®
SP230A/234A/235A/236A/237A/238A/239A/241A
SP235B/236B/240A/240B/241A/241B
+5V Powered Multi-Channel RS-232 Drivers/Receivers
s
Operates from Single +5V Power Supply
(+5V and +12V – SP239A)
s
Meets All RS-232D and V.28 Specifications
s
±9V
Output Swing with +5V Supply
s
Improved Driver Output Capacity for
Mouse Applications
s
Low Power Shutdown – 1µA
s
WakeUp Feature in Shutdown Mode
s
3–State TTL/CMOS Receiver Outputs
s
±30V
Receiver Input Levels
s
Low Power CMOS – 5mA Operation
s
Wide Charge Pump Capacitor Value
Range – 1-10µF
DESCRIPTION…
The
SP230A
Series are multi–channel RS-232 line drivers/receivers that provide a variety of
configurations to fit most communication needs, especially where
±12V
is not available. Some models
feature a shutdown mode to conserve power in battery-powered systems. Some require no external
components. All, except one model, feature a built-in charge pump voltage converter, allowing them
to operate from a single +5V power supply. All drivers and receivers meet all EIA RS-232D and CCITT
V.28 requirements. The Series is available in plastic and ceramic DIP and SOIC packages.
SELECTION TABLE
Model
SP230A
SP234A
SP235A
SP235B
SP236A
SP236B
SP237A
SP238A
SP239A
SP240A
SP240B
SP241A
SP241B
No. of
Power
RS-232
Supplies
Drivers
+5V
5
+5V
4
+5V
5
+5V
5
+5V
4
+5V
4
+5V
5
+5V
4
+5V/+8.5 to +13.2V
3
+5V
5
+5V
5
+5V
4
+5V
4
No. of
RS-232
Rcvrs
0
0
5
5
3
3
3
4
5
5
5
5
5
External
Low Power TTL Wake- No. of
Components Shutdown 3–State Up
Pins
4 Capacitors
Yes
No
No
20
4 Capacitors
No
No
No
16
None
Yes
Yes
No
24
None
Yes
Yes
Yes
24
4 Capacitors
Yes
Yes
No
24
4 Capacitors
Yes
Yes
Yes
24
4 Capacitors
No
No
No
24
4 Capacitors
No
No
No
24
2 Capacitors
No
Yes
No
24
4 Capacitors
Yes
Yes
No
44
4 Capacitors
Yes
Yes
Yes
44
4 Capacitors
Yes
Yes
No
28
4 Capacitors
Yes
Yes
Yes
28
SP30A/234A/235A/236A/237A/238A/239A/
SP241A/235B/236B/240A/240B/241A/241B
+5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2000 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
This is a stress rating only and functional operation of the device at
these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect
reliability.
V
CC ...............................................................................................................................................................
+6V
V
+ ...................................................................................................................
(Vcc–0.3V) to +13.2V
V
– .............................................................................................................................................................
13.2V
Input Voltages:
T
IN .......................................................................................................................
–0.3 to (Vcc +0.3V)
R
IN ............................................................................................................................................................
±30V
Output Voltages:
T
OUT .................................................................................................
(V+, +0.3V) to (V–, –0.3V)
R
OUT ..............................................................................................................
–0.3V to (Vcc +0.3V)
Short Circuit Duration:
T
OUT .........................................................................................................................................
Continuous
Power Dissipation:
CERDIP .............................................................................. 675mW
(derate 9.5mW/°C above +70°C)
Plastic DIP .......................................................................... 375mW
(derate 7mW/°C above +70°C)
Small Outline ...................................................................... 375mW
(derate 7mW/°C above +70°C)
SPECIFICATIONS
All units Vcc=+5V±10%; except SP235A/B, Vcc=+5V±5%; SP239A only, V+ = +8.5 to +13.2V; All specifications T
MIN
to T
MAX
unless otherwise noted.
PARAMETERS
POWER REQUIREMENTS
Vcc Power Supply Current
SP239A only
V+ Power Supply Current
SP239A only
Shutdown Supply Current
LOGIC INPUTS
Input Logic Threshold
Low
High
Logic Pullup Current
RS-232 INPUTS
RS-232 Input Voltage Range
RS-232 Input Threshold
Low
High
RS-232 Input Hysteresis
RS-232 Input Resistance
LOGIC OUTPUTS
Output Voltage
Low
High
Output Leakage Current
RS-232 OUTPUTS
Output Enable Time
Output Disable Time
Propagation Delay
Instantaneous Slew Rate
RS-232 OUTPUTS
Transition Region Slew Rate
Output Voltage Swing
MIN.
TYP.
5
0.4
8
1
MAX.
10
1.0
15
10
UNITS
mA
mA
mA
µA
CONDITIONS
No load, T
A
= +25°C
No load, V
+
= 12V
T
A
= +25°C
0.8
2.0
15
-30
0.8
0.2
3
1.2
1.7
0.5
5
200
+30
2.4
1.0
7
Volts
Volts
µA
Volts
Volts
Volts
Volts
kOhms
T
IN
; EN, SD
T
IN
; EN, SD
T
IN
= 0V
Vcc = 5V, T
A
= +25°C
Vcc = 5V, T
A
= +25°C
Vcc = 5V
T
A
= +25°C, -15V
≤
V
IN
≤
+15V
0.4
3.5
0.05
400
250
1.5
30
±10
Volts
Volts
µA
ns
ns
µs
V/µs
I
OUT
= 3.2mA
I
OUT
= 1.0mA
EN = V
CC
, 0V≤V
OUT
≤Vcc
SP235A/B, SP236A/B,
SP239A & SP241A/B
SP235A/B, SP236A/B,
SP239A & SP241A/B
RS232 to TTL
C
L
= 10pF, R
L
= 3–7kΩ;
T
A
= +25°C
C
L
= 2500pF, R
L
= 3kΩ;
measured from +3V to -3V or
-3V to +3V
All transmitter outputs loaded
with 3kΩ to Ground
V
CC
= 0V; V
OUT
=
±2V
Infinite duration
3
±5
±9
V/µs
Volts
Ohms
mA
Output Resistance
300
RS-232 Output Short Circuit Current
±10
SP30A/234A/235A/236A/237A/238A/239A/
SP241A/235B/236B/240A/240B/241A/241B
+5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2000 Sipex Corporation
2
Transmitter Output Waveforms
T
IN
5V
0V
T
IN
5V
0V
0V
0V
T
OUT
T
OUT
No load
R
L
= 3kΩ, C
L
= 2,500pF
Transmitter Propagation Delay
T
IN
T
IN
T
OUT
T
OUT
Rise Time
R
L
= 3kΩ; C
L
= 2,500pF
All inputs = 20kHz
Fall Time
R
L
= 3kΩ; C
L
= 2,500pF
Receiver Output Waveform
Shutdown to V+, V– Rise Time
SD
In
5V
0V
V
+
0V
Out
V
–
SP30A/234A/235A/236A/237A/238A/239A/
SP241A/235B/236B/240A/240B/241A/241B
+5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2000 Sipex Corporation
3
Receiver Propagation Delay
R
IN
R
IN
5V
0V
R
OUT
5V
0V
R
OUT
5V
0V
Fall Time
Rise Time
PINOUT
T
3
OUT
T
1
OUT
T
2
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
T
4
OUT
T
5
IN
NC
SD
T
5
OUT
T
4
IN
T
3
IN
V-
C
2
-
C
2
+
T
1
OUT
T
2
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
1
2
3
16
15
14
T
3
OUT
T
4
OUT
T
4
IN
T
3
IN
V-
C
2
-
C
2
+
C
1
-
T
4
OUT
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
1
2
3
4
5
24
23
22
21
20
R
3
IN
R
3
OUT
T
5
IN
SD
EN
T
5
OUT
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
SP234A
4
5
6
7
8
13
12
11
10
9
SP230A
1
2
3
4
5
SP235A
6
7
8
9
10
11
12
19
18
17
16
15
14
13
T
4
OUT
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
