®
SP3203E
3V RS-232 Serial Transceiver with Logic
Selector and15kV ESD Protection
FEATURES
■
3 Driver/ 2 Receiver Architecture
■
Logic selector function (V
L
) sets TTL
input/output levels for mixed logic
systems
■
Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■
Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a
+2.7V power source
■
Minimum 250Kbps data rate under load
■
Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V
CC
Variations
■
Enhanced ESD Specifications:
+15KV Human Body Model
+15KV
IEC1000-4-2 Air Discharge
+8KV
IEC1000-4-2 Contact Discharge
■
Applications
■
Palmtops
■
Cell phone Data Cables
■
PDA's
C1+ 1
V+ 2
C
1
- 3
+
C
2
4
C
2
- 5
V-
T
1
IN
T
2
IN
6
7
8
SP3203E
20
SHUTDOWN
19 V
CC
18 GND
17 T
1
OUT
16 T
2
OUT
15 T
3
OUT
14 R
1
IN
13 R
2
IN
12
11
V
L
R
1
OUT
T
3
IN 9
R
2
OUT 10
Now Available in Lead Free Packaging
DESCRIPTION
The SP3203E provides a RS-232 transceiver solution for portable and hand-held applica-
tions such as palmtops, PDA's and cell phones. The SP3203E uses an internal high-
efficiency, charge-pump that requires only 0.1µF capacitors during 3.3V operation. This
charge pump and Sipex's driver architecture allow the SP3203E to deliver compliant RS-232
performance from a single power supply ranging from +3.0V to +5.5V.
The SP3203E is a 3-driver/2-receiver device, with a unique V
L
pin to program the TTL input
and output logic levels to allow interoperation in mixed-logic voltage systems such as PDA's
and cell phones. Receiver outputs will not exceed V
L
for V
OH
and transmitter input logic levels
are scaled by the magnitude of the V
L
input.
Date: 03/01/05
SP3203E, 3V RS232 Serial Transceiver with Logic Selector and 15kV ESD
© Copyright 2005 Sipex Corporation
1
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
..................................................................-0.3V to +6.0V
V
+
(NOTE 1)..................................................-0.3V to +7.0V
V
-
(NOTE 1)...................................................+0.3V to -7.0V
V
+
+ |V
-
| (NOTE 1).........................................................+13V
I
CC
(DC V
CC
or current)...........................................+100mA
Input Voltages
TxIN, SHUTDOWN = GND.........................-0.3V to V
L
+0.3V
RxIN...............................................................................+25V
Output Voltages
TxOUT.............................................................+13.2V
RxOUT..............................................-0.3V to (V
L
+ 0.3V)
Short-CircuitDuration
TxOUT................................................................Continuous
Storage Temperature...............................-65°C to +150°C
Power Dissipation per Packages
20-Pin TSSOP
(derate 7.0mW/°C above+70°C)............................560mW
NOTE 1:
V
+
and V
-
can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
ELECTRICAL CHARACTERISTICS
(V
CC
= V
L
= +3V to +5.5V, C1-C4 = 0.1µF, tested at +3.3V +10%, C1 = 0.047µF, C2-C4 = 0.33µF, tested at +5.0V +10%, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at V
CC
= V
L
+3.3V, T
A
= +25°C.)
PARAMETER
MIN.
TYP.
MAX.
UNITS
CONDITIONS
DC CHARACTERISTICS
(V
CC
= +3.3V or +5V, T
A
= +25
o
C)
Supply Current
Shutdown Supply Current
LOGIC INPUTS
0.8
Input Logic Threshold Low
0.6
2.4
2.0
Input Logic Threshold High
1.4
0.9
Transmitter Input Hystersis
Input Leakage Current
RECEIVER OUTPUTS
Output Leakage Currents
Output Voltage Low
V
L
-
Output Voltage High
0.6
0.1
V
L
-
V
I
OUT
= -1mA
±0.05
±1 0
0.4
µA
V
RxOUT, receivers disabled
I
OUT
= 1.6mA
0.5
±0.01
±1
V
µA
TxIN, Shutdown
V
TxIN, Shutdown
V
TxIN, Shutdown
V
L
= 2.5V
V
L
= 5.0V
V
L
= 3.3V
V
L
= 2.5V
V
L
= 1.8V
V
L
= 3.3V or 5.0V
0.3
1
1
10
mA
µA
Shutdown = V
CC
, no load
Shutdown = GND
Date: 03/30/05
SP3203E, 3V RS232 Serial Transceiver with Logic Selector and 15kV ESD
© Copyright 2005 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
(V
CC
= V
L
= +3V to +5.5V, C1-C4 = 0.1µF, tested at +3.3V +10%, C1 = 0.047µF, C2-C4 = 0.33µF, tested at +5.0V +10%, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at V
CC
= V
L
+3.3V, T
A
= +25°C.)
