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PDF ST3232B Data sheet ( Hoja de datos )
| Número de pieza | ST3232B | |
| Descripción | RS-232 drivers and receivers | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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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, battery-
powered equipment, hand-held equipment,
peripherals, and printers.
Table 1: Device summary
Order code Temp. range Package Packaging
ST3232CDR
ST3232BDR
0 to 70 °C
-40 to 85 °C
SO16
(tape and
reel)
2500 parts
per reel
ST3232CWR
ST3232BWR
0 to 70 °C
-40 to 85 °C
SO16L
(tape and
reel)
1000 parts
per reel
ST3232CTR
ST3232BTR
0 to 70 °C
-40 to 85 °C
TSSOP16
(tape and
reel)
2500 parts
per reel
January 2016
DocID7454 Rev 12
This is information on a product in full production.
1/18
www.st.com
1 page  
ST3232B, ST3232C
Electrical characteristics
3 Electrical characteristics
Symbol
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
ISUPPLY VCC power supply current
No load, VCC = 3 V ± 10 %, TA = 25 °C
No load, VCC = 5 V ± 10 %, TA = 25 °C
0.3 1
mA
12
Symbol
VTIL
VTIH
IIL
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
Test conditions
Min.
Typ.
Max. Unit
Input logic threshold low
T-IN (1)
0.8
Input logic threshold high
VCC = 3.3 V
VCC = 5 V
2
2.4
V
Input leakage current
T-IN
±0.01
±1
µA
Notes:
(1)Transmitter input hysteresis is typically 250 mV.
Symbol
VTOUT
RTOUT
ITSC
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
Transmitter output
resistance
VCC = V+ = V- = 0 V, VOUT = ±2 V
300
10
M
Ω
Output short circuit current VCC = 3 V or 5 V, VOUT = ±12
± 60 mA
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)
Symbol
Parameter
Test conditions
Min.
Typ. Max. Unit
VRIN
VRIL
VRIH
VRIHYS
RRIN
VROL
VROH
Receiver input voltage operating range
RS-232 Input threshold low
RS-232 Input threshold high
Input hysteresis
Input resistance
TTL/CMOS output voltage low
TTL/CMOS output voltage high
TA = 25 °C, VCC = 3.3 V
TA = 25 °C, VCC = 5 V
TA = 25 °C, VCC = 3.3 V
TA = 25 °C, VCC = 5 V
TA = 25 °C
IOUT = 1.6 mA
IOUT = -1 mA
-25
0.6
0.8
3
VCC - 0.6
1.1
1.5
1.5
1.8
0.3
5
VCC - 0.1
25
2.4
2.4
7
0.4
V
kΩ
V
DocID7454 Rev 12
5/18
5 Page 
ST3232B, ST3232C
6.1 SO16 package information
Figure 10: SO16 package outline
Package information
Table 10: SO16 mechanical data
Dimensions
Ref Millimeters
Inches
Min.
Typ.
Max
Min.
Typ.
A 1.75
a1 0.1
0.25 0.004
a2 1.64
b 0.35
0.46 0.013
b1 0.19
0.25 0.007
C 0.5
c1 45 °
D 9.8
10 0.385
E 5.8
6.2 0.228
e 1.27
e3 8.89
F 3.8
4.0 0.149
G 4.6
5.3 0.181
L 0.5
1.27 0.019
M 0.62
S 8°
0.019
45 °
0.050
0.350
Max.
0.068
0.010
0.063
0.018
0.010
0.393
0.244
0.157
0.208
0.050
0.024
8°
DocID7454 Rev 12
11/18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet ST3232B.PDF ] | |
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