SN752232

DUAL RS-232 PORT

SLLS507 – JUNE 2001

5

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time,

low- to high-level output

RL = 3 kΩ to 7 kΩ,

CL = 15 pF

315

500

ns

tPHL

Propagation delay time,

high- to low-level output

RL = 3 kΩ to 7 kΩ,

CL = 15 pF

75

175

ns

tTLH

Transition time low to high level output

RL =3kΩ to7kΩ

CL = 15 pF

60

100

ns

tTLH

Transition time, low- to high-level output

RL = 3 kΩ to 7 kΩ

CL = 2500 pF,

See Note 6

1.7

2.5

µs

tTHL

Transition time high to low level output

RL =3kΩ to7kΩ

CL = 15 pF

40

75

ns

tTHL

Transition time, high- to low-level output

RL = 3 kΩ to 7 kΩ

CL = 2500 pF,

See Note 6

1.5

2.5

µs

NOTE 6: 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.

RECEIVER SECTION

electrical characteristics over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT

Positive going input threshold voltage

TA = 25°C

See Figure 5

1.75

1.9

2.3

V

VIT+

Positive-going input threshold voltage

TA = 0°C to 70 °C

See Figure 5

1.55

2.3

V

VIT–

Negative-going input threshold voltage

0.75

0.97

1.25

V

Vhys

Input hysteresis voltage (VIT+ – VIT–)

0.5

V

VOH

High level output voltage

IOH = 05 mA

VIH = 0.75 V

2.6

4

5

V

VOH

High-level output voltage

IOH = –0.5 mA

Inputs open

2.6

V

VOL

Low-level input voltage

IOL = 10 mA,

VI = 3 V

0.2

0.45

V

IIH

High level input current

VI = 25 V,

See Figure 5

3.6

8.8

mA

IIH

High-level input current

VI = 3 V,

See Figure 5

0.43

mA

IIL

Low level output current

VI = –25 V,

See Figure 5

–3.6

–8.8

mA

IIL

Low-level output current

VI = –3 V,

See Figure 5

–0.43

mA

IOS

Short-circuit output current

See Figure 4

–3.4

–12

mA

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

107

250

ns

tPHL

Propagation delay time, high- to low-level output

CL =50 pF

RL =5kΩ

42

150

ns

tTLH

Transition time, low- to high-level output

CL = 50 pF,

RL = 5 kΩ

175

350

ns

tTHL

Transition time, high- to low-level output

16

60

ns

tPLH

Propagation delay time, low- to high-level output

100

160

ns

tPHL

Propagation delay time, high- to low-level output

CL =15 pF

RL =15kΩ

60

100

ns

tTLH

Transition time, low- to high-level output

CL = 15 pF,

RL = 1.5 kΩ

90

175

ns

tTHL

Transition time, high- to low-level output

15

50

ns