SN75185DW datasheet(7/21 Pages) TI

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RECEIVER 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 conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX UNIT

TA =25°C

1.75

1.9

2.3

VT+

Positive-going threshold voltage

See Figure 5

TA =0°Cto70°C

1.55

2.3

VT–

Negative-going threshold voltage

0.75

0.97

1.25

Vhys

Input hysteresis (VT+ –VT–)

0.5

VIH =0.75V

2.6

VOH

High-level output voltage

IOH = –0.5 mA

Inputs open

2.6

VOL

Low-level input voltage

IOL = 10 mA,

VI = 3 V

0.2

0.45

VI = 25 V,

See Figure 5

3.6

8.3

IIH

High-level input current

VI = 3 V,

See Figure 5

0.43

VI = –25 V,

See Figure 5

–3.6

–8.3

IIL

Low-level output current

VI = –3 V,

See Figure 5

–0.43

IOS

Short-circuit output current

See Figure 4

–3.4

–12

(1) All typical values are at TA =25°C, VCC = 5 V, VDD = 9 V, and VSS =–9V.

VCC = 5 V, VDD =12V,VSS = -12 V, TA =25°C (see Figure 6)

PARAMETER

TEST CONDITIONS

MIN

TYP MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

CL =50pF,

RL =5kΩ

107

500

tPHL

Propagation delay time, high- to low-level output

CL =50pF,

RL =5kΩ

150

tTLH

Transition time, low- to high-level output

CL =50pF,

RL =5kΩ

175

525

tTHL

Transition time, high- to low-level output

CL =50pF,

RL =5kΩ

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