SN75185DW datasheet(6/21 Pages) TI

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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

over recommended operating free-air temperature range, VDD = 9 V, VSS =–9V,VCC = 5 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

VOH

High-level output voltage

VIL = 0.8 V,

RL =3kΩ,

See Figure 1

7.5

VOL

Low-level output voltage(1)

VIH = 1.9 V,

RL =3kΩ,

See Figure 1

–7.5

–6

IIH

High-level input current

VI = 5 V,

See Figure 2

μA

IIL

Low-level input current

VI = 0,

See Figure 2

–1.6

IOS(H) High-level short-circuit output current(2)

VIL = 0.8 V,

VO = 0,

See Figure 1

–4.5

–12

–19.5

IOS(L) Low-level short-circuit output current

VIH = 2 V,

VO = 0,

See Figure 1

4.5

19.5

Output resistance(3)

VCC =VDD =VSS =0,

VO =–2Vto 2V

300

(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.

VCC = 5 V, VDD =12V,VSS = –12 V, TA =25°C (see Figure 3)

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

RL =3kΩ to 7 kΩ,CL = 15 pF

315

500

tPHL

Propagation delay time, high- to low-level output

RL =3kΩ to 7 kΩ,CL =15pF

175

CL =15pF

100

tTLH

Transition time, low- to high-level output

RL =3kΩ to 7 kΩ

CL = 2500 pF(1)

1.7

2.5

μs

CL = 15 pF

4075ns

tTHL

Transition time, high- to low-level output

RL =3kΩ to 7 kΩ

CL = 2500 pF(2)

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.

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