STMICROELECTRONICS ST232CTR

ST232B
ST232C
5 V powered multi-channel RS-232 drivers and receivers
Features
■
Supply voltage range: 4.5 to 5.5 V
■
Supply current no load (typ.): 5 mA
■
Transmitter output voltage swing (typ): ±7.8 V
■
Controlled output slew rate
■
Receiver input voltage range: ± 30 V
■
Data rate (typ.): 220 kbps
■
Operating temperature range:
– -40 ° to 85 °C
– 0 ° to 70 °C
■
Compatible with MAX232 and MAX202
DIP
SOP
SOP Large
TSSOP
Description
The ST232 is a 2 driver, 2 receiver device
following EIA/TIA-232 and V.28 communication
standard. It is particularly suitable for applications
where ±12 V is not available. The ST232 uses a
single 5 V power supply and only four external
capacitors (0.1 µF). Typical applications are in:
portable computers, low power modems,
interfaces translation, battery powered RS-232
system, multi-drop RS-232 networks.
Table 1.
Device summary
Order code
Temperature
range
Package
Packaging
ST232CN
0 to 70 °C
DIP-16
25 parts per tube / 40 tube per box
ST232CDR
0 to 70 °C
SO-16 (tape and reel)
2500 parts per reel
ST232BDR
-40 to 85 °C
SO-16 (tape and reel)
2500 parts per reel
ST232CWR
0 to 70 °C
SO-16 Large (tape and reel)
1000 parts per reel
ST232BWR
-40 to 85 °C
SO-16 Large (tape and reel)
1000 parts per reel
ST232CTR
0 to 70 °C
TSSOP16 (tape and reel)
2500 parts per reel
ST232BTR
-40 to 85 °C
TSSOP16 (tape and reel)
2500 parts per reel
February 2008
Rev 14
1/19
www.st.com
19
ST232B - ST232C
Contents
1
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
ST232B - ST232C
Pin configuration
1
Pin configuration
Figure 1.
Pin connections (top view)
Table 2.
Pin description
Pin n°
Symbol
Note
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
3/19
Maximum ratings
ST232B - ST232C
2
Maximum ratings
Table 3.
Absolute maximum ratings
Symbol
Parameter
VCC
Supply voltage
TIN
Transmitter input voltage range
RIN
Receiver input voltage range
Value
Unit
-0.3 to 6
V
-0.3 to (VCC + 0.3)
V
± 30
V
(V+ + 0.3) to (V- - 0.3)
V
V
TOUT
Transmitter output voltage range
ROUT
Receiver output voltage range
-0.3 to (VCC + 0.3)
TSCTOUT
Short circuit duration on TOUT
infinite
TSTG
Note:
4/19
Storage temperature range
-65 to + 150
1
Absolute maximum ratings are those values beyond which damage to the device may
occur. Functional operation under these condition is not implied.
2
No external supply can be applied to V+ terminal and V- terminal.
ST232B - ST232C
Electrical characteristics
3
Electrical characteristics
Table 4.
Electrical characteristics
(C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical
values are referred to TA = 25 °C).
Symbol
ISUPPLY
Table 5.
Parameter
Test condition
VCC Power supply current
Min.
No Load, TA = 25°C
Parameter
Test condition
Unit
5
10
mA
All transmitter outputs are loaded
with 3kΩ to GND
Min.
Typ.
±5
± 7.8
VTOUT
Output voltage swing
ITIL
Input leakage current
VTIL
Input logic threshold low
VTIH
Input logic threshold high
SRT
Transition slew rate
TA = 25°C, VCC = 5V
RL = 3 to 7kΩ, CL = 50 to 2500pF (1)
DR
Data rate
(2)
120
Transmitter output resistance
VCC = V+ = V- = 0V VOUT = ± 2V
300
Transmitter output short circuit
current
One TXOUT to GND
ISC
Max.
Transmitter electrical characteristics
(C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical
values are referred to TA = 25 °C).
Symbol
RTOUT
Typ.
Max.
