®
SP3222EH/3232EH
3.3V, 460 Kbps RS-232 Transceivers
FEATURES
■Meets
true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■Interoperable
with RS-232 down to +2.7V
power source
■1
µA
Low-Power Shutdown with Receivers
Active (SP3222EH)
■Enhanced
ESD Specifications:
+15kV
Human Body Model
+15kV
IEC1000-4-2 Air Discharge
+8kV
IEC1000-4-2 Contact Discharge
■460Kbps
Minimum Transmission Rate
■Ideal
for Handheld, Battery Operated
Applications
C1+ 1
V+ 2
C1-
C2+
C2-
V-
T2OUT
R2IN
3
4
5
6
7
8
16 V
CC
15 GND
14 T1OUT
SP3232EH 13 R1IN
12 R1OUT
11 T1IN
10
9
T2IN
R2OUT
Now Available in Lead Free Packaging
DESCRIPTION
The
SP3222EH
and the
3232EH
are 2 driver/2 receiver RS-232 transceiver solutions
intended for portable or hand-held applications such as notebook or palmtop computers.
Their data transmission rate of 460Kbps meeting the demands of high speed RS-232
applications. Both ICS have a high-efficiency, charge-pump power supply that requires only
0.1µF capacitors for 3.3V operation. The charge pump allows the
SP3222EH
and the
3232EH
series to deliver true RS-232 performance from a single power supply ranging from +3.3V
to +5.0V. The ESD tolerance of the
SP3222EH/3232EH
devices exceeds
+15kV
for both
Human Body Model and IEC1000-4-2 Air discharge test methods.
The
SP3222EH
device has a low-power shutdown mode where the devices' driver outputs
and charge pumps are disabled. During shutdown, the supply current is less than 1µA.
SELECTION TABLE
MODEL
SP3222EH
SP3232EH
Power Supplies
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
2
RS-232
Receivers
2
2
External
Components
4
4
Shutdown
Yes
No
TTL
3-State
Yes
No
No. of
Pins
18, 20
16
Date: 1/18/06
SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
© Copyright 2006 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 GND current).................................
+100mA
Electrostatic Discharge
HBM ......................................................................15kV
IEC1000-4-2-AirDischarge....................................15kV
IEC1000-4-2 Direct Contact....................................8kV
Input Voltages
TxIN, EN .....................................................-0.3V to +6.0V
RxIN.............................................................................±25V
Output Voltages
TxOUT.....................................................................±13.2V
RxOUT..............................................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration
TxOUT...............................................................Continuous
Storage Temperature.................................-65°C to +150°C
Power Dissipation Per Package
20-pin SSOP (derate 9.25mW/
o
C above +70
o
C).......750mW
18-pin PDIP (derate 15.2mW/
o
C above +70
o
C)......1220mW
18-pin SOIC (derate 15.7mW/
o
C above +70
o
C)......1260mW
20-pin TSSOP (derate 11.1mW/
o
C above +70
o
C).....890mW
16-pin SSOP (derate 9.69mW/
o
C above +70
o
C).......775mW
16-pin PDIP (derate 14.3mW/
o
C above +70
o
C)......1150mW
16-pin Wide SOIC (derate 11.2mW/
o
C above +70
o
C)....900mW
16-pin TSSOP (derate 10.5mW/
o
C above +70
o
C).....850mW
NOTE 1:
V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
ELECTRICAL CHARACTERISTICS
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +5.0V with T
AMB
= T
MIN
to T
MAX
PARAMETER
DC CHARACTERISTICS
Supply Current
Shutdown Supply Current
0.3
1.0
1.0
10
mA
µA
no load, T
AMB
= +25°C,
V
CC
= +3.3V, TxIN = V
CC
or GND
SHDN=GND, T
AMB
= +25
°C,
V
CC
=+3.3V, TxIN=V
CC
or GND
TxIN, EN, SHDN, Note 2
V
CC
=3.3V, Note 2
V
CC
=5.0V, Note 2
TxIN, EN, SHDN, T
AMB
= +25°C
receivers disabled
I
OUT
=1.6mA
I
OUT
=-1.0mA
3kΩload to ground at all driver outputs,
T
AMB
=+25°C
V
CC
= V+ = V- = 0V, T
OUT
=
±2V
V
OUT
= 0V
V
OUT
=
±12V,
V
CC
= 0V or 3.0V+5.5V,
drivers disabled
MIN
TYP
MAX
UNITS
CONDITIONS
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold LOW
Input Logic Threshold HIGH
Input Leakage Current
Output Leakage Current
Output Voltage LOW
Output Voltage HIGH
DRIVER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
±5.0
300
±35
±60
±25
±5.4
V
Ω
mA
µA
V
CC
-0.6
V
CC
-0.1
2.0
2.4
±0.01
±0.05
±1.0
±10
0.4
0.8
V
V
µA
µA
V
V
Date: 1/18/06
SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
© Copyright 2006 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +5.0V with T
AMB
= T
MIN
to T
MAX
.
