Electrical characteristics

ST3485EB, ST3485EC, ST3485EI, ST3485EIY

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DocID9102 Rev 11

Table 10: Driver switching characteristics (VCC = 3 V to 3.6 V, TA = 0 to 70 °C for

ST3485ECDR, TA = -40 to 85 °C for ST3485EBDR, TA = -40 to 125 °C for ST3485EIDT and

ST3485EIYDT, unless otherwise specified. Typical values are referred to TA = 25 °C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Maximum data rate

12

15

Mbps

Differential output delay

Figure 6)

18

30

ns

Differential output

transition time

Figure 6)

12

20

Propagation delay

Figure 10)

18

30

propagation delay skew

(1)

Figure 10)

2

5

Output enable time

= 110 Ω (Figure 11 and Figure 12)

19

35

Output enable time

= 110 Ω (Figure 7 and Figure 8)

30

50

Output disable time

= 110 Ω (Figure 7 and Figure 8)

19

35

Output disable time

= 110 Ω (Figure 11 and Figure 12)

30

50

Differential output delay

skew

1

3

Driver enable from

shutdown to output high

= 110 Ω (Figure 7 and Figure 8)

30

50

Driver enable from

shutdown to output low

= 110 Ω (Figure 11 and Figure 12)

19

35

Notes: