®
SP202E/232E/233E/310E/312E
High-Performance RS-232
Line Drivers/Receivers
■
Operates from Single +5V Power Supply
■
Meets All RS-232D and ITU V.28
Specifications
■
Operates with 0.1µF to 10µF Capacitors
■
High Data Rate – 120Kbps Under Load
■
Low Power Shutdown
≤1µA
(Typical)
■
3-State TTL/CMOS Receiver Outputs
■
Low Power CMOS – 3mA Operation
■
Improved ESD Specifications:
±15kV
Human Body Model
±15kV
IEC1000-4-2 Air Discharge
±8kV
IEC1000-4-2 Contact Discharge
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T
2
OUT
R
2
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
GND
T
1
OUT
R
1
IN
R
1
OUT
T
1
IN
T
2
IN
R
2
OUT
Now Available in Lead Free Packaging
The
SP202E/232E/233E/310E/312E
devices are a family of line driver and receiver pairs that
meet the specifications of RS-232 and V.28 serial protocols with enhanced ESD performance.
The ESD tolerance has been improved on these devices to over
±15KV
for both Human Body
Model and IEC1000-4-2 Air Discharge Method. These devices are pin-to-pin compatible with
Sipex's
SP232A/233A/310A/312A devices as well as popular industry standards. As with the
initial versions, the
SP202E/232E/233E/310E/312E
devices feature at least 120Kbps data rate
under load, 0.1µF charge pump capacitors, and overall ruggedness for commercial applications.
This family also features
Sipex's
BiCMOS design allowing low power operation without
sacrificing performance. The series is available in plastic DIP and SOIC packages operating over
the commercial and industrial temperature ranges.
SELECTION TABLE
Number of RS232
Model Drivers
Receivers
SP202E
2
2
SP232E
2
2
SP233E
SP310E
SP312E
2
2
2
2
2
2
No. of Receivers
No. of External
Active in Shutdown 0.1µF Capacitors
0
4
0
4
0
0
2
0
4
4
Shutdown WakeUp TTL Tri–State
No
No
No
No
No
No
No
Yes
Yes
No
No
Yes
No
Yes
Yes
SP202E
DESCRIPTION
Date: 7/19/04
SP202E Series High Performance RS232 Transceivers
© Copyright 2004 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 +11.0V
V
- ............................................................................................................................................................
-11.0V
Input Voltages
T
IN .........................................................................................................................
-0.3 to (Vcc +0.3V)
R
IN ............................................................................................................................................................
±15V
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
Plastic DIP .......................................................................... 375mW
(derate 7mW/°C above +70°C)
Small Outline ...................................................................... 375mW
(derate 7mW/°C above +70°C)
ELECTRICAL CHARACTERISTICS
V
CC
=+5V±10%; 0.1µF charge pump capacitors; T
MIN
to T
MAX
unless otherwise noted.
PARAMETERS
TTL INPUT
Logic Threshold
LOW
HIGH
Logic Pull-Up Current
TTL OUTPUT
TTL/CMOS Output
Voltage, Low
Voltage, High
Leakage Current **; T
A
= +25°
RS-232 OUTPUT
Output Voltage Swing
Output Resistance
Output Short Circuit Current
Maximum Data Rate
RS-232 INPUT
Voltage Range
Voltage Threshold
LOW
HIGH
Hysteresis
Resistance
MIN.
TYP.
MAX.
