L9637

ISO 9141接口 ISO 9141 INTERFACE

The is a monolithic integrated circuit containing standard ISO 9141 compatible interface functions.

**Key Features**

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Defined OFF output status in undervoltage condition and VS or GND interruption

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K output current limitation, typ. IK = 60 mA

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High input impedance for open VS or GND connection

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Controlled output slope for low EMI

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Defined K output OFF for TX input open

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Defined output ON status of LO or RX for open LI or K inputs

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EMI robustness optimized

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Integrated pull up resistors for TX, RX and LO

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Overtemperature shut down function Selective to K-I/O pin

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Bidirectional K-I/O pin with supply voltage dependent input threshold

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Operating power supply voltage range 4.5 V ≤ VS ≤ 36 V 40 V for transients

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Standby mode with very low current consumption ISSB ≤ 1 mA @ VCC ≤ 0.5 V

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Reverse supply battery protected down to VS ≥ -24 V

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TTL compatible TX input

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Wide input and output voltage range -24 V ≤ VK ≤ VS

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Low quiescent current in off condition ISOFF = 120 µA