2
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
CC................................................................... +6.0V
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
CC +0.3V)
Short-Circuit Duration
TxOUT....................................................Continuous
Storage Temperature......................-65°C to +150°C
V
CC = +3.3V +10%; cap on (V+) and (V-) = 1.0F, C1 = C2 = 0.1F; TMIN to TMAX unless otherwise noted.
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
A
T
IN = 0V
Maximum Data Rate
120
kbps
C
L = 2500pF, RL = 3k
TTL OUTPUT
TTL/CMOS Output
Voltage LOW
0.5
V
I
OUT = 3.2mA, Vcc = 3.3V
TTL/CMOS Output
Voltage HIGH
2.4
V
I
OUT = -1.0mA
Leakage Current
+0.05
+10
A
ON/OFF = 0V, 0V ≤ V
OUT ≤ Vcc,
T
A = 25°C
EIA-562 OUTPUT
Output Voltage Swing
+3.7
+4.2
V
All transmitter outputs loaded with
3k 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)