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Analog Devices Inc./Maxim Integrated MAX14832ETB+T
- Part No.:
- MAX14832ETB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Sensor and Detector Interfaces
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX14832ETB+T.pdf
- Description:
- IC SENSOR OUTPUT DRIVER 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
The MAX14832ETB+T from Maxim Integrated is a one-time programmable (OTP), 24V, 100mA industrial binary sensor driver with integrated LDO regulator (configurable for 3.3V or 5V), dual LED drivers, and ±1.3kV IEC 60255-5 surge protection. It supports high-side (PNP), low-side (NPN), or push-pull output configurations and operates across –40°C to +85°C in a 10-pin TDFN-EP (3mm × 3mm) package. It is used in proximity switches and inductive/capacitive sensors requiring robust transient immunity and field-configurable logic.
For engineers reviewing the MAX14832ETB+T datasheet, MAX14832ETB+T pinout, MAX14832ETB+T application, or MAX14832ETB+T equivalent, this page delivers verified OTP configuration options, DO driver timing (6.4–20µs propagation delay), LDO load regulation (0.025%), thermal shutdown threshold (+135°C), and real-world ESD resilience (±12kV air-gap).
Technical Context
The MAX14832ETB+T implements OTP-programmable driver topology (high-side/low-side/push-pull), LDO voltage selection (3.3V/5V), NO/NC logic mode, POR delay (40–300ms), and pulse stretching (4ms fixed). Its 1-Wire® programming interface uses only VCC, DO, and GND pins-no dedicated programming port required.
It integrates reverse-polarity protection (≤1mA fault current), short-circuit autoretry (4ms off / 120µs on), fast inductive demagnetization (±42V clamping), and glitch filtering (300ns rejection). The DO output features ±1.3kV/500W IEC 60255-5 surge immunity when paired with a 0.1µF VCC bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 4.75V to 34V - supports wide industrial rail voltages including 24V nominal systems with brownout tolerance down to 4.75V (3.3V LDO mode) or 7V (5V LDO mode) |
| Driver Output Current | 100mA continuous - sufficient for driving standard industrial binary sensor loads without external buffering |
| LDO Output Options | 3.3V or 5V (OTP-selectable) - powers downstream logic or sensors; 15mA short-circuit current limit ensures safe fault handling |
| Surge Protection | ±1.3kV/500W per IEC 60255-5 - validated with external 0.1µF VCC–GND capacitor; eliminates need for discrete TVS at VCC/DO |
| ESD Immunity | ±12kV air-gap, ±8kV contact (IEC 61000-4-2) - protects against field-level electrostatic events without latch-up or functional disruption |
| POR Delay Options | 40ms / 80ms / 160ms / 240ms (OTP-selectable) - prevents false triggering during power ramp-up in noisy industrial environments |
| Propagation Delay | 6.4µs to 20µs (tPLH/tPHL) - enables reliable operation up to ~4kHz switching in non-fault conditions |
Pinout & Package
MAX14832ETB+T is housed in a 10-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) with exposed thermal pad internally connected to GND. The package supports high-power dissipation (1951.2mW at TA = +70°C) and requires PCB thermal relief via large copper pour under the EP.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connection | Internally tied off; must remain unconnected on PCB to avoid unintended coupling or leakage paths |
| 2 (VCC) | Main Power Input | Accepts 4.75V–34V supply; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for surge/ESD compliance |
| 3 (LED2) | LED2 Anode Driver | Constant-current source (4–5mA); connects to LED2 anode; cathode tied to LED1 anode per typical circuit |
| 4 (LED1) | LED1 Anode Driver | Constant-current source (4–5mA); connects to LED1 anode; cathode tied to LED2 anode - enables dual-LED status indication |
| 5 & 9 (GND) | Ground Reference | Dual ground pins reduce impedance; both must be connected to low-impedance system ground plane |
| 6 (LDO) | Configurable Regulator Output | OTP-set to 3.3V or 5V; supplies sensor logic or microcontroller I/O; includes 0.1µF local decoupling requirement |
| 7 (DIN1) | Digital Input 1 | Logic input with 0.8V/2.0V thresholds; includes 300ns glitch filter; controls DO/LED state per NO/NC truth tables |
