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Analog Devices Inc./Maxim Integrated MAX4533EAP
- Part No.:
- MAX4533EAP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX4533EAP.pdf
- Description:
- IC SWITCH SPDT X 4 175OHM 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,362
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Product details
Overview
MAX4533EAP from Maxim Integrated is a quad, single-pole/double-throw (SPDT), fault-protected analog switch with rail-to-rail signal handling, ±25V fault protection with power on, and 175Ω max on-resistance at ±15V supplies. It operates from dual ±4.5V to ±18V or single +9V to +36V supplies and features TTL/CMOS-compatible logic inputs. Used in test equipment and industrial control systems where overvoltage transients threaten downstream circuitry.
For engineers reviewing the MAX4533EAP datasheet, MAX4533EAP pinout, MAX4533EAP application, or MAX4533EAP equivalent, key selection criteria include fault-protection voltage limits (±25V with power on, ±40V with power off), rail-to-rail analog signal range, break-before-make timing (20ns typ), and compatibility with legacy MAX333/MAX333A layouts.
Technical Context
The MAX4533EAP implements parallel N-channel and P-channel MOSFET switch elements per channel, enabling low on-resistance and true rail-to-rail conduction. Its internal voltage-sensing comparators monitor NO_/NC_ terminals continuously against V+ and V− rails to detect overvoltage faults.
During fault conditions, the switch disconnects NO_/NC_ from COM_, clamps COM_ to the appropriate supply rail via dedicated clamp FETs (N2/P2), and limits output current to ±10mA. Fault response time is 20ns typical; recovery time is 2.5µs (positive fault) or 1.3µs (negative fault).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (max) | 175Ω at ±15V supplies - ensures minimal signal attenuation and thermal rise in precision analog paths |
| Fault protection (power on) | ±25V on NO_/NC_ - protects connected ADCs, amplifiers, or sensors during live-system overvoltage events |
| Fault protection (power off) | ±40V on NO_/NC_ - enables safe hot-swap or maintenance without supply bias |
| Off-leakage current (25°C) | 0.5nA - preserves high-impedance node integrity in data-acquisition front-ends |
| Logic thresholds | +0.8V low / +2.4V high - guarantees interoperability with both TTL and CMOS drivers across ±15V or +12V supply configurations |
| Supply range | Dual: ±4.5V to ±18V; Single: +9V to +36V - supports wide industrial and avionics power architectures |
| Turn-on time (typ) | 20ns at ±15V - meets timing requirements for high-speed multiplexing in automated test equipment |
Pinout & Package
MAX4533EAP 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 portable and 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 SPDT channel; no power-supply 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 | Non-fault-protected bidirectional signal path; clamped to V+ or V− during overvoltage faults |
| 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 | Powers analog switches and digital logic; sets input threshold high level |
| V− (Pin 5) | Negative supply | Completes dual-supply operation; sets input threshold low level and reduces RON when lowered |
| GND (Pin 6) | Digital ground | Reference for logic inputs and internal translators; isolated from analog signal paths |
| N.C. (Pin 15) | No connection | Not internally bonded - must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without distortion or clipping, enabling full dynamic range utilization in ±15V systems |
| Output clamping during fault | COM_ terminal actively clamped to V+ or V− rail with ≤1kΩ resistance - prevents latch-up or damage to downstream ICs |
| All switches off with power off | Guarantees high-impedance isolation between NO_/NC_ and COM_ when supplies are removed - critical for system safety during maintenance |
| Pin-compatible with MAX333/MAX333A | Direct drop-in replacement for legacy designs - eliminates PCB redesign and qualification effort |
| 20ns typical fault response | Fast detection and isolation of overvoltage transients - preserves signal integrity in high-speed data acquisition |
Applications
| Redundant/Backup Systems | Test Equipment |
|---|---|
Use Scenario: Signal routing between primary and backup sensor channels in flight control units or power grid monitoring systems. IC Role / Device Role / Timing Role: Quad SPDT switch selects active channel while isolating failed path; fault protection prevents fault propagation across redundancy boundaries. Use Value: Enables automatic failover without manual intervention or system shutdown; ±40V power-off protection allows safe field replacement. | Use Scenario: Multiplexing multiple DUT (device-under-test) signals into shared measurement instrumentation in ATE platforms. IC Role / Device Role / Timing Role: Analog switch matrix routes calibrated reference voltages or sensor outputs to digitizers; 20ns fault response prevents transient-induced measurement corruption. Use Value: Maintains measurement accuracy under ESD or probe misconnection events; rail-to-rail support accommodates full-scale instrument ranges. |
| Industrial Process Control | Avionics Systems |
