STMICROELECTRONICS ST3232CD

ST3232
3 TO 5.5V, LOW POWER, UP TO 400KBPS,
RS-232 DRIVERS AND RECEIVERS
■
■
■
■
■
300µA SUPPLY CURRENT
300Kbps MINIMUM GUARENTEED DATA
RATE
6V/µs MINIMUM GUARANTEED SLEW RATE
MEET EIA/TIA-232 SPECIFICATIONS DOWN
TO 3V
AVAILABLE IN DIP-16, SO-16, SO-16 LARGE
AND TSSOP16
DESCRIPTION
The ST3232 is a 3V 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 5.5V supplies. The device requires only
four small 0.1µF standard external capacitors for
operations from 3V supply.
The ST3232 has two receivers and two drivers.
The device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Subnotebook
and Palmtop Computers, Battery Powered
Equipment, Hand-Held Equipment, Peripherals
and Printers.
DIP
SOP
SOP Large
TSSOP
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST3232CN
ST3232BN
ST3232CD
ST3232BD
ST3232CDR
ST3232BDR
ST3232CW
ST3232BW
ST3232CWR
ST3232BWR
ST3232CTR
ST3232BTR
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
DIP-16
DIP-16
SO-16 (Tube)
SO-16 (Tube)
SO-16 (Tape & Reel)
SO-16 (Tape & Reel)
SO-16 Large (Tube)
SO-16 Large (Tube)
SO-16 Large (Tape & Reel)
SO-16 Large (Tape & Reel)
TSSOP16 (Tape & Reel)
TSSOP16 (Tape & Reel)
25parts per tube / 40tube per box
25parts per tube / 40tube per box
50parts per tube / 20tube per box
50parts per tube / 20tube per box
2500 parts per reel
2500 parts per reel
49parts per tube / 25tube per box
49parts per tube / 25tube per box
1000 parts per reel
1000 parts per reel
2500 parts per reel
2500 parts per reel
May 2002
1/11
ST3232
PIN CONFIGURATION
PIN DESCRIPTION
PlN N°
SYMBOL
1
C1+
Positive Terminal for the first Charge Pump Capacitor
2
3
V+
C1-
Doubled Voltage Terminal
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
7
VT2OUT
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
VCC
16
NAME AND FUNCTION
Inverted Voltage Terminal
Second Transmitter Output Voltage
Second Receiver Input Voltage
First Receiver Input Voltage
First Transmitter Output Voltage
Ground
Supply Voltage
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Supply Voltage
Value
Unit
-0.3 to 6
V
V+
Doubled Voltage Terminal
(VCC - 0.3) to 7
V
VV+ +|V-|
TIN
Inverted Voltage Terminal
0.3 to -7
13
V
V
Transmitter Input Voltage Range
-0.3 to 6
V
RIN
Receiver Input Voltage Range
TOUT
Transmitter Output Voltage Range
ROUT
Receiver Output Voltage Range
tSHORT
Transmitter Output Short to GND Time
± 25
V
± 13.2
V
-0.3 to (VCC + 0.3)
V
Continuous
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.
2/11
ST3232
ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, V CC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
ISUPPLY VCC Power Supply Current
Test Conditions
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
Typ.
Max.
Unit
LOGIC INPUT ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, V CC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Conditions
VTIL
Input Logic Threshold Low
T-IN (Note 1)
VTIH
Input Logic Threshold High
VCC = 3.3V
VCC = 5V
Input Leakage Current
T-IN
IIL
Min.
0.8
2
2.4
V
V
V
± 0.01
±1
µA
Max.
Unit
Note 1: Transmitter input hysteresis is typically 250mV
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF tested at V CC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
VTOUT
Output Voltage Swing
RTOUT
Transmitter Output
Resistance
Output Short Circuit
Current
ITSC
Test Conditions
All Transmitter outputs are loaded with
3KΩ to GND
VCC = V+ = V- = 0V
VOUT = ± 2V
VCC = 3V to 5V
Min.
Typ.
±5
± 5.4
V
300
10M
Ω
VOUT = ± 12V
± 60
mA
Max.
Unit
25
V
RECEIVER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF tested at V CC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
VRIN
VRIL
VRIH
Parameter
Test Conditions
Receiver Input Voltage
Operating Range
RS-232 Input Threshold
Low
TA = 25°C
TA = 25°C
VCC = 3.3V
VCC = 5V
RS-232 Input Threshold
High
TA = 25°C
TA = 25°C
VCC = 3.3V
VCC = 5V
Min.
-25
0.6
0.8
1.2
1.5
1.5
1.8
VRIHYS Input Hysteresis
V
V
2.4
2.4
0.3
RRIN
Input Resistance
TA = 25°C
VROL
TTL/CMOS Output Voltage
Low
TTL/CMOS Output Voltage
High
IOUT = 1.6mA
VROH
Typ.
IOUT = -1mA
3
5
VCC-0.6 VCC-0.1
V
V
V
7
KΩ
0.4
V
V
3/11
ST3232
TIMING CHARACTERISTICS
(C1 - C4 = 0.1µF, V CC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
DR
Parameter
Data Transfer Rate
tPHLR
tPLHR
Propagation Delay Input to
Output
|tPHLT
- tTHL|
Transmitter Propagation
Delay Difference
|tPHLR
- tTHR|
Receiver Propagation Delay
Difference
SRT
Trnasition Slew Rate
Test Conditions
RL = 3KΩ
CL2= 1000pF
one trasmitter switching
RXIN = RXOUT
CL = 150pF
Min.
Typ.
300
400
Kbps
0.2
µs
100
ns
50
ns
(Note 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
6
4
Max.
30
30
Unit
V/µs
V/µs
Transmitter Skew is measured at the transmitter zero cross points
APPLICATION CIRCUITS
CAPACITANCE VALUE (µF)
4/11
VCC
C1
C2
C3
C4
Cbypass
3.0 to 3.6
4.5 to 5.5
0.1
0.047
0.1
0.33
0.1
0.33
0.1
0.33
0.1
0.33
ST3232
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C)
Figure 1 : Driver Voltage Transfer Characteristics
for Trasmitter Inputs
Figure 4 : Output Current vs Output Low Voltage
Figure 2 : Driver Voltage Transfer Characteristics
for Receiver Inputs
Figure 5 : Output Current vs Output High Voltage
Figure 3 : Output Current vs Output Low Voltage
Figure 6 : Output Current vs Output High Voltage
5/11
ST3232
Figure 7 : Receiver Input Resistance
6/11
ST3232
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
7/11
ST3232
SO-16 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.068
0.2
a2
MAX.
0.003
0.007
1.65
0.064
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.)
PO13H
8/11
ST3232
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
9/11
ST3232
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
0.0089
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
10/11
ST3232
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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© 2002 STMicroelectronics - Printed in Italy - All Rights Reserved
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11/11