| 8 (DIN2) | Digital Input 2 | Secondary logic input with identical thresholds and filtering; enables 2-bit sensor state encoding (e.g., active/inactive + error) |
| 10 (DO) | Programmable Driver Output | OTP-configured as PNP, NPN, or push-pull; handles 100mA load; provides ±42V inductive clamping and short-circuit autoretry |
Key Features
| Feature | Design Value |
|---|---|
| OTP Configuration via 1-Wire® | Eliminates need for external programmers - all settings (driver mode, LDO voltage, NO/NC, POR delay, pulse stretch) programmed using only VCC, DO, and GND pins |
| Integrated Dual LED Drivers | Two 4–5mA constant-current sources enable visual status feedback without external transistors or resistors - reduces BOM count and board space |
| Inductive Load Demagnetization | Internal ±42V clamping enables rapid energy dissipation from up to 1.5H inductors - prevents voltage overshoot damage during switching transitions |
| Safe Mode with Error Signaling | Automatic entry into high-Z DO, 3.3V LDO, and alternating 0.5s LED blink upon OTP bit corruption - provides field-diagnosable failure indication |
| Hot-Plug & Reverse-Polarity Protection | Withstands accidental reverse connection of VCC/DO/GND with ≤1mA fault current - prevents damage during panel wiring or maintenance |
Applications
| Proximity Switches | Capacitive Sensors |
|---|---|
Use Scenario: Detecting metal objects in automated assembly lines with 24V DC supply and ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Configured as high-side (PNP) driver with NO logic to sink load current when target is present; LDO powers internal sensor signal conditioning. Use Value: Eliminates external PNP transistor, LDO, and surge protection components - reduces footprint by >40% vs. discrete solution while meeting IEC 60255-5. |
Use Scenario: Liquid level detection in chemical tanks using capacitive sensing electrodes exposed to harsh industrial environments. IC Role / Device Role / Timing Role: Acts as low-side (NPN) driver with NC logic to assert output when capacitance exceeds threshold; pulse stretching extends short detection pulses for reliable PLC capture. Use Value: Glitch filtering rejects EMI-induced noise on DIN lines; ±12kV ESD immunity prevents false triggers during tank cleaning or grounding events. |
| Inductive Sensors | Industrial Binary Sensor Modules |
Use Scenario: Monitoring gear tooth presence in motor-driven conveyors with inductive coils generating 1.2H back-EMF during switching. IC Role / Device Role / Timing Role: Push-pull driver configured with fast demagnetization to clamp ±42V kickback; POR delay set to 200ms to prevent startup chatter. Use Value: Internal clamping avoids need for external Zener diodes or snubbers - improves reliability and eliminates tuning during coil replacement. |
Use Scenario: OEM production of standardized M12 connectorized binary sensors for factory automation with field-reprogrammable behavior. IC Role / Device Role / Timing Role: Serves as core configurable driver IC; OTP allows same PCB to support multiple sensor variants (NO/NC, 3.3V/5V logic, different POR delays) via software-defined programming. Use Value: Reduces SKU count by 75% - single hardware design supports 4 distinct sensor models through post-manufacture OTP configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial sensor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14830ETB+T | Same OTP architecture but lacks integrated LDO and LED drivers; requires external 3.3V/5V supply and discrete LEDs | Suitable only where external regulation and status indication are already provided; no board-space savings | Select when cost sensitivity outweighs integration benefits and existing design has spare LDO/LED resources |
| TI ISO1211DR | Galvanically isolated 24V digital input receiver (not driver); no OTP, no LDO, no LED drivers; 2.5kVRMS isolation rating | Used on controller side to receive sensor signals - not a drop-in replacement for sensor-side output driving | Choose only for isolated input stage design; cannot replace MAX14832ETB+T in sensor output role |
Compared with MAX14830ETB+T, the MAX14832ETB+T adds integrated power and visual feedback at minimal cost premium; versus ISO1211DR, it serves a fundamentally different system position (output driver vs. isolated input receiver), making direct substitution invalid without architectural redesign.
