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Analog Devices Inc./Maxim Integrated MAX22193ATP+T
- Part No.:
- MAX22193ATP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX22193ATP+T.pdf
- Description:
- 4 CHANNEL HIGH SPEED OCTAL INDUS
- Quantity:
- Payment:
- Shipping:
Inventory:3,061
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Product details
Overview
MAX22193ATP+T from Analog Devices is a high-speed, quad-channel industrial digital input IC that translates 24V field-side signals into parallel CMOS-compatible logic outputs (OP1–OP4). It delivers ≤300ns propagation delay, ≤40ns channel-to-channel skew, and supports IEC 61131-2 Type 1/2/3 inputs via configurable current-limiting (1.18–7.01mA) using external REFDI and series resistors. Used in PLC I/O modules for real-time sensor monitoring with integrated diagnostics.
For engineers reviewing the MAX22193ATP+T datasheet, MAX22193ATP+T pinout, MAX22193ATP+T application, or MAX22193ATP+T equivalent, this page provides verified technical context on field-side supply operation (7–65V), 3.3V LDO output capability, READY fault signaling, energyless LED drivers, and surge/ESD robustness per IEC 61000-4-2/4-5.
Technical Context
The MAX22193ATP+T integrates four independent current-limited input channels with precision voltage thresholds (e.g., VTHP+ = 5.6V typ, hysteresis = 0.9V), each feeding a dedicated CMOS output stage. Its internal 3.3V LDO regulator accepts 7–65V field supply (VDD24) and delivers up to 25mA, enabling direct powering of isolators or other field-side circuitry.
It implements fault detection via integrated monitors: VDD24 supply status (14.6V nominal READY threshold), REFDI short detection (>550μA), overtemperature shutdown (165°C), and EXTVM-configurable voltage monitoring. The open-drain READY signal asserts only when all five conditions-including RDYEN high, valid VDD3 UVLO, and non-shorted REFDI-are met.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | ≤300ns max (IN→OP); enables sub-microsecond response for high-speed motion control loops. |
| Channel-to-Channel Skew | ≤40ns max; ensures deterministic timing across all four inputs for synchronized state capture. |
| Input Voltage Range | −40V to +40V on IN pins; withstands reverse polarity and transient overvoltage in industrial wiring. |
| Field Supply Range | 7V to 65V on VDD24; powers device directly from unregulated 24V DC rails without external regulators. |
| Logic Compatibility | 3.3V or 5V CMOS outputs (OP1–OP4); interfaces directly with microcontrollers, FPGAs, or digital isolators. |
| IEC 61131-2 Compliance | Configurable Type 1/2/3 via RREFDI (6–36kΩ) and external series resistor; meets standard trip points and current limits. |
| Surge Immunity | ±2kV line-to-line per IEC 61000-4-5 (with ≥470Ω series resistor); eliminates need for discrete TVS on every channel. |
| ESD Robustness | ±8kV contact / ±15kV air-gap per IEC 61000-4-2 (with ≥470Ω series resistor); reduces board-level ESD protection complexity. |
Pinout & Package
MAX22193ATP+T is housed in a 4mm × 4mm, 20-pin TQFN package (exposed pad) with wettable flanks, optimized for automated optical inspection and thermal performance in high-density industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD24 (Pin 20) | 24V Field Supply Input | Accepts 7–65V unregulated industrial supply; powers internal LDO and input channels; bypass with 0.1µF + 1µF to GND. |
| VDD3 (Pin 2) | 3.3V Regulated Output / External Supply Input | Provides 3.3V @ up to 25mA when powered from VDD24; or accepts 3.0–5.5V external supply if VDD24 is unused. |
| GND (Pins 1, 15) | Ground Reference | Common return for all analog/digital signals and power supplies; connect exposed pad (EP) directly to ground plane. |
| IN1–IN4 (Pins 3,5,12,14) | Field Input Terminals | Current-sinking inputs compatible with 24V sensors; require external series resistor (470Ω for Type 2, 1.5kΩ for Type 1/3). |
| LED1–LED4 (Pins 4,6,11,13) | Energyless LED Driver Outputs | Sink current when corresponding IN_ is active; drives indicator LEDs with zero additional power dissipation. |
| OP1–OP4 (Pins 7,8,9,10) | Parallel CMOS Logic Outputs | Active-high outputs reflecting IN1–IN4 states; high-impedance during thermal shutdown or READY deassertion. |
| REFDI (Pin 16) | Current-Limit Reference Input | Connects to GND via resistor (6kΩ for Type 2, 18kΩ for Type 1/3) to set precise input current limit and trip thresholds. |
| RDYEN (Pin 18) | Ready Enable Input | Weak internal pulldown; assert high to enable READY output; supports daisy-chaining multiple devices' READY signals. |
| READY (Pin 19) | Fault-Indicating Open-Drain Output | Asserts high only when VDD3 UVLO passed, VDD24 valid (if used), no REFDI short, no overtemperature, and RDYEN high. |
