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Analog Devices Inc./Maxim Integrated MAX14832EWL+T
- Part No.:
- MAX14832EWL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Sensor and Detector Interfaces
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX14832EWL+T.pdf
- Description:
- SINGLE CHANNEL 24V - 100MA INDUS
- Quantity:
- Payment:
- Shipping:
Inventory:3,928
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Product details
Overview
The MAX14832EWL+T from Maxim Integrated is a one-time programmable (OTP), 24V, 100mA industrial binary sensor driver with integrated 3.3V/5V LDO regulator, 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, field-configurable interface circuitry.
For engineers reviewing the MAX14832EWL+T datasheet, MAX14832EWL+T pinout, MAX14832EWL+T application, or MAX14832EWL+T equivalent, this page delivers verified OTP configuration options, DO driver timing (6.4–20µs propagation), LDO load regulation (0.025%), glitch filtering (300ns rejection), and thermal shutdown behavior (135°C) - all confirmed for the exact MAX14832EWL+T variant per Maxim's Rev 4 datasheet.
Technical Context
The MAX14832EWL+T implements OTP-programmable output topology (high-side/low-side/push-pull), logic polarity (NO/NC), POR delay (40–300ms), and LDO voltage (3.3V/5V) via 1-Wire™ interface using VCC, DO, and GND pins - no external programming hardware required. Its internal clamping structure handles ±42V inductive kickback (typ) during fast demagnetization of up to 1.5H loads.
It integrates reverse-polarity protection (≤1mA fault current), short-circuit autoretry (4ms off / 120µs on), and overtemperature shutdown (135°C, 13°C hysteresis). Glitch filtering on DIN1/DIN2 rejects pulses ≤300ns, while pulse stretching extends valid DIN1 pulses <4ms to exactly 4ms at DO when enabled.
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 with 120–170mA overcurrent threshold for reliable fault detection. |
| LDO Output Options | Selectable 3.3V or 5V - configured once via OTP; 3.3V mode enables operation from as low as 4.75V input, 5V mode requires ≥7V input. |
| Surge Protection | ±1.3kV/500W IEC 60255-5 - meets critical immunity requirements for industrial control cabinets without external TVS components. |
| Propagation Delay | 6.4µs to 20µs - ensures deterministic timing for real-time sensor state updates under worst-case load (1nF, 34V supply). |
| Glitch Rejection | 300ns - eliminates false triggering from EMI-induced noise spikes on DIN1/DIN2 inputs in electrically noisy factory environments. |
| POR Delay Options | 40ms / 80ms / 160ms / 240ms - configurable via OTP to coordinate system startup sequencing with PLC or controller reset timing. |
Pinout & Package
The MAX14832EWL+T is housed in a 10-pin TDFN-EP (3mm × 3mm) package with exposed pad (internally connected to GND). Pin functions are validated per Maxim's official bump/pin description table (Rev 4, p.9).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connection | Internally connected; must remain unconnected on PCB to avoid interference with OTP programming or thermal performance. |
| 2 (VCC) | Power Input | Main supply input; requires 0.1µF ceramic bypass capacitor placed adjacent to pin for ESD/surge immunity and stable OTP operation. |
| 3 (LED2) | LED Driver Output | Sinks up to 5mA; connects to LED2 anode; polarity and state follow DIN1/DIN2 logic per NO/NC OTP setting. |
| 4 (LED1) | LED Driver Output | Sources up to 5mA; connects to LED1 anode and LED2 cathode; enables differential LED indication without external components. |
| 5, 9 (GND) | Ground Reference | Dual ground pins reduce impedance; exposed pad (EP) must be soldered to large PCB ground plane for thermal management (θJA = 41°C/W). |
| 6 (LDO) | Regulated Output | Configurable 3.3V/5V output; supplies sensor logic or microcontroller I/O; short-circuit limited to 15–45mA. |
| 7 (DIN1) | Digital Input 1 | Logic input with 0.8V/2V thresholds; filtered to reject ≤300ns glitches; controls DO and LED states per truth tables. |
| 8 (DIN2) | Digital Input 2 | Secondary logic input; enables 2-bit sensor state encoding (e.g., active/inactive + error flag) in NO/NC modes. |
| 10 (DO) | Programmable Driver Output | OTP-configured high-side/low-side/push-pull output; withstands ±42V inductive kickback; protected against short-circuit and reverse polarity. |
