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ST490ACN датащи(PDF) 3 Page - STMicroelectronics

номер детали ST490ACN
подробное описание детали  LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
PDF  11 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST490ACN датащи(HTML) 3 Page - STMicroelectronics

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ST490A
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ELECTRICAL CHARACTERISTICS
VCC =4.5V to5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA =25°C)
TRANSMITTER ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to Ta = 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
ISUPPLY No Load Supply Current
2
5
mA
CIN
Input Capacitance
1.8
pF
CYZ
Driver Output Capacitance
1.2
pF
COUT
Output Capacitance
2.3
pF
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOD1
Differential Drive Output
(No load)
VCC
V
VOD2
Differential Drive Output
(With Load)
RL=54Ω (RS-422) (Figure 1)
1.5
2.6
5
V
VOD3
Differential Drive Output
(With Load)
RL= 100Ω (RS-422) (Figure 1)
2
3
V
∆V
OD
Change in magnitude of
Driver Differential Output
Voltage for Complementary
Output States (Note1)
RL=54Ω or 100Ω (Figure 1)
0
0.2
V
VOC
Driver Common Mode
Output Voltage
RL=54Ω (Figure 1)
1
3
V
∆V
OC
Change in magnitude of
Driver Common Mode
Output Voltage (Note1)
RL=54Ω (Figure 1)
0
0.2
V
IOFF
Power Off Output Current
VCC =0V
VO=-7V to 12V
± 100
µA
IOSD
Driver Short Circuit Output
Current
VO=-7V to 12V
± 35
± 250
mA
VIL
Input Logic Threshold Low
0.8
V
VIH
Input Logic Threshold High
2
V



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