SP310E Sipex, SP310E Datasheet - Page 5

• Manufacturer Part Number: SP310E
• Description: High-Performance RS-232 Line Drivers/Receivers
• Manufacturer: Sipex

Figure 2. Typical Circuits using the SP233ECP and SP233ECT
The instantaneous slew rate of the transmitter
output is internally limited to a maximum of 30V/
µs in order to meet the standards [EIA RS-232-D
2.1.7, Paragraph (5)]. However, the transition re-
gion slew rate of these enhanced products is typi-
cally 10V/µs. The smooth transition of the loaded
output from V
tonicity requirements of the standard [EIA
RS-232-D 2.1.7, Paragraphs (1) & (2)].
Receivers
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually
from a transmission line, where long cable lengths
Figure 3. Typical Circuits using the SP310E and SP312E
Date: 7/19/04
R OUT
R OUT
*The negative terminal of the V+ storage capacitor can be tied
1
2
to either V
is recommended.
T IN
T IN
0.1 F
0.1 F
1
2
6.3V
16V
µ
µ
OL
+
+
CC
12
11
13
10
2
4
5
6
to V
or GND. Connecting the capacitor to V
C +
C -
C +
C -
1
1
2
2
10 F 6.3V
µ
OH
400k Ω
400k Ω
Charge Pump
SP310E
+5V INPUT
GND
R
R
+
2
1
V
clearly meets the mono-
CC
16
17
T
T
1
2
5k Ω
5k Ω
V+
V-
15
14
18
3
7
8
9
0.1 µF
+
16V
SP202E Series High Performance RS232 Transceivers
+
CC
connection to
Do not make
+10V Power
(+5V)
-10V Power
0.1 µF
T OUT
T OUT
R IN
R IN
ON/OFF
these pins
R OUT
R OUT
16V
1
2
1
2
1
2
Internal
Internal
T IN
T IN
Supply
Supply
1
2
*
20
13 C +
14
10
17
2
1
3
8
C -
V-
V-
V+
1
1
400k Ω
400k Ω
GND
+5V INPUT
SP233ECT
6
R
R
1
2
5
V
CC
7
GND
T
T
1
2
5k Ω
5k Ω
and system interference can degrade the signal, the
inputs have a typical hysteresis margin of 500mV.
This ensures that the receiver is virtually immune
to noisy transmission lines.
The input thresholds are 0.8V minimum and 2.4V
maximum, again well within the ±3V RS-232
requirements. The receiver inputs are also pro-
tected against voltages up to ±15V. Should an
input be left unconnected, a 5KOhm pulldown
resistor to ground will commit the output of the
receiver to a high state.
9
C +
C +
C -
C -
2
2
2
2
12
15
11
16
18
19
5
4
T OUT
T OUT
R IN
R IN
1
2
1
2
R OUT
R OUT
*The negative terminal of the V+ storage capacitor can be tied
1
2
to either V
is recommended.
T IN
T IN
0.1 F
0.1 F
1
2
6.3V
EN
16V
µ
µ
+
+
CC
12
11
13
10
2
4
5
6
1
or GND. Connecting the capacitor to V
C +
C -
C +
C -
1
1
2
2
10 F 6.3V
µ
400k Ω
400k Ω
Charge Pump
+5V INPUT
SP312E
GND
R
R
© Copyright 2004 Sipex Corporation
+
1
2
V
CC
16
17
T
T
1
2
5k Ω
5k Ω
V+
V-
15
14
18
3
7
8
9
0.1 F
+
16V
µ
+
CC
0.1 F
(+5V)
16V
R IN
R IN
T OUT
T OUT
SHUTDOWN
µ
1
2
1
2
*