Overview
The E-L9637D is a monolithic integrated circuit designed by STMicroelectronics, specifically tailored for automotive diagnostic applications. It incorporates standard ISO 9141 compatible interface functions, enabling bidirectional serial communication. This device is particularly useful in vehicle diagnostic systems, providing a robust and reliable interface between the vehicle's onboard computer and external diagnostic tools.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Operating Temperature | -40.0 | 150.0 | °C |
| Operating Voltage | 4.5 | 36.0 (40 V for transients) | V |
| Supply Voltage Range | 3 | 7 | VDC |
| Packing Type | Tube | ||
| RoHS Compliance | Ecopack2 | ||
| Package Name | SO-8 | ||
| Standby Mode Current | 1 mA @ VCC ≤ 0.5 V | mA | |
| Quiescent Current in Off Condition | 120 µA | µA | |
| K Output Current Limitation | 60 mA | mA |
Key Features
- ISO 9141 Compatibility: The E-L9637D is designed to meet the standards of the ISO 9141 interface, ensuring compatibility with automotive diagnostic systems.
- Wide Operating Voltage Range: The device operates within a voltage range of 4.5 V to 36 V, with transient protection up to 40 V, and reverse supply protection down to -24 V.
- Low Quiescent Current: It features a low quiescent current in the off condition, typically 120 µA, and a standby mode with very low current consumption (≤ 1 mA @ VCC ≤ 0.5 V).
- Bidirectional I/O Pin: The K pin is bidirectional with a supply voltage-dependent input threshold, ensuring flexible communication.
- Overtemperature Shut Down: The device includes an overtemperature shut-down function to protect against thermal overload.
- EMI Robustness: Optimized for low EMI, the device includes controlled output slope and high input impedance for open VS or GND connections.
- Integrated Pull-Up Resistors: Integrated pull-up resistors for TX, RX, and LO pins simplify the circuit design.
Applications
The E-L9637D is primarily used in automotive diagnostic systems, enabling communication between the vehicle's onboard computer and external diagnostic tools. It is suitable for various automotive applications where ISO 9141 interface compatibility is required.
Q & A
- What is the primary function of the E-L9637D?
The E-L9637D is a monolithic bus driver designed for bidirectional serial communication in automotive diagnostic applications, complying with the ISO 9141 standard.
- What is the operating temperature range of the E-L9637D?
The operating temperature range is from -40°C to 150°C.
- What is the operating voltage range of the E-L9637D?
The device operates within a voltage range of 4.5 V to 36 V, with transient protection up to 40 V.
- Is the E-L9637D RoHS compliant?
- What type of package does the E-L9637D come in?
The device is packaged in an SO-8 format and is available in tubes or tape and reel.
- What is the quiescent current in the off condition for the E-L9637D?
The quiescent current in the off condition is typically 120 µA.
- Does the E-L9637D have overtemperature protection?
- What is the K output current limitation of the E-L9637D?
The K output current limitation is typically 60 mA.
- Is the E-L9637D optimized for EMI robustness?
- What are the typical applications of the E-L9637D?
The E-L9637D is used in automotive diagnostic systems, enabling communication between the vehicle's onboard computer and external diagnostic tools.
