L9904 データシートの表示（PDF） - STMicroelectronics
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L9904 Datasheet PDF : 17 Pages
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L9904
Table 5. Electrical Characteristcs (continued)
(8V < VVS < 20V, VEN = HIGH, -40°C TJ 150°C, unless otherwise specified. The voltages are refered to
GND and currents are assumed positive, when current flows into the pin
Symbol
Parameter
VTXH Input high level
VTXh Input hysteresis voltage 2)
RTX Internal pull up resistance to
internal VCC 3)
ISO interface, receiver output (RX)
VRXL Output voltage high stage
RRX
RRXON
Internal pull up resistance
to internal VCC 3)
ON resistance to ground
tRXH Output high delay time
tRXL Output low delay time
ISO interface, K-line (K)
VKL Input low level
Test Condition
VTX = 0
TX = HIGH; IRX = 0; VK = VVS
TX = HIGH;
VRX = 0V
TX = LOW;
IRX = 1mA
Fig. 1
VKH Input high level
VKh Input hysteresis voltage 2)
IKH Input current
VTX = HIGH
RKON ON resistance to ground
VTX = LOW; IK=10mA
IKSC Short circuit current
VTX = LOW
fK
Transmission frequency
2. not tested in production: guaranteed by design and verified in characterization
3. Internal VVCC is 4.5V ... 5.5V
4. see page 18 for calculation of programmable cross conduction protection time
tKr
Rise time
VVS = 13.5V; Fig. 1
External loads at K-line:
RK = 510 pull up
to VVS
CK = 2.2nF to GND
tKf
Fall time
tKH Switch high delay time
tKL Switch low delay time
tSH Short circuit detection time
VVS = 13.5V;
TX = LOW
VK > 0.55 · VVS
Charge pump
VCP Charge pump voltage
VVS = 8V
VVS = 13.5V
VVS = 20V
Min.
3.5
10
Typ.
1
20
Max.
40
Unit
V
V
k
4.5
5.5
V
5
10
20
k
40
90
0.5
s
0.5
s
-20V
0.45 ·
VVS
0.55 ·
VVS
0.025·
VVS
VVS
0.8V
-5
25
A
10
30
40
130
mA
60
100
kHz
2
6
s
2
6
s
4
17
s
4
17
s
10
40
s
VVS+
7V
VVS+
10V
VVS+
10V
VVS+
14V
VVS+
14V
VVS
+14V
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