Availability
MAX14832ETB+T is available at Aetrix Electronics and suitable for industrial binary sensors, proximity switches, and capacitive/inductive sensor modules requiring stable component supply, long-term lifecycle assurance, and guaranteed OTP programming support.
Supply support for MAX14832ETB+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 - emphasizing ruggedness, configurability, and system-level integration.
The MAX14832ETB+T belongs to Maxim's industrial sensor interface product line, engineered specifically to consolidate high-voltage driver, regulation, protection, and diagnostics functions into a single programmable device for factory automation and process control systems.
FAQ
What is the maximum inductive load the MAX14832ETB+T can safely drive?
The MAX14832ETB+T supports inductive loads up to 1.5H with fast demagnetization circuitry that clamps positive kickback to +42V (typ) and negative kickback to VCC – 42V (typ). This capability is validated for loads switching at ≤100mA and ensures reliable operation without external snubbers or clamps in standard industrial sensor applications.
Can the MAX14832ETB+T be reprogrammed after initial OTP configuration?
No - the MAX14832ETB+T uses one-time programmable (OTP) memory. Once configured (e.g., driver mode, LDO voltage, NO/NC logic), settings are permanent and nonvolatile. There is no mechanism for erasure or reprogramming; configuration must be verified before final OTP write.
Does the MAX14832ETB+T require external components to meet IEC 60255-5 surge immunity?
Yes - the ±1.3kV/500W IEC 60255-5 surge rating for VCC and DO is contingent on placing a 0.1µF ceramic capacitor between VCC and GND, as specified in the Absolute Maximum Ratings note. Omitting this capacitor voids the surge specification and risks permanent damage during transient events.
How does the MAX14832ETB+T handle short-circuit faults on the DO output?
Upon detecting a short circuit for ≥120µs (typ), the MAX14832ETB+T disables the DO driver and enters autoretry mode: 4ms OFF followed by 120µs ON. This cycle repeats until the fault clears, limiting average power dissipation and preventing thermal runaway while maintaining visibility of fault condition via LED signaling.
What is the purpose of the two LED driver outputs (LED1 and LED2) on the MAX14832ETB+T?
The LED1 and LED2 outputs provide user-configurable visual status indication synchronized with DIN1/DIN2 inputs and DO state. They operate as constant-current sources (4–5mA) and follow truth tables defined by OTP-selected NO/NC logic - enabling intuitive operator feedback (e.g., green/red status, fault blinking) without external driver circuitry.
MAX14832ETB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 10-WFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Output Driver
- Input Type:
- Logic
- Output Type:
- Logic
- Current - Supply:
- 1.2 mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX14832ETB+T FAQ
1.How can I place an order for MAX14832ETB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14832ETB+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 MAX14832ETB+T reliable?
The price and inventory of MAX14832ETB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14832ETB+T is usually 5 days.
3.What payment methods are accepted for MAX14832ETB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14832ETB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14832ETB+T?
MAX14832ETB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14832ETB+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 MAX14832ETB+T?
For technical support, including MAX14832ETB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14832ETB+T requirements.
6.How does Aetrix verify that MAX14832ETB+T is sourced from the original manufacturer or authorized distributors?
All MAX14832ETB+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 MAX14832ETB+T meets industry standards.
7.What is the process for return or replacement of MAX14832ETB+T?
All MAX14832ETB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14832ETB+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 MAX14832ETB+T part is unused and in its original packaging.
Return procedure for MAX14832ETB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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