STMICROELECTRONICS ST3232BWR

ST3232B
ST3232C
3 to 5.5 V, low power, up to 400 kbps
RS-232 drivers and receivers
Features
■
300 µA supply current
■
300 kbps minimum guaranteed data rate
■
6 V/µs minimum guaranteed slew rate
■
Meet EIA/TIA-232 specifications down to 3 V
■
Available in SO-16, SO-16 large and TSSOP16
SO-16
SO-16 Large
Description
The ST3232 is a 3 V powered EIA/TIA-232 and
V.28/V.24 communication interface with low power
requirements, high data-rate capabilities.
ST3232 has a proprietary low dropout transmitter
output stage providing true RS-232 performance
from 3 to 5.5 V supplies. The device requires only
four small 0.1 mF standard external capacitors for
operations from 3 V supply.
TSSOP16
Equipment, Hand-Held Equipment, Peripherals
and Printers.
The ST3232 has two receivers and two drivers.
The device is guaranteed to run at data rates of
250 kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Subnotebook
and Palmtop Computers, Battery Powered
Table 1.
Device summary
Order codes
Temp. range
Package
Packaging
ST3232CDR
0 to 70 °C
SO-16 (tape and reel)
2500 parts per reel
ST3232BDR
-40 to 85 °C
SO-16 (tape and reel)
2500 parts per reel
ST3232CWR
0 to 70 °C
SO-16 Large (tape and reel)
1000 parts per reel
ST3232BWR
-40 to 85 °C
SO-16 Large (tape and reel)
1000 parts per reel
ST3232CTR
0 to 70 °C
TSSOP16 (tape and reel)
2500 parts per reel
ST3232BTR
-40 to 85 °C
TSSOP16 (tape and reel)
2500 parts per reel
February 2008
Rev 11
1/18
www.st.com
18
Contents
ST3232B - ST3232C
Contents
1
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18
ST3232B - ST3232C
Pin configuration
1
Pin configuration
Figure 1.
Pin connection
Table 2.
Pin description
Pin n°
Symbol
Name and function
1
C1+
Positive terminal for the first charge pump capacitor
2
V+
Doubled voltage terminal
3
C1-
Negative terminal for the first charge pump capacitor
4
C2+
Positive terminal for the second charge pump capacitor
5
C2-
Negative terminal for the second charge pump capacitor
6
V-
Inverted voltage terminal
7
T2OUT
8
R2IN
9
R2OUT
Second receiver output voltage
10
T2IN
Second transmitter input voltage
11
T1IN
First transmitter input voltage
12
R1OUT
First receiver output voltage
13
R1IN
14
T1OUT
15
GND
Ground
16
VCC
Supply voltage
Second transmitter output voltage
Second receiver input voltage
First receiver input voltage
First transmitter output voltage
3/18
Absolute maximum ratings
ST3232B - ST3232C
2
Absolute maximum ratings
Table 3.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
-0.3 to 6
V
VCC
Supply voltage
V+
Doubled voltage terminal
(VCC - 0.3) to 7
V
V-
Inverted voltage terminal
0.3 to -7
V
13
V
-0.3 to 6
V
± 25
V
± 13.2
V
-0.3 to (VCC + 0.3)
V
V+ +|V-|
TIN
Transmitter input voltage range
RIN
Receiver input voltage range
TOUT
Transmitter output voltage range
ROUT
Receiver output voltage range
tSHORT
Note:
Transmitter output short to gnd time
Continuous
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Externally applied V+ and V- can have a maximum magnitude of +7 V, but their absolute
addition can not exceed 13 V.
Running on internal charge pump, intrinsic self limitation allows exceeding those values
without any damage.
Startup voltage sequence (VCC, then V+, then V-) is critical, therefore it is not recommended
to use this device using externally applied voltage to V+ and V-.
4/18
ST3232B - ST3232C
Electrical characteristics
3
Electrical characteristics
Table 4.
Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless
otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
ISUPPLY
VCC Power supply current
Table 5.
Symbol
Min.
Typ.
Max.
Unit
No Load, VCC = 3V ± 10%, TA = 25°C
0.3
1
mA
No Load, VCC = 5V ± 10%, TA = 25°C
1
2
mA
Logic input (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless otherwise
specified. Typical values are referred to TA = 25 °C)
Parameter
VTIL
Input logic threshold low
VTIH
Input logic threshold high
IIL
Test conditions
Test conditions
Min.
Typ.
T-IN (1)
VCC = 3.3V
Unit
0.8
V
2
V
VCC = 5V
Input leakage current
Max.
2.4
± 0.01
T-IN
±1
µA
1. Transmitter input hysteresis is typically 250mV.
Table 6.
Symbol
Transmitter (C1 - C4 = 0.1 µF tested at 3.3 V ± 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 °C,
unless otherwise specified. Typical values are referred to TA = 25 °C)
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VTOUT
Output voltage swing
All transmitter outputs are loaded with
3kΩ to GND
±5
± 5.4
V
RTOUT
Transmitter output
resistance
VCC = V+ = V- = 0V, VOUT = ± 2V
300
10M
Ω
Output short circuit current
VCC = 3V or 5V, VOUT = ± 12
ITSC
Table 7.
± 60
mA
Receiver (C1 - C4 = 0.1 µF tested at 3.3 V ±10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 °C,
unless otherwise specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
VRIN
Receiver input voltage operating
range
VRIL
RS-232 Input threshold low
VRIH
RS-232 Input threshold high
Test conditions
Min.
Typ.
-25
TA = 25°C, VCC = 3.3V
0.6
1.1
TA = 25°C, VCC = 5V
0.8
1.5
Max.
Unit
25
V
V
TA = 25°C, VCC = 3.3V
1.5
2.4
TA = 25°C, VCC = 5V
1.8
2.4
VRIHYS
Input hysteresis
RRIN
Input resistance
TA = 25°C
VROL
TTL/CMOS Output voltage low
IOUT = 1.6mA
VROH
TTL/CMOS Output voltage high IOUT = -1mA
V
0.3
3
VCC-0.6
5
VCC-0.1
V
7
kΩ
0.4
V
V
5/18
Electrical characteristics
ST3232B - ST3232C
Timing characteristics (C1 - C4 = 0.1 µF tested at 3.3 V ± 10 %, VCC = 3 V to 5.5 V,
TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C)
Table 8.
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
300
400
kbps
Data transfer rate
RL = 3kΩ, CL2= 1000pF
one transmitter switching
tPHLR
tPLHR
Propagation delay input to
output
RXIN = RXOUT, CL = 150pF
0.2
µs
|tPHLT
- tTHL|
Transmitter propagation
delay difference
(Note 1)
100
ns
|tPHLR
- tTHR|
Receiver propagation delay
difference
50
ns
DR
SRT
Note:
6/18
Transition slew rate
1
TA = 25°C RL = 3kΩ to 7kΩ VCC = 3.3V
measured from +3V to -3V or -3V to +3V
CL = 150pF to 1000pF
CL = 150pF to 2500pF
Transmitter skew is measured at the transmitter zero cross points.
6
4
30
30
V/µs
V/µs
ST3232B - ST3232C
Application
4
Application
Figure 2.
Application circuits
Table 9.
Capacitance value (µF)
VCC
C1
C2
C3
C4
Cbypass
3.0 to 3.6
0.1
0.1
0.1
0.1
0.1
4.5 to 5.5
0.047
0.33
0.33
0.33
0.33
7/18
Typical performance characteristics
ST3232B - ST3232C
5
Typical performance characteristics
Figure 3.
(unless otherwise specified TJ = 25 °C)
Driver voltage transfer
Figure 4.
characteristics for transmitter input
Driver voltage transfer
characteristics for receiver inputs
Output current vs output low
voltage
Output current vs output low
voltage
Figure 5.
