ST75185C

Electrical characteristics

7/22

Note:

1

The algebraic convention, where the more positive (less negative) limits designated as

maximum, is used in this datasheet for logic levels only (e.g. if - 10 V is a maximum, the

typical value is a more negative voltage).

2

Output short circuit conditions must maintain the total power dissipation below absolute

maximum ratings.

3

Test conditions are those specified by EIA-232-E and as listed above.

4

Measured between -3 V and 3 V points of output waveform (EIA-232-E conditions), all

unused inputs are tied.

Table 8.

Driver electrical characteristics over operating free-air temperature range

Symbol

Parameter

Test conditions

Value

Unit

Min.

Typ.

Max.

High level output voltage

(See Figure 3)

67.5

V

Low level output voltage

(Note 3)

(See Figure 3)

-7.5

-6

V

High level input current

µA

Low level input current

−1.6

mA

High level short circuit

output current (Note 4)

(See Figure 3)

-4.5

−12

−19.5

mA

Low level short circuit output

current

(See Figure 3)

4.5

12

19.5

mA

Output resistance

300

Ω

Table 9.

Driver switching characteristics

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

Propagation Delay Time, Low to

High Level Output

(See Figure 5, Figure 6)

315

500

ns

Propagation Delay Time, High to

Low Level Output

(See Figure 5, Figure 6)

75

175

ns

Transition Time Low to High Level

Output

(See Figure 5, Figure 6)

60

100

ns

(Note 4, Figure 5, Figure 6)

1.7

2.5

μs

Transition Time High to Low Level

Output

(See Figure 5, Figure 6)

40

7.5

ns

(Note 4, Figure 5, Figure 6)

1.5

2.5

μs