Vcc=5V ±0%, 0.
μ
F charge pump capacitors, T
min
to T
max
,
unless otherwise noted, Typical values are Vcc=5V
and T
a
=25°C
DYnAMiC CHARACTERiSTiCS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
TTL to RS_232; CL = 50pF
RS-232 to TTL,
CL = 10pF, RL = 3-7kΩ
CL = 2500pF, RL = 3kΩ;
Measured from +3V to -3V or
-3V to +3V
.5
0.
3.0
.0
30
μs
μs
V/ μs
V/ μs
ELECTRiCAL CHARACTERiSTiCS
Transition Region Slew Rate
0
PoWER REQUiREMEnTS
Vcc Power Supply Current
Vcc Power Supply Current, Loaded
No Load, Vcc = 5V, T
a
=25°C
All Transmitters RL = 3kΩ,
T
a
=25°C
.5
5
mA
mA
Pin ASSignMEnTS
Pin number Pin name
2
3
4
5
6
7
8
C+
V+
C-
C2+
C2-
V-
T2OUT
R2IN
R2OUT
T2IN
TIN
ROUT
RIN
TOUT
GND
Vcc
Pin Function
Positive terminal of the voltage doubler charge pump
capacitor
+6.5V generated by the charge pump
Negative terminal of the voltage doubler charge pump
capacitor
Positive terminal of the inverting charge pump capacitor
Negative terminal of the inverting charge pump capacitor
-6.7V generated by the charge pump
RS-232 driver output
RS-232 receiver input
TTL/CMOS receiver output
TTL/CMOS driver input
TTL/CMOS driver input
TTL/CMOS receiver output
RS-232 receiver input
RS-232 driver output
Ground
5V supply voltage
9
0
2
3
4
5
6
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com
SP232A_00_05308
3
EXAR [ EXAR CORPORATION ]