| EXTVM (Pin 17) | External VDD24 Monitor Control | Connect to GND for internal 14V threshold; to VDD3 to disable VDD24 monitoring; or to resistive divider for custom threshold. |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Parallel Interface | Four simultaneous CMOS outputs eliminate serialization latency and reduce host MCU interrupt overhead in real-time I/O systems. |
| Configurable IEC 61131-2 Compliance | Single REFDI resistor and external series resistors enable field-selectable Type 1, 2, or 3 behavior without firmware changes. |
| Integrated Field-Side Diagnostics | Simultaneous monitoring of VDD24, REFDI integrity, and die temperature enables predictive maintenance and system-level fault isolation. |
| Energyless LED Drivers | Diverts input current to LED_ pins during ON state-no extra power draw or external driver circuitry required for status indication. |
| Robust EMC Architecture | Built-in ±2kV surge and ±15kV ESD tolerance (with 470Ω+ series resistor) reduces external protection component count by up to 60%. |
| Flexible Power Architecture | Operates from either wide-range field supply (7–65V) or clean logic rail (3.0–5.5V), supporting both isolated and non-isolated system topologies. |
Applications
| Programmable Logic Controller (PLC) Digital Input Module | Distributed Control System (DCS) Remote I/O |
|---|---|
|
Use Scenario: 24V sensor signals from proximity switches, limit switches, and pushbuttons are conditioned and digitized at the rack-mounted I/O module. IC Role / Device Role / Timing Role: MAX22193ATP+T acts as the front-end digital input translator, providing low-latency, fault-monitored parallel outputs to the backplane controller. Use Value: 300ns propagation delay enables cycle times under 1ms in safety-critical motion control; READY signal prevents false-zero reads during field supply brownouts. |
Use Scenario: Field instruments (flow meters, pressure transmitters) transmit discrete status via 24V dry contacts to centralized DCS cabinets located hundreds of meters away. IC Role / Device Role / Timing Role: MAX22193ATP+T serves as the isolated field-side interface, converting long-wire sensor signals into noise-immune parallel logic for local processing or forwarding. Use Value: ±2kV surge immunity protects against induced transients on extended field wiring; energyless LED drivers provide local visual confirmation without loading the field loop. |
| Industrial Motor Control Starter Panel | Process Automation Safety Interlock System |
|
Use Scenario: Emergency stop buttons, thermal overload contacts, and position feedback from motor starters feed into a compact control panel mounted adjacent to the motor drive. IC Role / Device Role / Timing Role: MAX22193ATP+T functions as the high-integrity input conditioner, delivering deterministic timing and built-in diagnostics to the safety PLC's input scan engine. Use Value: 40ns channel skew ensures synchronized capture of multi-contact safety circuits; overtemperature monitoring detects enclosure overheating before thermal failure occurs. |
Use Scenario: Redundant safety relays monitor critical process valves and reactor interlocks in chemical plants, requiring certified fault detection and fail-safe reporting. IC Role / Device Role / Timing Role: MAX22193ATP+T provides dual-channel diagnostic input conditioning, where READY status and individual OPx outputs feed redundant safety controllers. Use Value: REFDI short detection and VDD24 undervoltage lockout prevent invalid readings during partial faults; IEC 61131-2 Type 3 compliance ensures compatibility with legacy safety-rated sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial digital input applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI ISO1211DR | Isolated 2-channel digital input with integrated galvanic isolation; requires external LDO and lacks parallel outputs or READY diagnostics. | Used where channel-level isolation is mandatory; not suitable for high-density 4-channel parallel bus architectures. | Select ISO1211DR only when reinforced isolation per channel is required and board space allows separate isolation + conditioning stages. |
| ADI MAX22190ATP+ | Quad digital input with serial SPI output (not parallel); identical pinout and field interface but no OP1–OP4 parallel outputs or READY pin. | Preferred for microcontroller-constrained designs where SPI bus sharing reduces GPIO count; lacks real-time parallel readout. | Choose MAX22190ATP+ when system architecture favors serial communication and diagnostic reporting via SPI, not immediate parallel access. |
Compared with MAX22190ATP+, the MAX22193ATP+ provides deterministic parallel readout and integrated READY fault signaling-critical for hard real-time PLC scan cycles-while the ISO1211DR trades density and diagnostics for per-channel isolation, increasing BOM cost and layout complexity.
