Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com

SP232A_00_05308

2

AbSoLUTE MAxiMUM RATingS

These are stress ratings only and functional opera-

tion of the device at these ratings or any other above

those indicated in the operation sections of the speci-

fications below are not implied. Exposure to absolute

maximum ratings conditions for extended periods of

time may affect reliability.

V+........................................................................... (Vcc-0.3V) to +.0V

V- .............................................................................-.0V

Input Voltages

Tin.....................................................-0.3V to (Vcc + 0.3V)

Rin............................................................................+/-5V

Output Voltages

Tout...............................................(V+, +0.3V) to (V-, -0.3V

Rout...................................................-0.3V to (Vcc + 0.3V)

Vcc=5V ±0%, 0.

, unless otherwise noted, Typical values are Vcc=5V

=25°C

Short Circuit duration

Tout.....................................................Continuous

Package Power Dissipation:

Plastic DIP...............................................375mW

(derate 7mW/°C above +70°C)

Small Outline...........................................375mW

(derate 7mW/°C above +70°C)

Storage Temperature..................-65°C to +50°C

Lead Temperature (soldering, 0s).......... +300°C

ELECTRiCAL CHARACTERiSTiCS

PARAMETER

TEST ConDiTionS

Min

TYP

MAx

UniT

TTL inPUT

Logic Threshold LOW

T

in

0.8

Volts

Logic Threshold HIGH

Tin

2.0

Volts

Logic Pull-Up Current

Tin = 0V

5

200

μA

TTL oUTPUT

Output Voltge LOW

0.4

Volts

Output Voltage HIGH

3.5

Volts

RS-232 oUTPUT

output Voltage Swing

all Transmitter outputs loaded

with 3k ohms to GND

+/-5.0

+/-6.5V

Volts

Output Resistance

Vcc = 0V, Vout = +/-2V

300

Ohms

Output Short Circuit Current

Infinite Duration

+/-8

mA

Maximum Data Rate

CL = 2500pF, RL = 3kΩ

20

240

kbps

RS-232 inPUT

Voltage Range

-5

+5

Volts

Voltage Threshold LOW

Vcc = 5V,

=25°C

0.8

.2

Volts

Voltage Threshold HIGH

Vcc = 5V,

=25°C

.7

2.4

Volts

Hysteresis

Vcc = 5V,

=25°C

0.2

0.5

.0

Volts

Resistance

3

5

7

kΩ