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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP385E_100_030811

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 and cause permanent damage to the

device.

V

V+ .............................................(Vcc-0.3V) to +13.2V

V- .................................................................... -13.2V

Input Voltages

TxIN, .......................................-0.3V to (Vcc + 0.3V)

RxIN...................................................................+15V

Output Voltages

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

RxOUT........................................-0.3V to (V

Short-Circuit Duration

TxOUT....................................................Continuous

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

V

ELECTRICAL CHARACTERISTICS

PARAMETER

MIN.

TyP.

MAX. UNITS CONDITIONS

TTL INPUT

Input Logic Threshold LOW

0.8

V

TxIN, ON/OFF, Vcc = 3.3V

Input Logic Threshold HIGH

2.0

V

TxIN, ON/OFF, Vcc = 3.3V

Logic Pullup Current

15

200

µA

T

Maximum Data Rate

120

kbps

C

TTL OUTPUT

TTL/CMOS Output

Voltage LOW

0.5

V

I

TTL/CMOS Output

Voltage HIGH

2.4

V

I

Leakage Current

+0.05

+10

µA

ON/OFF = 0V, 0V ≤ V

T

EIA-562 OUTPUT

Output Voltage Swing

+3.7

+4.2

V

All transmitter outputs loaded with

3kΩ to GND

Power Dissipation

20-pin SSOP ..................................................750mW

(derate 9.25mW/°C above +70 °C)

18-pin Wide SOIC.........................................1260mW

(derate 15.7mW/°C above +70 °C)