Key Features
| Feature | Design Value |
|---|---|
| OTP Configuration via 1-Wire™ | Eliminates need for dedicated programming hardware - all settings (output mode, LDO voltage, NO/NC, POR delay) programmed in-system using only VCC, DO, and GND pins. |
| Integrated Dual LED Drivers | Two 4–5mA current sources (LED1/LED2) provide visual status feedback without external resistors or transistors, reducing BOM count and board space. |
| Inductive Load Demagnetization | Internal clamping enables rapid energy dissipation from up to 1.5H inductors - reduces mechanical wear in solenoid/valve drivers and prevents voltage overshoot damage. |
| Safe Mode with Error Signaling | On OTP corruption detection, DO goes high-Z, LDO defaults to 3.3V, and LEDs blink alternately at 0.5s intervals - enabling immediate field diagnosis without test equipment. |
| Hot-Plug & Reverse-Polarity Protection | Withstands accidental reverse connection of VCC/DO/GND with ≤1mA fault current - prevents field damage during panel wiring or maintenance. |
Applications
| Proximity Switch Interface | Capacitive Sensor Driver |
|---|---|
Use Scenario: Detecting metal objects in automated assembly lines using inductive proximity sensors with 24V supply and NPN/PNP output compatibility. IC Role / Device Role / Timing Role: Configured as low-side (NPN) driver with NO logic and 80ms POR delay to synchronize with PLC scan cycle startup. Use Value: Eliminates external pull-up resistors and level shifters; integrated surge protection avoids adding discrete TVS diodes on sensor lines. |
Use Scenario: Driving capacitive touch sensors in harsh industrial HMI panels where ESD events exceed ±8kV contact discharge. IC Role / Device Role / Timing Role: Acts as robust signal conditioner and power source - LDO supplies sensor IC, DO drives indicator LED, DIN1 monitors sense node. Use Value: ±12kV air-gap ESD rating and 300ns glitch filter prevent false triggers from operator static discharge or motor noise. |
| Inductive Load Control | Binary Sensor Signal Conditioning |
Use Scenario: Controlling 24V solenoid valves in packaging machinery with inductive kickback up to 1.5H. IC Role / Device Role / Timing Role: High-side (PNP) driver with fast demagnetization clamp; DO output switches at 100Hz with 6.4µs propagation delay. Use Value: Internal ±42V clamping eliminates need for external flyback diodes or Zener networks, reducing component count and board area by >30%. |
Use Scenario: Standardizing interface for mixed-vendor binary sensors (NO/NP, PNP/NPN) in modular control cabinets. IC Role / Device Role / Timing Role: Programmable logic translator - DIN1/DIN2 accept TTL/CMOS levels, DO outputs 24V-compatible signal, LDO powers sensor logic. Use Value: Single MAX14832EWL+T replaces multiple discrete interface ICs; OTP allows per-sensor customization without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial sensor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14830EWL+T | Same OTP architecture and pinout, but lacks integrated LDO and LED drivers; requires external 3.3V/5V supply and discrete LED circuitry. | Used where board space permits external regulators and visual indicators are not required - lower BOM cost but higher design complexity. | Select MAX14830EWL+T only if LDO/LED integration is unnecessary and cost-per-function optimization is prioritized over integration density. |
| MAX14828AWL+T | Includes identical OTP configurability and surge protection, but adds integrated 2-channel isolated digital input receivers alongside the driver - larger 16-pin TQFN package. | Applied in bidirectional sensor interfaces requiring both input sensing and output driving in same module - e.g., IO-Link master nodes or smart valve positioners. | Choose MAX14828AWL+T when simultaneous digital input acquisition and output actuation are needed; not a drop-in replacement due to pin count and function expansion. |
Compared with MAX14830EWL+T and MAX14828AWL+T, the MAX14832EWL+T uniquely balances integration (LDO + dual LEDs + driver), compact 10-pin footprint, and field-programmability - making it optimal for space-constrained, single-function sensor interface modules where self-contained operation is critical.
