ST3232B, ST3232C
3 to 5.5 V, low-power, up to 400 kbs RS-232 drivers and receivers
Datasheet - production data
Features
300 µA supply current
300 kbps minimum guaranteed data rate
6 V/µs minimum guaranteed slew rate
Meets EIA/TIA-232 specifications down to 3 V
Available in SO16, SO16L, and TSSOP16 packages
Description
The ST3232B and ST3232C devices are 3 V powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements and high data-rate capabilities.
These devices have a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5.5 V supplies. The devices require only four small 0.1 mF standard external capacitors for operation from a 3 V supply.
The ST3232B and ST3232C have two receivers and two drivers.
The devices are guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels. Typical applications are notebooks, subnotebooks and palmtop computers, batterypowered equipment, hand-held equipment, peripherals, and printers.
Table 1: Device summary
Order code Temp. range Package Packaging
ST3232CDR 0 to 70 °C
ST3232BDR -40 to 85 °C
ST3232CWR 0 to 70 °C
ST3232BWR -40 to 85 °C
ST3232CTR 0 to 70 °C
ST3232BTR -40 to 85 °C
SO16
(tape and reel)
SO16L
(tape and reel)
TSSOP16
(tape and reel)
2500 parts per reel
1000 parts per reel
2500 parts per reel
January 2016 DocID7454 Rev 12
This is information on a product in full production.
1/18
www.st.com
Contents ST3232B, ST3232C
Contents
1 Pin configuration ............................................................................. 3
2 Absolute maximum ratings ............................................................. 4
3 Electrical characteristics ................................................................ 5
4 Application information .................................................................. 7
5 Typical performance characteristics ............................................. 8
6 Package information ..................................................................... 10
6.1
6.2
6.3
6.4
6.5
6.6
SO16 package information .............................................................. 11
SO16L package information ............................................................ 12
TSSOP16 package information ....................................................... 13
SO16 tape and reel package information ........................................ 14
SO16L tape and reel package information ...................................... 15
TSSOP16 tape and reel package information ................................. 16
7 Revision history ............................................................................ 17
2/18 DocID7454 Rev 12
ST3232B, ST3232C
1 Pin configuration
Figure 1: Pin connections
Pin configuration
Pin n°
13
14
15
16
9
10
11
12
5
6
7
8
1
2
3
4
Symbol
C
1
+
V+
C
1
-
C
2
+
C
2
-
V-
T2
OUT
R2
IN
R2
OUT
T2
IN
T1
IN
R1
OUT
R1
IN
T1
OUT
GND
V
CC
Table 2: Pin description
Name and function
Positive terminal for the first charge pump capacitor
Doubled voltage terminal
Negative terminal for the first charge pump capacitor
Positive terminal for the second charge pump capacitor
Negative terminal for the second charge pump capacitor
Inverted voltage terminal
Second transmitter output voltage
Second receiver input voltage
Second receiver output voltage
Second transmitter input voltage
First transmitter input voltage
First receiver output voltage
First receiver input voltage
First transmitter output voltage
Ground
Supply voltage
DocID7454 Rev 12 3/18
Absolute maximum ratings
2
ST3232B, ST3232C
Absolute maximum ratings
Symbol
Table 3: Absolute maximum ratings
Parameter
V
CC
V+
V-
V+ + |V-|
T
IN
R
IN
T
OUT
R
OUT t
SHORT
T stg
Supply voltage
Doubled voltage terminal
Inverted voltage terminal
Transmitter input voltage range
Receiver input voltage range
Transmitter output voltage range
Receiver output voltage range
Transmitter output short to gnd time
Storage temperature
Value
-0.3 to 6
(V
CC
- 0.3) to 7
0.3 to -7
13
-0.3 to 6
±25
±13.2
-0.3 to (V
CC
+ 0.3)
Continuous
-65 to 150
Unit
V
°C
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 (V
CC
, 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 DocID7454 Rev 12
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)
Parameter Test conditions Min. Typ. Max. Unit Symbol
I
SUPPLY
V
CC
power supply current
No load, V
CC
= 3 V ± 10 %, T
A
= 25 °C
No load, V
CC
= 5 V ± 10 %, T
A
= 25 °C
0.3
1
1
2 mA
Symbol
V
TIL
V
TIH
I
IL
Table 5: 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
Input logic threshold low
Test conditions
T-IN
(1)
Min. Typ. Max.
0.8
Unit
Input logic threshold high
Input leakage current
V
V
CC
CC
= 3.3 V
= 5 V
T-IN
2
2.4
±0.01 ±1
V
µA
Notes:
(1)
Transmitter input hysteresis is typically 250 mV.
