TH8061JDC データシートの表示（PDF） - Melexis Microelectronic Systems

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TH8061JDC

LIN Bus Transceiver with integrated Voltage Regulator

Melexis Microelectronic Systems  

TH8061

LIN Bus Transceiver with integrated Voltage Regulator

Application Hints

Operating during Disturbances

The absence of VSUP ,VCC or GND connection or ground

shift either alone or in any combination, do not influence

or disturb the communication between other bus nodes.

Undervoltage

The reset unit secures the correct behavior of the driver

during undervoltage. The BUS pin generates the reces-

sive state if VCC < VPOR. The inputs have pull-up or pull-

down characteristics.

With 4.5V ≤ VCC ≤ 5.25V the bus connection operates

within the correct parameters .

If VCC ≤4.5V the TxD signal is transmitted to the bus. The

receive mode is also activ.

Regulator Circuitry

The choice and dimension of the capacitor on VCC is de-

termined by application point of view. Important parame-

ters are the current difference on load changes and the

maximum short time voltage drop.

The VCC pin must be connected to a min. 2µF capacitor

for stable operating of the regulator in the whole operat-

ing range.

Short Circuit Proof

All in- and outputs are short circuit proof to battery and

ground. A thermal shut down circuit prevent VCC and

BUS from any damage

Baud Rate

The TH8061 has a maximum Baud rate of 20 kBaud

(CBUS<10nF). This baud rate is supported by the

typically value for the slew rate at BUS of ± 2V/µs.

Datasheet Rev 1.2 Feb 2001

Page 6

www.melexis.com

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