics (Figure MAX4533 toc13) and Table 1 of the datasheet-ensuring predictable, rail-limited output under asymmetric fault stress.
Can the MAX4533EAP+T operate with asymmetrical dual supplies, such as V+ = +12V and V− = -5V?
Yes, the MAX4533EAP+T supports asymmetrical dual supplies as long as |V+ − V−| ≤ +44V and each supply remains within its Absolute Maximum Rating (V+ ≥ -0.3V, V− ≤ +0.3V). With V+ = +12V and V− = -5V, the device delivers rail-to-rail switching from -5V to +12V and maintains ±25V fault protection on NO_/NC_. On-resistance increases slightly versus symmetrical ±15V, but remains within 175Ω max per Electrical Characteristics tables.
Is the MAX4533EAP+T pin-compatible with the MAX333A, and what design considerations follow from that compatibility?
Yes, the MAX4533EAP+T is explicitly pin-compatible with the industry-standard MAX333 and MAX333A, sharing identical 20-pin SSOP pinout and logic-level mapping. However, unlike the MAX333A, the MAX4533EAP+T adds fault protection, rail-to-rail operation, and lower on-resistance-so direct replacement requires verifying that downstream circuitry can tolerate the enhanced clamping action and updated leakage specs, especially in high-impedance nodes.
MAX4533EAP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
MAX4533EAP+T FAQ
1.How can I place an order for MAX4533EAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4533EAP+T 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 MAX4533EAP+T reliable?
The price and inventory of MAX4533EAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4533EAP+T is usually 5 days.
3.What payment methods are accepted for MAX4533EAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4533EAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4533EAP+T?
MAX4533EAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4533EAP+T 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 MAX4533EAP+T?
For technical support, including MAX4533EAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4533EAP+T requirements.
6.How does Aetrix verify that MAX4533EAP+T is sourced from the original manufacturer or authorized distributors?
All MAX4533EAP+T 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 MAX4533EAP+T meets industry standards.
7.What is the process for return or replacement of MAX4533EAP+T?
All MAX4533EAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4533EAP+T, 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 MAX4533EAP+T part is unused and in its original packaging.
Return procedure for MAX4533EAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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