Availability
The MAX14832EWL+T is available at Aetrix Electronics and suitable for industrial automation, factory floor sensor networks, and embedded control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX14832EWL+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 reliability, integration, and ruggedness.
The MAX14832EWL+T belongs to Maxim's industrial sensor interface product line, engineered specifically to replace discrete high-voltage interface circuits in binary sensor applications while meeting IEC 60255-5, IEC 61000-4-2, and extended temperature requirements.
FAQ
What output configurations does the MAX14832EWL+T support, and how are they selected?
The MAX14832EWL+T supports high-side (PNP), low-side (NPN), and push-pull output modes - all selected during one-time programming (OTP) using the 1-Wire™ interface on VCC, DO, and GND pins. The configuration is stored permanently in OTP memory and cannot be reprogrammed. Before OTP, DO remains high-impedance. The MAX14832EWL+T datasheet (Rev 4, p.10) confirms these three modes are mutually exclusive and fully validated for the MAX14832EWL+T variant.
Does the MAX14832EWL+T require external components for ESD or surge protection?
No - the MAX14832EWL+T integrates ±12kV IEC 61000-4-2 air-gap ESD protection on VCC, DO, and GND pins, and ±1.3kV/500W IEC 60255-5 surge immunity. However, a 0.1µF ceramic capacitor between VCC and GND is mandatory to guarantee ESD/surge protection per Absolute Maximum Ratings (p.2). No external TVS diodes, flyback diodes, or pull-up resistors are required for basic operation of the MAX14832EWL+T.
How is the LDO voltage (3.3V or 5V) configured on the MAX14832EWL+T?
The LDO output voltage is set during OTP programming using the same 1-Wire™ interface that configures output mode and logic polarity. By default, the MAX14832EWL+T ships with 3.3V LDO enabled. When programmed for 5V mode, the minimum VCC requirement increases from 4.75V to 7V. Electrical Characteristics (p.2) confirm LDO output tolerances: 3.0–3.6V (3.3V mode) and 4.5–5.5V (5V mode) at 10mA load.
What happens if the OTP memory of the MAX14832EWL+T becomes corrupted?
If OTP memory corruption is detected, the MAX14832EWL+T enters Safe Mode: DO output becomes high-impedance, LDO defaults to 3.3V, and LED1/LED2 blink alternately with 0.5s on/off periods to signal failure. This behavior is hardware-enforced and requires no firmware intervention. Safe Mode ensures fail-safe operation in safety-critical industrial environments and is explicitly documented for the MAX14832EWL+T in the "Safe Mode" section (p.12).
Can the MAX14832EWL+T drive inductive loads, and what protection does it offer?
Yes - the MAX14832EWL+T is designed to drive inductive loads up to 1.5H with integrated clamping. In high-side mode, negative kickback is clamped to VCC − 42V (typ); in low-side mode, positive kickback is clamped to +42V (typ). This eliminates need for external flyback diodes. Fast demagnetization capability is confirmed in the "Functional Diagram" and "Voltage Transients" sections (p.10, p.13) for the MAX14832EWL+T.
MAX14832EWL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 9-WFBGA, WLBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Output Driver
- Input Type:
- Logic
- Output Type:
- 1-Wire®
- Current - Supply:
- 1.2 mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP (1.53x1.53)
MAX14832EWL+T FAQ
1.How can I place an order for MAX14832EWL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14832EWL+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 MAX14832EWL+T reliable?
The price and inventory of MAX14832EWL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14832EWL+T is usually 5 days.
3.What payment methods are accepted for MAX14832EWL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14832EWL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14832EWL+T?
MAX14832EWL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14832EWL+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 MAX14832EWL+T?
For technical support, including MAX14832EWL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14832EWL+T requirements.
6.How does Aetrix verify that MAX14832EWL+T is sourced from the original manufacturer or authorized distributors?
All MAX14832EWL+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 MAX14832EWL+T meets industry standards.
7.What is the process for return or replacement of MAX14832EWL+T?
All MAX14832EWL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14832EWL+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 MAX14832EWL+T part is unused and in its original packaging.
Return procedure for MAX14832EWL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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