Overview
The NXP MC33660BEFR2 is a serial link bus interface device designed to provide bi-directional half-duplex communication interfacing, particularly in automotive diagnostic applications. It is engineered to interface between the vehicle’s on-board microcontroller and systems off-board the vehicle via the ISO K line, adhering to the Diagnostic Systems ISO9141 specification. Built using NXP’s SMARTMOS process, this device combines CMOS logic, bipolar/MOS analog circuitry, and DMOS power FETs to ensure robust performance under various temperature and voltage conditions.
Key Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage (VBB) | 8.0 V to 18 V |
| Operating Temperature | -40 °C to 125 °C |
| Package Type | 8-pin SOIC |
| Data Rate | Up to 150 kbps |
| ESD Protection | ±25000 V (with additional components) |
| Thermal Shutdown | With hysteresis |
| Bus Capacitance | Up to 10 nF |
| Storage Temperature | -55 °C to 150 °C |
| Power Dissipation (TA = 25 °C) | 100 mW |
| Thermal Resistance (Junction-to-Ambient) | 150 °C/W |
Key Features
- Operates over a wide supply voltage range of 8.0 V to 18 V
- Operating temperature range of -40 °C to 125 °C
- Interfaces directly to standard CMOS microprocessors
- ISO K line pin protected against shorts to battery and over-temperature conditions
- Thermal shutdown with hysteresis
- ISO K line pin capable of high currents
- Standby mode: no VBAT current drain with VDD at 5.0 V
- Low current drain during operation with VDD at 5.0 V
- 8.0 kV ESD protection attainable with few additional components
Applications
The MC33660BEFR2 is primarily designed for automotive diagnostic applications, facilitating communication between the vehicle’s on-board microcontroller and external systems via the ISO K line. However, its robust design and versatile features make it suitable for other serial communication applications where reliable and high-speed data transfer is required.
Q & A
- What is the primary application of the MC33660BEFR2?
The primary application is in automotive diagnostic systems, interfacing between the vehicle’s on-board microcontroller and external systems via the ISO K line.
- What is the operating temperature range of the MC33660BEFR2?
The operating temperature range is -40 °C to 125 °C.
- What is the maximum data rate supported by the MC33660BEFR2?
The maximum data rate is up to 150 kbps.
- How is the ISO K line pin protected?
The ISO K line pin is protected against shorts to battery and over-temperature conditions, with thermal shutdown and hysteresis.
- What type of package does the MC33660BEFR2 come in?
The device is packaged in an 8-pin SOIC.
- Does the MC33660BEFR2 have ESD protection?
Yes, it can achieve up to ±25000 V ESD protection with a few additional components.
- How does the device handle standby mode?
In standby mode, there is no VBAT current drain when VDD is at 5.0 V.
- Can the MC33660BEFR2 be used in applications other than automotive diagnostics?
Yes, it is suitable for other serial communication applications requiring reliable and high-speed data transfer.
- What is the storage temperature range for the MC33660BEFR2?
The storage temperature range is -55 °C to 150 °C.
- How much power can the MC33660BEFR2 dissipate at 25 °C?
The device can dissipate up to 100 mW at 25 °C.
