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SI844X датащи(PDF) 8 Page - Silicon Laboratories

номер детали SI844X
подробное описание детали  FOUR AND FIVE-CHANNEL DIGITAL ISOLATORS
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производитель  SILABS [Silicon Laboratories]
домашняя страница  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI844X датащи(HTML) 8 Page - Silicon Laboratories

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Si844x/5x QSOP
8
Rev. 1.2
Table 4. Electrical Characteristics
(VDD1 = 3.3 V±10%, VDD2 = 3.3 V±10%, TA = –40 to 125 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
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
3.1
V
Low Level Output Voltage
VOL
lol = 4 mA
0.2
0.4
V
Input Leakage Current
IL
——
±10
µA
Output Impedance1
ZO
—85
Enable Input High Current
IENH
VENx =VIH
—2.0
µA
Enable Input Low Current
IENL
VENx =VIL
—2.0
µA
DC Supply Current (All inputs 0 V or at supply)
Si8455Bx
VDD1
VDD2
VDD1
VDD2
All inputs 0 dc
All inputs 0 dc
All inputs 1 dc
All inputs 1 dc
1.6
2.9
7.0
3.1
2.4
4.4
10.5
4.7
mA
Si8442Bx
VDD1
VDD2
VDD1
VDD2
All inputs 0 dc
All inputs 0 dc
All inputs 1 dc
All inputs 1 dc
2.3
2.3
4.5
4.5
3.5
3.5
6.8
6.8
mA
1 Mbps Supply Current (All inputs = 500 kHz square wave, CI = 15 pF on all outputs)
Si8455Bx
VDD1
VDD2
4.3
3.5
6.5
5.3
mA
Si8442Bx
VDD1
VDD2
3.6
3.6
5.4
5.4
mA
10 Mbps Supply Current (All inputs = 5 MHz square wave, CI = 15 pF on all outputs)
Si8455Bx
VDD1
VDD2
4.3
4.8
6.5
6.7
mA
Si8442Bx
VDD1
VDD2
4.2
4.2
5.9
5.9
mA
Notes:
1. The nominal output impedance of an isolator driver channel is approximately 85 , ±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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