PA R AM E T E R
R E C EIV E R I N P U T S
Input Voltage Range
Input Threshold LOW
Input Threshold HIGH
Input Hysteresis
Input Resistance
TIMING CHARACTERISTICS
Maximum Data Rate
Driver Propagation Delay
Receiver Propagation Delay
Receiver Output Enable Time
Receiver Output Disable Time
Driver Skew
Receiver Skew
Transition-Region Slew Rate
460
1. 0
1.0
0.3
0.3
200
200
100
200
60
500
1000
Kbps
µs
µs
µs
ns
ns
ns
ns
V/
µs
| t
PH L
- t
PL H
|
| t
PH L
- t
PL H
|
V
CC
= 3.3V, R
L
= 3K
Ω
, T
AMB
= 25
o
C,
measurements taken from -3.0V to +3.0V
o r + 3. 0 V t o - 3 . 0 V
R
L
=3k
Ω
, C
L
=1000pF, one driver switching
t
PHL
, R
L
= 3K
Ω
, C
L
= 1000pF
t
PLH
, R
L
= 3K
Ω
, C
L
= 1000pF
t
PHL
, RxIN to RxOUT, C
L
=150pF
t
PLH
, RxIN to RxOUT, C
L
=150pF
3
-15
0. 6
0.8
1.2
1.5
1.5
1.8
0.3
5
7
2.4
2.4
+15
V
V
V
V
kΩ
V
CC
=3.3V
V
CC
=5.0V
V
CC
=3.3V
V
CC
=5.0V
MIN.
TYP.
MAX.
UNITS
CONDITIONS
Date: 1/18/06
SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
© Copyright 2006 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 460Kbps data rates, all drivers
loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25
°C.
6
14
12
10
Slew Rate [V/µs]
Transmitter Output Voltage [V]
4
2
0
0
-2
-4
500
1000
1500
2000
Vout+
Vout-
8
6
4
2
+Slew
-Slew
-6
Load Capacitance [pF]
0
0
500
1000
1500
Load Capacitance [pF]
2000
2330
Figure 1. Transmitter Output Voltage VS. Load
Capacitance for the SP3222EH and the SP3232EH
Figure 2. Slew Rate VS. Load Capacitance for the
SP3222EH and the SP3232EH
40
35
Supply Current (mA)
30
25
20
15
10
5
0
0
500
1000
1500
2000 2500
3000
460Kbps
120Kbps
20Kbps
Load Capacitance (pF)
Figure 3. Supply Current VS. Load Capacitance when
Transmitting Data for the SP3222EH and the SP3232EH
Date: 1/18/06
SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
© Copyright 2006 Sipex Corporation
4
PIN DESCRIPTION
PIN NUMBER
NAME
FUNCTION
S P 3222 E H
DIP/SO
EN
C1+
V+
C1-
C2+
C2-
V-
T1OUT
T2OUT
R1IN
R2IN
R1OUT
R2OUT
T1IN
T2IN
GND
V
CC
SHDN
NC
Receiver Enable. Apply logic LOW for normal operation.
Apply Logic HIGH to disable the receiver outputs (high-Z state).
Positive terminal of the voltage doubler charge-pump capacitor.
+5.5V 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.
-5.5V generated by the charge pump.
RS-232 driver output.
RS-232 driver output.
RS-232 receiver input.
RS-232 receiver input.
TTL/CMOS receiver output.
TTL/CMOS receiver output.
TTL/CMOS driver input.
TTL/CMOS driver input.
Ground.
+3.0V to +5.5V supply voltage
Shutdown Control Input. Drive HIGH for normal device operation.
Drive LOW to shutdown the drivers (high-Z output) and the
on-board power supply.
No Connect.
1
2
3
4
5
6
7
15
8
14
9
13
10
12
11
16
17
18
-
SSOP/-
TS S O P
1
2
3
4
5
6
7
17
8
16
9
15
10
13
12
18
19
20
11, 14
S P 3232 E H
-
1
2
3
4
5
6
14
7
13
8
12
9
11
10
15
16
-
-
Table 1. Device Pin Description
Date: 1/18/06
SP3222EH/3232EH 3.3V, 460 Kbps RS-232 Transceivers
© Copyright 2006 Sipex Corporation
5
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