Unit
V
± 40
0.8
µA
V
7
2
V
30
V/µs
220
kbits/s
Ω
±10
±60
mA
1. Measured from 3 V to -3 V or from -3 V to 3 V
2. One transmitter output is loaded with RL = 3 kΩ to 7 kΩ, CL = 50 to 1000 pF
5/19
Electrical characteristics
Table 6.
Symbol
ST232B - ST232C
Receiver electrical characteristics
(C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical
values are referred to TA = 25 °C).
Parameter
Test condition
Min.
Typ.
VRIN
Receiver input voltage
operating range
RRIN
RS-232 input resistance
TA = 25°C, VCC = 5 V,
VRIN = 5V
3
5
VRIL
RS-232 input threshold low
TA = 25°C, VCC = 5 V
0.8
1.2
VRIH
RS-232 input threshold high
TA = 25°C, VCC = 5 V
RS-232 input hysteresis
VCC = 5V
VROL
TTL/CMOS output voltage low
IOUT = 3.2mA (to VCC)
VROH
TTL/CMOS output voltage high
IOUT = -1mA (to GND)
ISCR
Receiver output short circuit
current
tDR
Receiver propagation delay
VRIHYS
1. RS-232 in to TTL-CMOS out (from 50% to 50%)
6/19
-30
CL = 150pF (1)
0.2
3.5
Max.
Unit
30
V
7
kΩ
V
1.7
2.4
V
0.5
1
V
0.4
V
VCC-0.4
V
±10
mA
0.3
1
µs
ST232B - ST232C
Typical application
4
Typical application
Figure 2.
Application circuit (1) (2)
1. C1-4 capacitors can even be 1µF ones
2. C1-4 can be common or biased capacitors
Table 7.
Capacitance value (µF)
C1
C2
C3
C4
C5
0.1
0.1
0.1
0.1
0.1
7/19
Typical performance characteristics
ST232B - ST232C
5
Typical performance characteristics
Figure 3.
(Unless otherwise specified TJ = 25 °C)
Supply current vs temperature
Figure 4.
Data rate vs temperature
Figure 5.
Receiver propagation delay
Figure 6.
Driver propagation delay
Figure 7.
High level output voltage swing vs
temperature
Figure 8.
Low level output voltage swing vs
temperature
8/19
ST232B - ST232C
Figure 9.
High level transmitter output short
circuit current vs temperature
Figure 11. High level receiver output short
circuit current vs temperature
Typical performance characteristics
Figure 10. Low level transmitter output short
circuit current vs temperature
Figure 12. Low level receiver output short
circuit current vs temperature
9/19
Package mechanical data
6
ST232B - ST232C
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.
10/19
ST232B - ST232C
Package mechanical data
Plastic DIP-16 (0.25) mechanical data
mm.
inch.
Dim.
Min.
a1
0.51
B
0.77
Typ.
Max.
Min.
Typ.
Max.
0.020
1.65
0.030
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
17.78
0.700
F
7.1
0.280
I
5.1
0.201
L
Z
3.3
0.130
1.27
0.050
P001C
11/19
Package mechanical data
ST232B - ST232C
SO-16 mechanical data
Dim.
mm.
Min.
Typ.
A
a1
inch.
Max.
Min.
Typ.
1.75
0.1
0.25
a2
Max.
0.068
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
12/19
ST232B - ST232C
Package mechanical data
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
13/19
Package mechanical data
ST232B - ST232C
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
14/19
ST232B - ST232C
Package mechanical data
Tape & reel SO-16 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
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
15/19
Package mechanical data
ST232B - ST232C
Tape & reel SO-16L 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
16/19
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
ST232B - ST232C
Package mechanical data
Tape & reel TSSOP16 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
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
17/19
Revision history
ST232B - ST232C
7
Revision history
Table 8.
Document revision history
Date
Revision
02-Sep-2005
11
Mistake ITIL max. on table 5.
27-Oct-2006
12
Order codes updated.
14-Nov-2007
13
Added Table 1.
08-Feb-2008
14
Modified: Table 1 on page 1.
18/19
Changes
ST232B - ST232C
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19/19