24
23
22
21
20
R
3
IN
R
3
OUT
T
5
IN
SD
EN
T
5
OUT
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
T
3
OUT
T
1
OUT
T
2
OUT
R
1
IN
R
1
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
24
23
22
21
20
T
4
OUT
R
2
IN
R
2
OUT
SD
EN
T
4
IN
T
3
IN
R
3
OUT
R
3
IN
V-
C
2
-
C
2
+
T
3
OUT
T
1
OUT
T
2
OUT
R
1
IN
R
1
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
24
23
22
21
20
T
4
OUT
R
2
IN
R
2
OUT
SD
EN
T
4
IN
T
3
IN
R
3
OUT
R
3
IN
V-
C
2
-
C
2
+
SP236B
SP235B
SP236A
6
7
8
9
10
11
12
19
18
17
16
15
14
13
6
7
8
9
10
11
12
19
18
17
16
15
14
13
6
7
8
9
10
11
12
19
18
17
16
15
14
13
SP30A/234A/235A/236A/237A/238A/239A/
SP241A/235B/236B/240A/240B/241A/241B
+5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2000 Sipex Corporation
4
Receiver Output Enable/Disable Times
5V
EN IN
0V
5V
EN IN
0V
5V
R
OUT
0V
Disable
5V
R
OUT
0V
Enable
PINOUT
T
3
OUT
T
1
OUT
T
2
OUT
R
1
IN
R
1
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
24
23
22
21
20
T
4
OUT
R
2
IN
R
2
OUT
T
5
IN
T
5
OUT
T
4
IN
T
3
IN
R
3
OUT
R
3
IN
V-
C
2
-
C
2
+
T
2
OUT
T
1
OUT
R
2
IN
R
2
OUT
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
24
23
22
21
20
T
3
OUT
R
3
IN
R
3
OUT
T
4
IN
T
4
OUT
T
3
IN
T
2
IN
R
4
OUT
R
4
IN
V-
C
2
-
C
2
+
R
1
OUT
R
1
1N
GND
V
CC
V+
C+
C-
V-
R
5
IN
R
5
OUT
R
4
OUT
R
4
IN
1
2
3
4
5
24
23
22
21
20
T
1
IN
T
2
IN
R
2
OUT
R
2
IN
T
2
OUT
T
1
OUT
R
3
IN
R
3
OUT
T
3
IN
No Connection
EN
T
3
OUT
SP239A
SP237A
SP238A
6
7
8
9
10
11
12
19
18
17
16
15
14
13
6
7
8
9
10
11
12
19
18
17
16
15
14
13
6
7
8
9
10
11
12
19
18
17
16
15
14
13
N.C.
SHUTDOWN
EN
T
5
OUT
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
N.C.
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
33
32
31
30
29
28
27
26
25
24
23
N.C.
N.C.
N.C.
V–
C
2
–
C
2
+
C
1
–
V+
C
1
+
N.C.
N.C.
1
2
3
4
5
6
28
27
26
25
24
23
T
4
OUT
R
3
IN
R
3
OUT
SHUTDOWN (SD)
EN
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
V-
C
2
-
C
2
+
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
-
1
2
3
4
5
6
28
27
26
25
24
23
T
4
OUT
R
3
IN
R
3
OUT
SHUTDOWN (SD)
EN
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
V-
C
2
-
C
2
+
44
43
42
41
40
39
38
37
36
35
34
N.C.
T
5
IN
R
3
OUT
R
3
IN
T
4
OUT
T
3
OUT
T
1
OUT
T
2
OUT
N.C.
R
2
IN
N.C.
1
2
3
4
5
6
7
8
9
10
11
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
-
SP241B
SP241B
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
SP240A/B
SP30A/234A/235A/236A/237A/238A/239A/
SP241A/235B/236B/240A/240B/241A/241B
N.C.
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
N.C.
N.C.
N.C.
12
13
14
15
16
17
18
19
20
21
22
+5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2000 Sipex Corporation
5
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