Si8450/51/52/55

6

Rev. 1.5

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

Si8450Bx, Si8455Bx

—

—

4.3

4.8

6.5

6.7

mA

Si8451Bx

—

—

4.4

5.0

6.2

7.0

mA

Si8452Bx

—

—

4.6

4.8

6.4

6.7

mA

100 Mbps Supply Current (All inputs = 50 MHz square wave, CI = 15 pF on all outputs)

Si8450Bx, Si8455Bx

—

—

4.6

24

6.9

30

mA

Si8451Bx

—

—

8.6

20.4

10.8

25.5

mA

Si8452Bx

—

—

12.6

16.5

15.8

20.6

mA

Timing Characteristics

Si845xAx

Maximum Data Rate

0

—

1.0

Mbps

Minimum Pulse Width

—

—

250

ns

Propagation Delay

See Figure 2

—

—

35

ns

Pulse Width Distortion

PWD

See Figure 2

—

—

25

ns

Propagation Delay Skew2

—

—

40

ns

Channel-Channel Skew

—

—

35

ns

Table 3. Electrical Characteristics (Continued)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

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.

the same supply voltages, load, and ambient temperature.

3. See "3. Errata and Design Migration Guidelines" on page 26 for more details.

4. Start-up time is the time period from the application of power to valid data at the output.