ST490A 查看數據表（PDF） - STMicroelectronics
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ST490A Datasheet PDF : 17 Pages
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ST490A
Electrical characteristics
Table 7.
Symbol
Receiver electrical characteristics
(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are
referred to TA=25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
IIN1 Logic input current
IIN2 Input current (A, B)
VTH
∆VTH
VOH
VOL
RRIN
IOSR
Receiver differential threshold
voltage
Receiver input hysteresis
Receiver output high voltage
Receiver output low voltage
Receiver input resistance
Receiver short-circuit current
Other input=0V
VCC= 0 or 5.25V
VIN=12V
VIN=-7V
VCM = -7V to 12V
VCM = 0V
IOUT = -8mA, VID = 200mV
IOUT = 8mA, VID = -200mV
VCM = -7V to 12V
VO = 0V to VCC
± 2.0 µA
0.5
1
mA
-0.35 -0.8 mA
-0.2
0.2
V
70
mV
3.5 4.7
V
0.2 0.4
V
12
24
KΩ
7
95 mA
Table 8.
Symbol
Driver switching characteristics
(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are
referred to TA=25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
DR
tPLH
tPHL
tSKEW
Maximum data rate
Propagation delay input
to output
Differential output delay
skew
Jitter <5%
RL= 54Ω, CL1=CL2=50pF, (Figure 1.)
RL= 54Ω, CL1=CL2=50pF, (Figure 1.)
25
50
Mbps
10
16
ns
1
3
ns
tTLH
tTHL
Rise or fall differential
time
RL= 54Ω, CL1=CL2=50pF, (Figure 1.)
8
12
ns
Table 9.
Symbol
Receiver Switching Characteristics
(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are
referred to TA=25°C)
Parameter
Test Conditions
Min. Typ. Max. Unit
tPLH
tPHL
Propagation delay input
to output
CL = 15pF, (Figure 2., Figure 4.)
tSKD
|tPLH - tPHL| Receiver
output skew
CL = 15pF, (Figure 2., Figure 4.)
19
30
ns
1
3
ns
tTLH
tTHL
Rise or fall time
CL = 15pF, (Figure 2., Figure 4.)
8
ns
7/17
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