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Si8640BB-B-IS1 Datasheet(PDF) 4 Page - STMicroelectronics

No. de pieza Si8640BB-B-IS1
Descripción Electrónicos  LOW-POWER QUAD-CHANNEL DIGITAL ISOLATOR
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

Si8640BB-B-IS1 Datasheet(HTML) 4 Page - STMicroelectronics

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4
Rev. 1.6
Si8640/41/42/45
1. Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit
Ambient Operating Temperature*
TA
–40
25
125
°C
Supply Voltage
VDD1
2.5
5.5
V
VDD2
2.5
5.5
V
*Note: The maximum ambient temperature is dependent on data frequency, output loading, number of operating channels,
and supply voltage.
Table 2. Electrical Characteristics
(VDD1 = 5 V ±10%, VDD2 = 5 V ±10%, TA =–40 to 125°C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
VDD Undervoltage Thresh-
old
VDDUV+
VDD1, VDD2 rising
1.95
2.24
2.375
V
VDD Undervoltage Thresh-
old
VDDUV–
VDD1, VDD2 falling
1.88
2.16
2.325
V
VDD Undervoltage
Hysteresis
VDDHYS
50
70
95
mV
Positive-Going Input Thresh-
old
VT+
All inputs rising
1.4
1.67
1.9
V
Negative-Going Input
Threshold
VT–
All inputs falling
1.0
1.23
1.4
V
Input Hysteresis
VHYS
0.38
0.44
0.50
V
High Level Input Voltage
VIH
2.0
V
Low Level Input Voltage
VIL
——
0.8
V
High Level Output Voltage
VOH
loh = –4 mA
VDD1,VDD2 –0.4
4.8
V
Low Level Output Voltage
VOL
lol = 4 mA
0.2
0.4
V
Input Leakage Current
IL
——
±10
µA
Output Impedance1
ZO
—50
Enable Input High Current
IENH
VENx =VIH
—2.0
µA
Enable Input Low Current
IENL
VENx =VIL
—2.0
µA
Notes:
1. The nominal output impedance of an isolator driver channel is approximately 50
, ±40%, which is a combination of
the value of the on-chip series termination resistor and channel resistance of the output driver FET. When driving loads
where transmission line effects will be a factor, output pins should be appropriately terminated with controlled
impedance PCB traces.
2. tPSK(P-P) is the magnitude of the difference in propagation delay times measured between different units operating at
the same supply voltages, load, and ambient temperature.
3. Start-up time is the time period from the application of power to valid data at the output.


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