Use Scenario: Isolating 4–20mA loop transmitters and PLC analog I/O modules from field wiring faults in factory automation. IC Role / Device Role / Timing Role: Fault-protected interface between field-side analog inputs and controller-side signal conditioning; clamps COM_ to rails during surge events. Use Value: Prevents controller damage from induced lightning surges or ground potential differences; −40°C to +85°C rating suits harsh plant environments. | Use Scenario: Routing navigation sensor signals (e.g., gyros, accelerometers) in inertial measurement units exposed to aircraft electrical noise and transients. IC Role / Device Role / Timing Role: High-reliability analog switch providing signal path selection and fault containment in safety-critical subsystems. Use Value: Meets DO-160 Section 22 lightning-induced transient requirements; pin compatibility simplifies upgrade from MAX333-based legacy avionics. |
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 |
|---|---|---|---|
| MAX333AEPP | Lower fault protection (±15V with power on); 350Ω max RON; −40°C to +85°C grade | Targeted at cost-sensitive industrial applications with lower transient severity | Select when ±15V fault margin suffices and board space permits wider SOIC package |
| ADG5412BRUZ | Higher fault protection (±40V with power on); 12Ω max RON; SPI-controlled quad SPST (not SPDT) | Requires digital configuration; suited for programmable I/O modules needing tighter on-resistance | Choose when precise channel control via serial interface is required and SPDT topology is not mandatory |
Compared with MAX333AEPP and ADG5412BRUZ, the MAX4533EAP uniquely delivers SPDT topology with ±25V/±40V fault protection and pin compatibility to legacy MAX333 designs-making it optimal for reliability-critical upgrades without layout changes.
Availability
MAX4533EAP is available at Aetrix Electronics and suitable for industrial process control, avionics systems, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4533EAP 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 MAX4533EAP belongs to Maxim's fault-protected analog switch product line, engineered for robust signal routing in environments subject to electrical overstress, such as test instrumentation and aerospace systems.
FAQ
What is the operating temperature range of the MAX4533EAP?
The MAX4533EAP is specified for operation from −40°C to +85°C. This extended industrial temperature range ensures reliable performance in demanding environments such as factory automation, outdoor test gear, and avionics subsystems. The device maintains its 175Ω max on-resistance and sub-nanoampere leakage across this full range, as verified by production testing per the datasheet's C/E-grade specifications.
Does the MAX4533EAP require power-supply sequencing during startup or shutdown?
No, the MAX4533EAP does not require power-supply sequencing. Its architecture ensures safe operation regardless of the order in which V+ and V− are applied or removed. During power-up, all switches remain off until valid logic levels are present on IN pins. During power-down, the device automatically transitions to a high-impedance state with all switches off - a key safety feature confirmed in the datasheet's "No Power-Supply Sequencing Required" feature list.
How does fault protection work on the MAX4533EAP when power is off?
When power is off (V+ = V− = 0), the MAX4533EAP provides ±40V fault protection on NO_ and NC_ terminals relative to GND. Internal protection structures isolate the COM_ node, limiting leakage to nanoamperes and preventing damage from static discharge or accidental connection to live circuits. This capability is explicitly tested and guaranteed - unlike many analog switches that lose protection entirely without bias.
Is the MAX4533EAP pin-compatible with the MAX333A?
Yes, the MAX4533EAP is fully pin-compatible with the industry-standard MAX333 and MAX333A. Pin assignments, footprint, and logic behavior match exactly - enabling direct replacement in existing designs. This compatibility is stated in the datasheet's General Description and validated across all 20 pins, including identical IN/NO/COM/NC mapping and shared V+/V−/GND/N.C. locations.
What is the maximum continuous current the MAX4533EAP can handle at the COM_ terminal during a fault?
During an overvoltage fault, the MAX4533EAP clamps the COM_ terminal to the appropriate supply rail (V+ or V−) and can safely sink or source up to ±10mA of load current. This value is specified in the Electrical Characteristics table under "COM_ On-Clamp Output Current, Supplies On" and is guaranteed across the full −40°C to +85°C operating range for the MAX4533EAP grade.
MAX4533EAP 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
MAX4533EAP FAQ
1.How can I place an order for MAX4533EAP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4533EAP 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 reliable?
The price and inventory of MAX4533EAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4533EAP is usually 5 days.
3.What payment methods are accepted for MAX4533EAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4533EAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4533EAP?
MAX4533EAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4533EAP 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?
For technical support, including MAX4533EAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4533EAP requirements.
6.How does Aetrix verify that MAX4533EAP is sourced from the original manufacturer or authorized distributors?
All MAX4533EAP 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 meets industry standards.
7.What is the process for return or replacement of MAX4533EAP?
All MAX4533EAP units undergo pre-shipment inspection (PSI). If there is an issue with MAX4533EAP, 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 part is unused and in its original packaging.
Return procedure for MAX4533EAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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