PARAMETER
RECEIVER INPUTS
Input Voltage Range
MIN.
TYP.
MAX.
UNITS
CONDITIONS
-2 5
0.8
1.5
+25
V
V
L
= 5.0V
V
L
= 2.5V or 3.3V
V
L
= 5.0V
V
L
= 2.5V or 3.3V
Input Threshold Low
0.6
1.2
1.8
Input Threshold High
1.5
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
ESD PROTECTION
±15
R
X
IN, T
X
OUT
ESD Protection
±15
±8
±5
300
±5. 4
10M
±60
±25
3
0.5
5
7
2.4
2.4
V
T
A
= +25
O
C
V
V
kΩ
T
A
= +25
O
C
T
A
= +25
O
C
V
Ω
mA
µA
All transmitter outputs loaded with 3 k
Ω
to GND.
T
A
= 25
O
C
V
CC
= V+ = V- = 0, transmitter output = ±2V
V
TxOUT
= 0
V
TxOUT
= ±12, transmitter disabled;
V
CC
= 0 or 3.0V to 5.5V
Human Body Model
kV
IEC 1000-4-2 Air Gap Discharg e
IEC 1000-4-2 Contact Discharg e
Date: 03/01/05
SP3203E, 3V RS232 Serial Transceiver with Logic Selector and 15kV ESD
© Copyright 2005 Sipex Corporation
3
ELECTRICAL CHARACTERISTICS
(V
CC
= V
L
= +3V to +5.5V, C1-C4 = 0.1µF, tested at +3.3V +10%, C1 = 0.047µF, C2-C4 = 0.33µF, tested at +5.0V +10%, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at V
CC
= V
L
+3.3V, T
A
= +25°C.)
PARAMETER
Maximum Data Rate
t
PHL
Receiver Propagation Delay
t
PLH
Receiver Output Enable Time
Receiver Output Disable Time
Time to Exit Shutdown
Transmitter Skew
I
t
PHL
-t
PLH
I
Receiver Skew
MIN.
250
TYP.
MAX.
UNITS
kbps
CONDITIONS
R
L
= 3k
Ω
,
C
L
= 1000pF,
one transmitter switching
Receiver input to receiver output
C
L
= 150pF
normal operation
normal operation
IV
TxOUT
I > 3.7V
(Note 2)
0.15
µs
0.15
200
200
100
100
50
ns
ns
µs
ns
ns
V
CC
= 3.3V
T
A
= +25
o
C
R
L
= 3k
Ω
to 7k
Ω
,
measured from +3V
to -3V or -3V to +3V
I
t
PHL
-t
PLH
I
6
30
V/
µs
30
C
L
= 150pF to 1000pF
C
L
= 150pF to 2500pF
Transition-Region Slew Rate
4
Note 2. Transmitter skew is measured at the transmitter zero crosspoint.
Date: 03/30/05
SP3203E, 3V RS232 Serial Transceiver with Logic Selector and 15kV ESD
© Copyright 2005 Sipex Corporation
4
NAME
FUNCTION
PIN
NUMBER
SP3203E
C1+
V+
C1-
C2+
C2-
V-
R
1
IN
R
2
IN
R
1
OUT
R
2
OUT
T
1
IN
T
2
IN
T
3
IN
T
1
OUT
T
2
OUT
T
3
OUT
GND
V
CC
SHUTDOWN
V
L
Positive terminal of the symmetrical charge-pump capacitor, C1.
Regulated +5.5V output generated by the charge pump.
Negative terminal of the symmetrical charge-pump capacitor, C1.
Positive terminal of the symmetrical charge-pump capacitor, C2.
Negative terminal of the symmetrical charge-pump capacitor, C2.
Regulated -5.5V output generated by the charge pump.
RS-232 receiver input.
RS-232 receiver input.
TTL/CMOS receiver output.
TTL/CMOS receiver output.
TTL/CMOS driver input.
TTL/CMOS driver input.
TTL/CMOS driver input.
RS-232 driver output.
RS-232 driver output.
RS-232 driver output.
Ground.
+3.0V to +5.5V supply voltage.
Apply logic LOW to shut down drivers and charge pump.
Logic-Level Supply Voltage Selection
1
2
3
4
5
6
14
13
11
10
7
8
9
17
16
15
18
19
20
12
Date: 03/01/05
SP3203E, 3V RS232 Serial Transceiver with Logic Selector and 15kV ESD
© Copyright 2005 Sipex Corporation
5
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