UNITS
CONDITIONS
0.8
2.0
15
200
Volts
Volts
µA
T
IN
; EN, SD
T
IN
; EN, SD
T
IN
= 0V
0.4
3.5
0.05
±5
300
120
-15
0.8
0.2
3
1.2
1.7
0.5
5
±18
240
+15
2.8
1.0
7
±6
±10
Volts
Volts
µA
Volts
Ohms
mA
Kbps
Volts
Volts
Volts
Volts
kΩ
I
OUT
= 3.2mA; Vcc = +5V
I
OUT
= -1.0mA
EN = V
CC
, 0V≤V
OUT
≤V
CC
All transmitter outputs loaded
with 3kΩ to Ground
V
CC
= 0V; V
OUT
=
±2V
Infinite duration
C
L
= 2500pF, R
L
= 3kΩ
V
CC
= 5V, T
A
= +25°C
V
CC
= 5V, T
A
= +25°C
V
CC
= 5V, T
A
= +25°C
T
A
= +25°C, -15V
≤
V
IN
≤
+15V
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
Transition Region Slew Rate
Output Enable Time **
Output Disable Time **
POWER REQUIREMENTS
V
CC
Power Supply Current
Shutdown Supply Current **
**SP310E and
SP312E
only
1.5
0.1
10
400
250
3
15
1
3.0
1.0
30
µs
µs
V/µs
V/µs
ns
ns
TTL to RS-232; C
L
= 50pF
RS-232 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
SP310E and SP312E only
SP310E and SP312E only
No load, T
A
= +25°C; V
CC
= 5V
All transmitters R
L
= 3kΩ;
T
A
= +25°C
V
CC
= 5V, T
A
= +25°C
5
5
mA
mA
µA
Date: 7/19/04
SP202E Series High Performance RS232 Transceivers
© Copyright 2004 Sipex Corporation
2
PERFORMANCE CURVES
-11
-10
10
8.5
12
30
9.0
-9
V– Voltage (Volts)
-8
-7
-6
-5
-4
-3
V
CC
= 6V
V+ (Volts)
8
6
V
CC
= 6V
V
CC
= 5V
25
20
I
CC
(mA)
V
CC
= 6V
V
OH
(Volts)
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.75
5.0
V
CC
(Volts)
5.25
5.5
Load current = 0mA
T
A
= 25°C
V
CC
= 5V
V
CC
= 4V
15
V
CC
= 5V
10
V
CC
= 4V
5
V
CC
= 3V
V
CC
= 4V
4
2
0
0
2
4
6
8
10
12
14
0
5
10
15
20
25
30
35
40
Load Current (mA)
0
-55
-40
0
25
70
85
125
Load Current (mA)
Temperature (°C)
PINOUTS
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T
2
OUT
R
2
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
GND
T
1
OUT
R
1
IN
R
1
OUT
T
1
IN
T
2
IN
R
2
OUT
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T
2
OUT
R
2
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
GND
T
1
OUT
R
1
IN
R
1
OUT
T
1
IN
T
2
IN
R
2
OUT
SP202E
SP232E
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
T
1
OUT
GND
V
CC
V+
GND
1
2
3
20
19
18
R
2
OUT
R
2
IN
T
2
OUT
V-
C
2
-
C
2
+
C
1
–
C
1
+
C
2
+
C
2
–
N.C./EN
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
1
2
20
19
SHDN
V
CC
GND
SP310E_A/312E_A
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
SP233ECT
4
5
6
7
8
9
17
16
15
14
13
12
11
T1OUT
R1IN
R1OUT
N.C.
T1IN
T2IN
N.C.
V–
10
20-PIN SOIC
R2OUT
10
20-PIN SSOP
NC
*
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T
2
OUT
R
2
IN
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
ON/OFF
V
CC
GND
T
1
OUT
R
1
IN
R
1
OUT
T
1
IN
T
2
IN
R
2
OUT
EN
*
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T
2
OUT
R
2
IN
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
SHUTDOWN
V
CC
GND
T
1
OUT
R
1
IN
R
1
OUT
T
1
IN
T
2
IN
R
2
OUT
SP312E
SP310E
*
N.C. for SP310E_A, EN for SP312E_A
Date: 7/19/04
SP202E Series High Performance RS232 Transceivers
© Copyright 2004 Sipex Corporation
3
FEATURES…
The
SP202E/232E/233E/310E/312E
devices
are a family of line driver and receiver pairs that
meet the specifications of RS-232 and V.28
serial protocols with enhanced ESD perfor-
mance. The ESD tolerance has been improved
on these devices to over
±15KV
for both Human
Body Model and IEC1000-4-2 Air Discharge
Method. These devices are pin-to-pin compat-
ible with
Sipex's
232A/233A/310A/312A
devices as well as popular industry standards.
As with the initial versions, the
SP202E/232E/
233E/310E/312E
devices feature10V/µs slew
rate, 120Kbps data rate under load, 0.1µF
charge pump capacitors, overall ruggedness
for commercial applications, and increased drive
current for longer and more flexible cable
configurations. This family also features
Sipex's
BiCMOS design allowing low power operation
without sacrificing performance.
The
SP202E/232E/233E/310E/312E
devices
have internal charge pump voltage converters
which allow them to operate from a single +5V
supply. The charge pumps will operate with
polarized or non-polarized capacitors ranging
from 0.1 to 10
µF
and will generate the
±6V
needed to generate the RS-232 output levels.
Both meet all EIA RS-232 and ITU V.28
specifications.
The
SP310E
provides identical features as the
SP232E
with a single control line which
simultaneously shuts down the internal DC/DC
converter and puts all transmitter and receiver
outputs into a high impedance state. The
SP312E
is identical to the
SP310E
with separate tri-state
and shutdown control lines.