Availability
MAX22193ATP+T is available at Aetrix Electronics and suitable for programmable logic controllers, distributed control systems, and industrial motor control applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MAX22193ATP+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets with precision, reliability, and innovation.
The MAX22193ATP+T belongs to Analog Devices' industrial interface portfolio, designed specifically for robust, high-speed digital input conditioning in harsh environments-enabling next-generation PLCs, DCS nodes, and safety-rated I/O systems.
FAQ
What is the maximum field supply voltage supported by the MAX22193ATP+T?
The MAX22193ATP+T supports a field supply voltage (VDD24) range of 7V to 65V. This wide input range allows direct connection to unregulated industrial 24V DC rails, including those with significant ripple or transient overvoltage. Absolute maximum rating is +70V, but continuous operation above 65V is not specified and may compromise reliability or lifetime. Operation below 7V disables the internal LDO and prevents proper function unless externally powered via VDD3.
How does the MAX22193ATP+T achieve IEC 61131-2 Type 2 compliance?
The MAX22193ATP+T achieves IEC 61131-2 Type 2 compliance by configuring RREFDI to 6kΩ and using a 470Ω external series resistor on each IN_ pin. This setup sets the nominal input current limit to 7.0mA and adjusts the voltage thresholds (VINF+ = 10.2V, VINF− = 7.2V) to meet Type 2 specifications. The device's accurate current limiting and hysteresis ensure consistent switching behavior across temperature and supply variations without external calibration.
Can the MAX22193ATP+T operate without a 24V field supply?
Yes, the MAX22193ATP+T can operate without a 24V field supply by powering it directly from a 3.0V to 5.5V source applied to the VDD3 pin. In this configuration, VDD24 must be left floating and EXTVM connected to VDD3 to disable field-supply monitoring. The internal LDO is disabled, reducing quiescent current and heat dissipation. All input channels remain functional, but field-side diagnostics (VDD24 monitoring, energyless LED drivers) are inactive.
What happens to the OP1–OP4 outputs during thermal shutdown?
During thermal shutdown, the MAX22193ATP+T places OP1–OP4 into high-impedance state-not logic-low-to prevent contention or unintended activation of downstream circuitry. This behavior is explicitly defined in the datasheet and occurs simultaneously with disabling the internal LDO, input channels, and REFDI circuitry. The READY output also goes high-impedance, signaling loss of valid operation to the host controller.
Is the MAX22193ATP+T pin-compatible with the MAX22190ATP+?
Yes, the MAX22193ATP+T is pin-compatible with the MAX22190ATP+-both use the same 20-pin TQFN package and share identical pin assignments for VDD24, VDD3, GND, IN1–IN4, LED1–LED4, REFDI, RDYEN, EXTVM, and the exposed pad. However, the MAX22193ATP+T substitutes OP1–OP4 parallel outputs and READY for the MAX22190ATP+'s SPI interface pins (SCLK, SDI, SDO, CS), meaning PCB layout reuse requires routing changes for the output interface.
MAX22193ATP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- DC Motor Controller
- Interface:
- Digital, Parallel
- Voltage - Supply:
- 3V ~ 5.5V, 7V ~ 65V
- Supplier Device Package:
- 20-TQFN (4x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX22193ATP+T FAQ
1.How can I place an order for MAX22193ATP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22193ATP+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 MAX22193ATP+T reliable?
The price and inventory of MAX22193ATP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22193ATP+T is usually 5 days.
3.What payment methods are accepted for MAX22193ATP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22193ATP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22193ATP+T?
MAX22193ATP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22193ATP+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 MAX22193ATP+T?
For technical support, including MAX22193ATP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22193ATP+T requirements.
6.How does Aetrix verify that MAX22193ATP+T is sourced from the original manufacturer or authorized distributors?
All MAX22193ATP+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 MAX22193ATP+T meets industry standards.
7.What is the process for return or replacement of MAX22193ATP+T?
All MAX22193ATP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22193ATP+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 MAX22193ATP+T part is unused and in its original packaging.
Return procedure for MAX22193ATP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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