Features: `K-Bus Transceiver:* PNP-open emitter driver with slew rate control and current limitation* BUS input voltage -24V ... 30V (independently of VS)* ISO 9141 and ODBII compliant* Possibility of BUS wake up`Operating voltage VS = 5.5 ... 16 V`Very low standby current consumption <100 A i...
TH3122: Features: `K-Bus Transceiver:* PNP-open emitter driver with slew rate control and current limitation* BUS input voltage -24V ... 30V (independently of VS)* ISO 9141 and ODBII compliant* Possibility ...
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Parameter |
Symbol |
Condition |
Min |
Max |
Unit |
Supply voltage at VS [2] |
VS |
-1.0 |
16 |
V | |
T 1min |
- |
30 | |||
T 500 ms |
- |
40 | |||
Input voltage at pin BUS [2] |
VINBUS |
-24 |
30 | ||
T 500 ms |
- |
40 | |||
Difference VS-VCC |
VS-VCC |
-0.3 |
40 | ||
Input voltage at pin EN and SI |
VINENSI |
-0.3 |
VS+0.3 | ||
Input voltage at pin VTR, TxD, SEN/STA, SO, RESET, SENSE |
VIN |
-0.3 |
VCC+0.3 | ||
Input current at pin EN, VTR, SI, SO, SEN/STA, TxD, RxD,RESET, SENSE |
IIN |
-25 |
25 |
mA | |
Input current for short circuit of pin VS and VCC |
IShort |
-500 |
500 |
mA | |
Power dissipation |
P0 |
Internal limited [3] [4] |
mW | ||
Thermal resistance from junction to ambient |
RTHJA |
50 |
K/W | ||
Junction temperature [4] |
TJ |
150 |
|||
Storage temperature |
TSTG |
-55 |
150 |
[1] Junction temperature is defined in IEC 747-1
[2] The current and voltage values are valid independent from each other.
[3] The maximum power dissipation is defined by the ambient temperature and the thermal resistance. It can be calculated with P0 =(VS-VCC)*IVCC+PBUS. PBUS is the BUS driver output with normally 25 mW
[4] see over temperature protection
The TH3122 consists of a low drop voltage regulator 5V/100mA and a K-Bus transceiver. The transceiver TH3122 is suitable for K-Bus systems conform to ISO 9141.
The TH3122 combination of voltage regulator and bus transceiver in combination with the monitoring functions make it possible to develop simple, but powerful and cheap nodes in K-Bus systems.The wide output current area and the configurable reset time and reset voltage works together with many different microcontrollers.