8/18
Figure 6.
ST3232B - ST3232C
Figure 7.
Output current vs output high
voltage
Figure 9.
Receiver input resistance
Typical performance characteristics
Figure 8.
Output current vs output high
voltage
9/18
Package mechanical data
6
ST3232B - ST3232C
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
10/18
ST3232B - ST3232C
Package mechanical data
SO-16 mechanical data
Dim.
mm.
Min.
Typ.
A
a1
inch.
Max.
Min.
Typ.
1.75
0.1
0.068
0.25
a2
Max.
0.004
0.010
1.64
0.063
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45° (typ.)
D
9.8
10
0.385
0.393
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
8.89
0.350
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
S
0.62
0.024
8° (max.)
0016020D
11/18
Package mechanical data
ST3232B - ST3232C
SO-16L mechanical data
Dim.
mm.
Min.
Typ.
A
a1
inch.
Max.
Min.
Typ.
2.65
0.1
0.104
0.2
a2
Max.
0.004
0.008
2.45
0.096
b
0.35
0.49
0.014
0.019
b1
0.23
0.32
0.009
0.012
C
0.5
0.020
c1
45° (typ.)
D
10.1
10.5
0.397
0.413
E
10.0
10.65
0.393
0.419
e
1.27
0.050
e3
8.89
0.350
F
7.4
7.6
0.291
0.300
0.5
1.27
0.020
0.050
G
L
M
S
0.75
0.029
8° (max.)
PO13I
12/18
ST3232B - ST3232C
Package mechanical data
TSSOP16 mechanical data
mm.
inch.
Dim.
Min.
Typ.
A
Max.
Min.
Typ.
Max.
1.2
A1
0.05
A2
0.8
b
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0079
D
4.9
5
5.1
0.193
0.197
0.201
E
6.2
6.4
6.6
0.244
0.252
0.260
E1
4.3
4.4
4.48
0.169
0.173
0.176
1
e
0.65 BSC
K
0°
L
0.45
A
0.60
0.0256 BSC
8°
0°
0.75
0.018
8°
0.024
0.030
A2
A1
b
e
K
c
L
E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
13/18
Package mechanical data
ST3232B - ST3232C
Tape & reel SO-16 mechanical data
mm.
inch.
Dim.
Min.
A
Max.
Min.
330
13.2
Typ.
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
14/18
Typ.
0.504
22.4
0.519
0.882
Ao
6.45
6.65
0.254
0.262
Bo
10.3
10.5
0.406
0.414
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
ST3232B - ST3232C
Package mechanical data
Tape & reel SO-16L mechanical data
mm.
inch.
Dim.
Min.
A
Typ.
Max.
Min.
330
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
Typ.
0.504
22.4
0.519
0.882
Ao
10.8
11.0
0.425
0.433
Bo
10.7
10.9
0.421
0.429
Ko
2.9
3.1
0.114
0.122
Po
3.9
4.1
0.153
0.161
P
11.9
12.1
0.468
0.476
15/18
Package mechanical data
ST3232B - ST3232C
Tape & reel TSSOP16 mechanical data
mm.
inch.
Dim.
Min.
A
Max.
Min.
330
13.2
Typ.
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
16/18
Typ.
0.504
22.4
0.519
0.882
Ao
6.7
6.9
0.264
0.272
Bo
5.3
5.5
0.209
0.217
Ko
1.6
1.8
0.063
0.071
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
ST3232B - ST3232C
Revision history
7
Revision history
Table 10.
Document revision history
Date
Revision
Changes
06-Sep-2006
8
Order codes has been updated and new template.
25-Oct-2006
9
Order codes has been updated.
21-Jan-2008
10
Added note on Table 3.
08-Feb-2008
11
Modified: Table 1 on page 1.
17/18
ST3232B - ST3232C
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