ST485ER

Electrical characteristics

7/19

4.2

Driver switching characteristics

400

300

900

500

µA

µA

Driver short-circuit current,

(3)

35

250

mA

Driver short-circuit current,

(3)

35

250

mA

Receiver short-circuit

current

795

mA

1.

All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are

referenced to device ground unless specified.

2.

3.

Applies to peak current. See typical Operating Characteristics.

Table 6.

DC Electrical characteristics

Symbol

Parameter

Min.

Typ.

Max.

Unit

Table 7.

Driver switching characteristics

Symbol

Parameter

1.

All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are

referenced to device ground unless specified.

Min.

Typ.

Max.

Unit

Propagation Delay Input

to Output

(See

Figure 4. and Figure 6.)

10

30

60

ns

Output Skew to Output

(See

Figure 4. and Figure 6.)

510

ns

Rise or Fall Time

(See

Figure 4. and Figure 6.)

315

40

ns

Output Enable Time

(See

Figure 5. and Figure 7.)

70

90

ns

Output Enable Time

(See

Figure 5. and Figure 7.)

70

90

ns

Output Disable Time

(See

Figure 5. and Figure 7.)

70

90

ns

Output Disable Time

(See

Figure 5. and Figure 7.)

70

90

ns

Output AB Capacitance

43

pF