THEORY OF OPERATION
The
SP232E, SP233E, SP310E
and
SP312E
devices are made up of three basic circuit blocks –
1) a driver/transmitter, 2) a receiver and 3) a charge
pump. Each block is described below.
Driver/Transmitter
The drivers are inverting transmitters, which ac-
cept TTL or CMOS inputs and output the RS-232
signals with an inverted sense relative to the input
logic levels. Typically the RS-232output voltage
swing is
±6V.
Even under worst case loading
conditions of 3kOhms and 2500pF, the output is
guaranteed to be
±5V,
which is consistent with the
RS-232 standard specifications. The transmitter
outputs are protected against infinite short-circuits
to ground without degradation in reliability.
+5V INPUT
10
µ
F 6.3V
+
1
0.1
µ
F
+
6.3V
3
4
16
C +
1
V
CC
V+
0.1
µ
F 6.3V
2
+
C
1
-
*
Charge Pump
C +
2
0.1
µ
F
+
16V
5
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
V-
6
+
0.1
µ
F
16V
C
2
-
400k
Ω
T
1
IN
11
T
1
400k
Ω
14
T
1
OUT
T
2
IN
10
T
2
R
1
5k
Ω
7
T
2
OUT
R
1
OUT
R
1
IN
R
2
OUT
9
SP202E
SP232E
R
2
5k
Ω
8
R
2
IN
GND
15
*The negative terminal of the V+ storage capacitor can be tied
to either V
CC
or GND. Connecting the capacitor to V
CC
(+5V)
is recommended.
Figure 1. Typical Circuit using the SP202E or SP232E.
Date: 7/19/04
SP202E Series High Performance RS232 Transceivers
RS-232 INPUTS
12
13
RS-232 OUTPUTS
© Copyright 2004 Sipex Corporation
4
+5V INPUT
7
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
V
CC
T
1
IN
2
400k
Ω
T
1
T
2
5
T
1
OUT
T
2
IN
1
400k
Ω
18
T
2
OUT
RS-232 INPUTS
R
1
OUT
3
R
1
5k
Ω
4
R
1
IN
R
2
OUT
20
13
C +
1
14
C
1
-
10
17
8
R
2
5k
Ω
19
R
2
IN
Do not make
connection to
these pins
Internal
-10V Power
Supply
Internal
+10V Power
Supply
C +
12
2
V-
V-
V+
C
2
+
15
SP233ECT
GND
GND
6
9
C
2
-
C
2
-
11
16
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
OL
to V
OH
clearly meets the mono-
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
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.
RS-232 OUTPUTS
+5V INPUT
10
µ
F 6.3V
+5V INPUT
10
µ
F 6.3V
+
+
2
0.1
µ
F
+
6.3V
4
5
17
C +
1
V
CC
3
+
V+
0.1
µF
16V
C
1
-
C +
2
*
+
0.1
µF
16V
TTL/CMOS INPUTS
Charge Pump
V-
7
2
0.1
µ
F
+
6.3V
4
5
17
C +
1
V
CC
V+
0.1
µ
F
16V
3
+
C
1
-
C +
2
*
16V
Charge Pump
V-
7
0.1
µ
F
+
16V
6
0.1
µ
F
+
16V
6
+
0.1
µ
F
C
2
-
400k
Ω
C
2
-
400k
Ω
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
RS-232 OUTPUTS
T
1
IN
12
T
1
400k
Ω
15
T
1
OUT
T
1
IN
12
T
1
400k
Ω
15
T
1
OUT
T
2
IN
11
T
2
R
1
5k
Ω
8
T
2
OUT
T
2
IN
11
T
2
8
T
2
OUT
R
1
OUT
R
1
5k
Ω
R
1
IN
R
2
OUT
10
R
2
5k
Ω
9
R
2
IN
R
2
OUT
10
R
2
5k
Ω
9
R
2
IN
SP310E
GND
16
18
ON/OFF
EN
1
SP312E
GND
16
18
SHUTDOWN
*The negative terminal of the V+ storage capacitor can be tied
to either V
CC
or GND. Connecting the capacitor to V
CC
(+5V)
is recommended.
*The negative terminal of the V+ storage capacitor can be tied
to either V
CC
or GND. Connecting the capacitor to V
CC
(+5V)
is recommended.
Figure 3. Typical Circuits using the SP310E and SP312E
Date: 7/19/04
SP202E Series High Performance RS232 Transceivers
© Copyright 2004 Sipex Corporation
5
RS-232 INPUTS
R
1
OUT
R
1
IN
RS-232 INPUTS
13
14
TTL/CMOS OUTPUTS
13
14
RS-232 OUTPUTS
Analog electronics
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