Symbol
V
TOUT
Table 6: 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
Output voltage swing
All transmitter outputs are loaded with 3 kΩ to GND
±5 ±5.4 V
R
I
TOUT
TSC
Transmitter output resistance
Output short circuit current V
CC
= 3 V or 5 V, V
OUT
= ±12
V
CC
= V+ = V- = 0 V, V
OUT
= ±2 V 300
10
M
Ω
± 60 mA
Symbol
Table 7: 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)
Parameter Test conditions Min. Typ. Max. Unit
V
RIN
V
RIL
V
RIH
Receiver input voltage operating range
RS-232 Input threshold low
RS-232 Input threshold high
V
RIHYS
Input hysteresis
R
RIN
Input resistance
V
ROL
TTL/CMOS output voltage low
V
ROH
TTL/CMOS output voltage high
T
A
= 25 °C, V
CC
= 3.3 V
T
A
= 25 °C, V
CC
= 5 V
T
A
= 25 °C, V
CC
= 3.3 V
T
A
= 25 °C, V
CC
= 5 V
T
A
= 25 °C
I
OUT
= 1.6 mA
I
OUT
= -1 mA
3
-25
0.6
0.8
1.1
1.5
1.5
1.8
0.3
5
V
CC
- 0.6 V
CC
- 0.1
25
2.4
2.4
7
0.4
V kΩ
V
DocID7454 Rev 12 5/18
Electrical characteristics ST3232B, ST3232C
Table 8: 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)
Symbol Parameter Min. Typ. Max. Unit
D
R
Data transfer rate
Test conditions
R
L
= 3 kΩ, C
L2
= 1000 pF one transmitter switching
300 400 kbps t
PHLR
, t
PLHR
|t
PHLT
- t
THL
|
|t
PHLR
- t
THR
|
Propagation delay input to output
Transmitter propagation delay difference
Receiver propagation delay difference
R
XIN
= R
XOUT
, C
L
= 150 pF
See
(1)
0.2
100
50
µs ns
S
RT
Transition slew rate
T
A
= 25 °C, R
L
= 3 kΩ to 7 kΩ, V
CC
= 3.3 V measured from 3 V to -3 V or -3 V to 3 V,
C
L
= 150 pF to 1000 pF
T
A
= 25 °C, R
L
= 3 kΩ to 7 kΩ, V
CC
= 3.3 V measured from 3 V to -3 V or -3 V to 3 V,
C
L
= 150 pF to 2500 pF
6
4
30
30
V/µs
Notes:
(1)
Transmitter skew is measured at the transmitter zero cross points
6/18 DocID7454 Rev 12
ST3232B, ST3232C
4 Application information
Figure 2: Application circuits
Application information
V
CC
3.0 to 3.6
4.5 to 5.5
C1
Table 9: Capacitance value (µF)
C2 C3
0.1
0.047
0.1
0.33
0.1
0.33
C4
0.1
0.33
Cbypass
0.1
0.33
DocID7454 Rev 12 7/18
Typical performance characteristics ST3232B, ST3232C
5 Typical performance characteristics
Unless otherwise specified T
J
= 25 °C
Figure 3: Driver voltage transfer characteristics for transmitter inputs
Figure 4: Driver voltage transfer characteristics for receiver inputs
Figure 5: Output current vs output low voltage at VCC = 5.5 V
Figure 6: Output current vs output low voltage at VCC = 3 V
8/18 DocID7454 Rev 12
ST3232B, ST3232C
Figure 7: Output current vs output high voltage at VCC = 5.5 V
Typical performance characteristics
Figure 8: Output current vs output high voltage at VCC = 3 V
Figure 9: Receiver input resistance
DocID7454 Rev 12 9/18
Package information
6 Package information
ST3232B, ST3232C
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
® specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
is an ST trademark.
10/18 DocID7454 Rev 12
ST3232B, ST3232C
6.1 SO16 package information
Figure 10: SO16 package outline
Package information
Ref
G
L
M
S
E e e3
F b1
C c1
D
A a1 a2 b
Min.
9.8
5.8
3.8
4.6
0.5
0.1
0.35
0.19
Table 10: SO16 mechanical data
Dimensions
Millimeters
Typ. Min. Max
1.75
0.25
1.64
0.46
0.25
0.004
0.013
0.007
0.5
45 °
1.27
8.89
10
6.2
0.385
0.228
4.0
5.3
1.27
0.62
8 °
0.149
0.181
0.019
Inches
Typ.
0.019
45 °
0.050
0.350
DocID7454 Rev 12
0.393
0.244
0.157
0.208
0.050
0.024
8 °
Max.
