2

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

SP33_00_0260

SPECIFICATIONS

PARAMETER

MIN.

TYP.

MAX.

UNITS CONDITIONS

LOgIC INPUTS

V

IL

0.8

Volts

V

IH

2.0

Volts

LOgIC OUTPUTS

V

OL

0.4

Volts

I

V

OH

2.4

Volts

I

RS-232 DRIVER

DC Characteristics

HIGH Level Output

+5.0

+5.0

Volts

R

LOW Level Output

-5.0

-5.0

Volts

R

Open Circuit Voltage

-5

+5

Volts

Short Circuit Current

+/-00

mA

V

Power Off Impedance

300

Ω

V

AC Characteristics

Slew Rate

30

V/µs

R

T

Transistion Time

.5

µs

R

+/-3V, T

Maximum Data Rate

20

235

kbps

R

Propagation Delay t

PHL

2

8

µs

Measured from 1.5V of V

of V

Propagation Delay t

PLH

2

8

µs

RS-232 RECEIVER

DC Characteristics

HIGH Threshold

.7

3.0

Volts

LOW Threshold

0.8

.2

Volts

Receiver Open Circuit Bias

+2.0

Volts

Input Impedance

3

5

7

kΩ

V

ABSOLUTE MAXIMUM RATINgS

These are stress ratings only and functional operation

of the device at these ratings or any other above those

indicated in the operation sections of the specifications

below is not implied. Exposure to absolute maximum

rating conditions for extended periods of time may

affect reliability.

V

Input Voltages

Logic............................-0.5V to (Vcc+0.5V)

Drivers.........................-0.5V to (Vcc+0.5V)

Receivers......................+/-30V @ ≤100mA

Driver Outputs..................................................+/-5V

Maximum Data Rate..........................8Mbps (Note 1)

Storage Temperature.......................-65˚C to +150˚C

Power Dissipation

28-pin WSOIC...................................000mW

Package Derating:

28-pin WSOIC

ø

Limits are specified at T