Date: 03-04-05

Programmable Dual RS-232/RS-485 Transceiver

© Copyright 2005 Sipex Corporation

2

ELECTRICAL CHARACTERISTICS

Typically 25°C @ Vcc = +5V unless otherwise noted.

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

+15

Volts

R

LOW Level Output

–15.0

–5.0

Volts

R

Open Circuit Voltage

–15

+15

Volts

Short Circuit Current

±100

mA

V

Power Off Impedance

300

Ω

V

AC Characteristics

Slew Rate

30

V/µsR

V

Transition Time

1.5

µsR

between ±3V, T

Maximum Data Rate

120

235

kbps

R

Propagation Delay

t

PHL

28

µs

Measured from 1.5V of V

IN

t

PLH

28

µs

to 50% of V

RS-232 RECEIVER

DC Characteristics

HIGH Threshold

1.7

3.0

Volts

LOW Threshold

0.8

1.2

Volts

Receiver Open Circuit Bias

+2.0

Volts

Input Impedance

3

5

7

kΩ

V

AC Characteristics

Maximum Data Rate

120

235

kbps

Propagation Delay

t

PHL

0.25

1

µs

Measured from 50% of V

IN

t

PLH

0.25

1

µs

to 1.5V of V

RS-485 DRIVER

DC Characteristics

Open Circuit Voltage

6.0

Volts

Differential Output

1.5

5.0

Volts

R

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

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

Power Dissipation

28-pin Plastic DIP...........................1000mW

28-pin Plastic SOIC.......................1000mW

Package Derating:

28-pin Plastic DIP

ø

28-pin Plastic SOIC

ø

ABSOLUTE MAXIMUM RATINGS