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ST485ER データシート(PDF) 6 Page - STMicroelectronics

部品番号 ST485ER
部品情報  짹15KV ESD protected, Low power RS-485/RS-422 transceiver
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST485ER データシート(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
ST485ER
6/19
4
Electrical characteristics
4.1
DC Electrical characteristics
VCC = 5V ± 5%, TA = TMIN to TMAX , unless otherwise specified. Typical values are referred
to TA = 25°C)
Table 5.
ESD Performance: transmitter outputs, receiver inputs
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
ESD
ESD Protection voltage
Human body model
±15
KV
ESD
ESD Protection voltage
IEC-1000-4-2
±8KV
Table 6.
DC Electrical characteristics
Symbol
Parameter
Test conditions (1)
Min.
Typ.
Max.
Unit
VOD1
Differential driver output (no
load)
5V
VOD2
Differential driver output
(with load)
RL = 27Ω (RS-485) (Figure 2.)
RL = 50Ω (RS-422) (Figure 2.)
1.5
5
5
V
V
∆VOD
Change in magnitude of
driver differential output
voltage for complementary
output states
RL = 27Ω or 50Ω (Figure 2.)0.2
V
VOC
Driver common-mode
output voltage
RL = 27Ω or 50Ω (Figure 2.)3
V
∆VOC
Change in magnitude of
driver common-mode output
voltage for complementary
output states
RL = 27Ω or 50Ω (Figure 2.)0.2
V
VIH
Input high voltage
RE, DE, DI
2.0
V
VIL
Input low voltage
RE, DE, DI
0.8
V
IIN1
Input current
RE, DE, DI
± 2µA
IIN2
Input current (A, B)
VCM = 0V or 5.25VVDE = 0V
VIN = 12V
VIN = -7V
1
-0.8
mA
mA
VTH
Receiver differential
threshold voltage
VCM = -7 to 12V
-0.2
0.2
V
∆VTH
Receiver input hysteresis
VCM = 0V
70
mV
VOH
Receiver output high
voltage
IO = -4mAVID = 200mV
3.5
V
VOL
Receiver output low voltage IO = 4mAVID = -200mV
0.4
V
IOZR
3-State (high impedance)
output current at receiver
VO = 0.4 to 2.4V
± 1µA
RIN
Receiver input resistance
VCM = -7 to 12V
24
K


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