ST485E(2007) データシートの表示（PDF） - STMicroelectronics
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ST485E Datasheet PDF : 19 Pages
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Electrical characteristics
4
Electrical characteristics
ST485E
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
±8
KV
Table 6.
Symbol
DC Electrical characteristics (VCC = 5V ± 5%, TA = TMIN to TMAX, unless otherwise
specified. Typical values are referred to TA = 25°C)
Parameter
Test conditions (1)
Min. Typ. Max. Unit
VOD1
VOD2
∆VOD
VOC
∆VOC
VIH
VIL
IIN1
IIN2
VTH
∆VTH
VOH
VOL
IOZR
RIN
ICC
IOSD1
Differential driver output (No
Load)
Differential driver output
(With Load)
Change in magnitude of
driver differential output
voltage for complementary
output states
RL = 27Ω (RS-485) (Figure 2.)
RL = 50Ω (RS-422) (Figure 2.)
RL = 27Ω or 50Ω (Figure 2.)
Driver common-mode output
voltage
RL = 27Ω or 50Ω (Figure 2.)
Change in magnitude of
driver common-mode output
voltage for complementary
output states
RL = 27Ω or 50Ω (Figure 2.)
Input high voltage
RE, DE, DI
Input low voltage
RE, DE, DI
Input current
RE, DE, DI
Input current (A, B)
Receiver differential
threshold voltage
VCM = 0V or 5.25V, VDE = 0V
VIN = 12V
VIN = -7V
VCM = -7 to 12V
Receiver input hysteresis VCM = 0V
Receiver output high voltage IO = -4mA, VID = 200mV
Receiver output low voltage IO = 4mA, VID = -200mV
3-State (high impedance)
output current at receiver
VO = 0.4 to 2.4V
Receiver input resistance
No load supply current (2)
Driver short-circuit current,
VO=High
VCM = -7 to 12V
VRE = 0V or VCC
VDE = VCC
VDE = 0V
VO = -7 to 12V (3)
5
V
1.5
5
V
5
V
0.2
V
3
V
0.2
V
2.0
V
0.8
V
± 2 µA
1
mA
-0.8 mA
-0.2
0.2
V
70
mV
3.5
V
0.4
V
± 1 µA
24
KΩ
400 900 µA
300 500 µA
35
250 mA
6/19
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