ST490AB 데이터 시트보기 (PDF) - STMicroelectronics
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ST490AB Datasheet PDF : 17 Pages
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Electrical characteristics
4
Electrical characteristics
ST490AB
Table 6.
Symbol
Electrical characteristics
(VCC = 4.5 V to 5.5 V, TA = -40 to 85 °C, unless otherwise specified. Typical values are
referred to TA = 25 °C)
Parameter
Min. Typ. Max. Unit
ISUPPLY
CIN
CYZ
COUT
No load supply current
Input capacitance
Driver output capacitance
Output capacitance
2
5
mA
1.8
pF
1.2
pF
2.3
pF
Table 7.
Symbol
Transmitter electrical characteristics
(VCC = 4.5 V to 5.5 V, TA = -40 to 85 °C, unless otherwise specified. Typical values are
referred to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
VOD1
VOD2
Differential drive output (no load)
Differential drive output (with
load)
RL= 54Ω (RS-422) (Figure 1)
VCC
V
1.5 2.6
5
V
VOD3
Differential drive output (with
load)
RL= 100Ω (RS-422) (Figure 1)
2
3
V
ΔVOD
VOC
Change in magnitude of driver
differential output voltage for
complementary output states
Driver common mode output
voltage
RL= 54Ω or 100Ω (Figure 1)
RL= 54Ω (Figure 1)
0
0.2
V
1
3
V
ΔVOC
IOFF
IOSD
VIL
VIH
Change in magnitude of driver
common mode output voltage
RL= 54Ω (Figure 1)
Power off output current
VCC = 0V, VO=-7V to 12V
Driver short circuit output current VO=-7V to 12V
Input logic threshold low
Input logic threshold high
0
0.2
V
± 100 µA
± 35
± 250 mA
0.8
V
2
V
6/17
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