GD75323

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS213A – JANUARY 1996 – REVISED JUNE 1999

6

POST OFFICE BOX 655303

RECEIVER SECTION

electrical characteristics over recommended operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT

Positive going input threshold voltage

See Figure 5

TA = 25°C

1.75

1.9

2.3

VIT+

Positive-going input threshold voltage

See Figure 5

TA = 0°C to 70 °C

1.55

2.3

V

VIT–

Negative-going input threshold voltage

See Figure 5

0.75

0.97

1.25

V

Vhys

Input hysteresis voltage (VIT+ – VIT–)

See Figure 5

0.5

VOH

High level output voltage

IOH =0 5 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 output 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

8.3

mA

IIH

High-level input current

VI = 3 V,

See Figure 5

0.43

mA

IIL

Low level input current

VI = – 25 V,

See Figure 5

– 3.6

– 8.3

mA

IIL

Low-level input 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

500

ns

tPHL

Propagation delay time, high- to low-level output

CL = 50 pF,

RL = 5 kΩ,

42

150

ns

tTLH

Transition time, low- to high-level output

L

See Figure 6

L

175

525

ns

tTHL

Transition time, high- to low-level output

16

60

ns

PARAMETER MEASUREMENT INFORMATION

Figure 1. Driver Test Circuit

IOS(L)

–IOS(H)

VSS

VDD

VCC

VI

VO

VDD or GND

VSS or GND

RL = 3 kΩ

–IIL

IIH

VSS

VDD

VCC

VI

VI