SI8421AD Datasheet, PDF(9/37 Page) List of Unclassifed Manufacturers – LOW-POWER, SINGLE AND DUAL-CHANNEL DIGITAL ISOLATORS

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SI8421AD Datasheet, PDF (9/37 Pages) List of Unclassifed Manufacturers – LOW-POWER, SINGLE AND DUAL-CHANNEL DIGITAL ISOLATORS

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Si8410/20/21 (5 kV)

Si8422/23 (2.5 & 5 kV)

Table 2. Electrical Characteristics (Continued)

(VDD1 = 3.3 V Â±10%, VDD2 = 3.3 V Â±10%, TA = â40 to 125 Â°C)

Parameter

Symbol Test Condition

Min

Typ

Max Unit

1 Mbps Supply Current (All inputs = 500 kHz square wave, CL = 15 pF on all outputs)

Si8410Ax, Bx

VDD1

VDD2

2.0

3.0

1.1

1.7

Si8420Ax, Bx

VDD1

VDD2

3.5

5.3

1.9

2.9

Si8421Ax, Bx

VDD1

VDD2

2.8

4.2

2.8

4.2

Si8422Ax, Bx

VDD1

VDD2

2.8

4.2

2.8

4.2

Si8423Ax, Bx

VDD1

VDD2

3.4

5.1

1.9

2.9

10 Mbps Supply Current (All inputs = 5 MHz square wave, CL = 15 pF on all outputs)

Si8410Bx

VDD1

VDD2

Si8420Bx

VDD1

VDD2

Si8421Bx

VDD1

VDD2

Si8422Bx

VDD1

VDD2

Si8423Bx

VDD1

VDD2

2.0

3.0

1.3

1.8

3.5

5.3

2.3

3.2

3.0

4.4

3.0

4.4

3.0

4.4

3.0

4.4

3.4

5.1

2.2

3.1

Notes:

1. The nominal output impedance of an isolator driver channel is approximately 50 ï, Â±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.

Rev. 1.3

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