Datasheet

TMS320LF2406
or
TMS320LF2407
IOPF6
1
2
3
4
8
7
6
5
D
GND
V
CC
R
CANH
CANL
V
ref
10 kΩ
to
100 kΩ
R
S
Slope Control Resistance – kΩ
0
5
10
15
20
25
0 10 20 30 40 50 60 70 80 90
DRIVER OUTPUT SIGNAL SLOPE
vs
SLOPE CONTROL RESISTANCE
4.70 6.8 10 15 22 33 47 68 100
Driver Outout Signal Slop –
sµ
V/
SN65HVD230
SN65HVD231
SN65HVD232
www.ti.com SLOS346K –MARCH 2001– REVISED FEBRUARY 2011
from R
S
(pin 8) to ground or to a logic low voltage, as shown in Figure 32. The slope of the driver output signal is
proportional to the pin's output current. This slope control is implemented with an external resistor value of 10 kΩ
to achieve a ≉ 15 V/μs slew rate, and up to 100 kΩ to achieve a ≉ 2.0 V/μs slew rate as displayed in Figure 33.
Typical driver output waveforms from a pulse input signal with and without slope control are displayed in
Figure 34. A pulse input is used rather than NRZ data to clearly display the actual slew rate.
Figure 32. Slope Control/Standby Connection to a DSP
Figure 33. HVD230 Driver Output Signal Slope vs Slope Control Resistance Value
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Product Folder Link(s): SN65HVD230 SN65HVD231 SN65HVD232