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DRIVER SECTION

Switching Characteristics

SN75185

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS181D–DECEMBER 1994–REVISED JANUARY 2006

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Electrical Characteristics

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

High-level output voltage

See Figure 1

6

7.5

V

See Figure 1

–7.5

–6

V

High-level input current

See Figure 2

10

μA

Low-level input current

See Figure 2

–1.6

mA

See Figure 1

–4.5

–12

–19.5

mA

See Figure 1

4.5

12

19.5

mA

300

Ω

(1) The algebraic convention, in which the more positive (less negative) limit is designated as maximum, is used in this data sheet for logic

levels only (e.g., if –10 V is 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 TIA/EIA-232-F and as listed above.

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

Propagation delay time, low- to high-level output

315

500

ns

Propagation delay time, high- to low-level output

75

175

ns

60

100

ns

Transition time, low- to high-level output

1.7

2.5

μs

4075ns

Transition time, high- to low-level output

1.5

2.5

μs

(1) Measured between –3-V and 3-V points of the output waveform (TIA/EIA-232-F conditions); all unused inputs are tied either high or low.

(2) Measured between 3-V and –3-V points of the output waveform (TIA/EIA-232-F conditions); all unused inputs are tied either high or low.

6