0.068
0.010
0.063
0.018
0.010
11/18
Package information
6.2 SO16L package information
Figure 11: SO16L package outline
ST3232B, ST3232C
12/18
Ref e
H h
L k ddd
A
A1
B
C
D
E
10
0.25
0.4
0 °
Min.
2.35
0.1
0.33
0.23
10.1
7.4
Table 11: SO16L mechanical data
Dimensions
Millimeters
Typ. Max
2.65
0.3
0.51
0.32
10.5
7.6
Min.
0.093
0.004
0.013
0.009
0.398
0.291
1.27
10.65
0.75
1.27
8 °
0.1
0.394
0.01
0.016
0 °
Inches
Typ.
0.05
Max.
0.104
0.012
0.02
0.013
0.413
0.299
0.419
0.03
0.05
8 °
0.004
DocID7454 Rev 12
ST3232B, ST3232C
6.3 TSSOP16 package information
Figure 12: TSSOP16 package outline
Package information
Ref
E
E1 e k
L
L1 aaa
A
A1
A2 b c
D
Min
0°
0.45
0.05
0.80
0.19
0.09
4.90
6.20
4.30
Table 12: TSSOP16 mechanical data
Dimensions
Millimeters
Typ Min
1.00
5.00
6.40
4.40
0.65
Max
1.20
0.15
1.05
0.30
0.20
5.10
6.60
4.50
0.002
0.031
0.007
0.004
0.193
0.244
0.169
0.60
1.00
8°
0.75
0°
0.018
0.10
Inches
Typ
0.024
0.039
0.039
0.197
0.252
0.173
0.026
Max
0.047
0.006
0.041
0.012
0.008
0.201
0.260
0.177
8°
0.030
0.004
DocID7454 Rev 12 13/18
Package information
6.4 SO16 tape and reel package information
Figure 13: SO16 tape and reel package outline
ST3232B, ST3232C
14/18
A
C
D
N
T
Ao
Bo
Ko
Po
P
1. Drawing not to scale
Ref
Min.
12.8
20.2
60
6.45
10.3
2.1
3.9
7.9
Table 13: SO16 tape and reel mechanical data
Dimensions
Millimeters
Typ. Min. Max
330
13.2 0.504
0.795
2.362
Inches
Typ.
—
22.4
6.65
10.5
2.3
4.1
8.1
0.254
0.406
0.082
0.153
0.311
—
Max.
12.992
0.519
0.882
0.262
0.414
0.090
0.161
0.319
DocID7454 Rev 12
ST3232B, ST3232C
6.5 SO16L tape and reel package information
Figure 14: SO16L tape and reel package outline
Package information
A
C
D
N
T
Ao
Bo
Ko
Po
P
1. Drawing not to scale
Ref
Min.
12.8
20.2
60
10.8
10.7
2.9
3.9
11.9
Table 14: SO16L tape and reel mechanical data
Dimensions
Millimeters
Typ. Min. Max
330
13.2 0.504
0.795
2.362
Inches
Typ.
—
22.4
11.0
10.9
3.1
4.1
12.1
0.425
0.421
0.114
0.153
0.468
—
Max.
12.992
0.519
0.882
0.433
0.429
0.122
0.161
0.476
DocID7454 Rev 12 15/18
Package information
6.6 TSSOP16 tape and reel package information
Figure 15: TSSOP16 tape and reel package outline
ST3232B, ST3232C
16/18
A
C
D
N
T
Ao
Bo
Ko
Po
P
1. Drawing not to scale
Table 15: TSSOP16 tape and reel mechanical data
Dimensions
Ref
Min.
Millimeters
Typ. Min.
12.8
20.2
60
Max
330
13.2 0.504
0.795
2.362
Inches
Typ.
6.7
5.3
1.6
3.9
7.9
—
22.4
6.9
5.5
1.8
4.1
8.1
0.264
0.209
0.063
0.153
0.311
—
Max.
12.992
0.519
0.882
0.272
0.217
0.071
0.161
0.319
DocID7454 Rev 12
ST3232B, ST3232C
7
Revision history
Revision history
Date Revision
Table 16: Document revision history
Changes
06-Sep-2006
25-Oct-2006
21-Jan-2008
08-Feb-2008
25-Jan-2016
8
9
10
11
12
Order codes has been updated and new template.
Order codes has been updated.
Added note on Table 3.
Modified: Table 1 on page 1.
Updated document layout
Table 3: "Absolute maximum ratings" : added T
stg
Updated titles of Figure 5 , Figure 6 ,
Figure 7 , and Figure 8
Section 6.2
: replaced SO16L package outline and mechanical data
Section 6.3
: removed A1 (typ: inches), updated E1 (max: mm and
inches), added L1 and aaa.
DocID7454 Rev 12 17/18
ST3232B, ST3232C
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18/18 DocID7454 Rev 12
