SI8641BD-B-IS Datasheet, PDF (13/44 Pages) STMicroelectronics – LOW-POWER QUAD-CHANNEL DIGITAL ISOLATOR

Si8640/41/42/45
Table 4. Electrical Characteristics (Continued)
(V_DD1 = 2.5 V ±5%, V_DD2 = 2.5 V ±5%, T_A = –40 to 125 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max Unit
1 Mbps Supply Current (All inputs = 500 kHz square wave, CI = 15 pF on all outputs)
Si8640Bx, Ex, Si8645Bx
V_DD1
V_DD2
—
3.6
5.0
mA
—
2.9
4.0
Si8641Bx, Ex
V_DD1
V_DD2
—
3.4
4.8
mA
—
3.3
4.6
Si8642Bx, Ex
V_DD1
V_DD2
—
3.3
4.6
mA
—
3.3
4.6
10 Mbps Supply Current (All inputs = 5 MHz square wave, CI = 15 pF on all outputs)
Si8640Bx, Si8645Bx
V_DD1
V_DD2
—
3.6
5.0
mA
—
3.1
4.3
Si8641Bx, Ex
V_DD1
V_DD2
—
3.5
4.8
mA
—
3.4
4.8
Si8642Bx, Ex
V_DD1
V_DD2
—
3.4
4.8
mA
—
3.4
4.8
100 Mbps Supply Current (All inputs = 50 MHz square wave, CI = 15 pF on all outputs)
Si8640Bx, Ex, Si8645Bx
V_DD1
V_DD2
—
3.6
5.0
mA
—
9.9
12.8
Si8641Bx, Ex
V_DD1
V_DD2
—
5.2
7.0
mA
—
8.5
11.1
Si8642Bx, Ex
V_DD1
V_DD2
—
6.9
9.0
mA
—
6.9
9.0
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. t_PSK(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.
Rev. 1.6
13