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Электронный компонент: ST202CDR

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1/10
June 2001
s
SUPPLY VOLTAGE RANGE: 4.5 TO 5.5V
s
SUPPLY CURRENT NO LOAD (TYP): 1.5mA
s
TRASMITTER OUTPUT VOLTAGE SWING
(TYP):
9V
s
TRANSITION SLEW RATE (TYP.): 12V/
s
s
RECEIVER PROPAGATION DELAY (TYP.):
0.1
s
s
COMPATIBLE WITH MAX202
s
RECEIVER INPUT VOLTAGE RANGE:
30V
s
DATA RATE (TYP.): 400Kbp/s
s
OPERATING TEMPERATURE RANGE:
-40 TO 85 C, 0 TO 70C
DESCRIPTION
The ST202 is a 2 driver, 2 receiver device
following EIA/TIA-232 and V.28 communication
standard. It is particularly suitable for applications
where
12V is not available. The ST202 uses a
single 5V power supply and only four external
capacitors (0.1
F). Typical application are in:
Portable Computers, Low Power Modems,
Interfaces Translation, Battery Powered RS-232
Networks.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST202CN
0 to 70 C
DIP-16
25parts per tube / 40tube per box
ST202BN
-40 to 85 C
DIP-16
25parts per tube / 40tube per box
ST202CD
0 to 70 C
SO-16 (Tube)
50parts per tube / 20tube per box
ST202BD
-40 to 85 C
SO-16 (Tube)
50parts per tube / 20tube per box
ST202CDR
0 to 70 C
SO-16 (Tape & Reel)
2500 parts per reel
ST202BDR
-40 to 85 C
SO-16 (Tape & Reel)
2500 parts per reel
ST202CW
0 to 70 C
SO-16 Large (Tube)
49parts per tube / 25tube per box
ST202BW
-40 to 85 C
SO-16 Large (Tube)
49parts per tube / 25tube per box
ST202CWR
0 to 70 C
SO-16 Large (Tape & Reel)
1000 parts per reel
ST202BWR
-40 to 85 C
SO-16 Large (Tape & Reel)
1000 parts per reel
ST202CTR
0 to 70 C
TSSOP16 (Tape & Reel)
2500 parts per reel
ST202BTR
-40 to 85 C
TSSOP16 (Tape & Reel)
2500 parts per reel
ST202
5V POWERED MULTI-CHANNEL
RS-232 DRIVERS AND RECEIVERS
SOP Large
DIP
SOP
TSSOP
ST202
2/10
PIN CONFIGURATION
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
PlN N
SYMBOL
NAME AND FUNCTION
1
C
1
+
Positive Terminal for the first Charge Pump Capacitor
2
V+
Doubled Voltage Terminal
3
C
1
-
Negative Terminal for the first Charge Pump Capacitor
4
C
2
+
Positive Terminal for the second Charge Pump Capacitor
5
C
2
-
Negative Terminal for the second Charge Pump Capacitor
6
V-
Inverted Voltage Terminal
7
T2
OUT
Second Transmitter Output Voltage
8
R2
IN
Second Receiver Input Voltage
9
R2
OUT
Second Receiver Output Voltage
10
T2
IN
Second Transmitter Input Voltage
11
T1
IN
First Transmitter Input Voltage
12
R1
OUT
First Receiver Output Voltage
13
R1
IN
First Receiver Input Voltage
14
T1
OUT
First Transmitter Output Voltage
15
GND
Ground
16
V
CC
Supply Voltage
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.3 to 6
V
V+
Extra Positive Voltage
(V
CC
-0.3) to 13.2
V
V-
Extra Negative Voltage
0.3 to -13.2
V
T
IN
Transmitter Input Voltage Range
-0.3 to (V
CC
+ 0.3)
V
R
IN
Receiver Input Voltage Range
30
V
T
OUT
Transmitter Output Voltage Range
15
V
R
OUT
Receiver Output Voltage Range
-0.3 to (V
CC
+ 0.3)
V
T
SCTOUT
Short Circuit Duration on T
OUT
infinite
ST202
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ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F, V
CC
= 5V
10%, T
A
= -40 to 85C, unless otherwise specified.
Typical values are referred to T
A
= 25C)
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F, V
CC
= 5V
10%, T
A
= -40 to 85C, unless otherwise specified.
Typical values are referred to T
A
= 25C)
Note 1: Measured from 3V to -3V or from -3V to 3V.
Note2: One trasmitter output is loaded with R
L
= 3K
to 7K
, C
L
= 50 to 1000pF
RECEIVER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F, V
CC
= 5V
10%, T
A
= -40 to 85C, unless otherwise specified.
Typical values are referred to T
A
= 25C)
Note 1: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
SUPPLY
V
CC
Power Supply Current
No Load
1.5
4
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
TOUT
Output Voltage Swing
All Transmitter outputs are loaded with
3K
to GND
5
9
V
I
TIL
Logic Pull-Up Current
T
IN
= 0V
5
40
A
V
TIL
Input Logic Threshold Low
0.8
1.4
V
V
TIH
Input Logic Threshold High
1.4
2
V
SR
T
Transition Slew Rate
T
A
= 25C,
V
CC
= 5V
R
L
= 3 to 7K
,
C
L
= 50 to 2500pF
(Note1)
6
12
30
V/
s
D
R
Data Rate
(Note 2)
200
400
Kbits/s
R
TOUT
Transmitter Output
Resistance
V
CC
= V+ = V- = 0V
V
OUT
=
2V
300
I
SC
Transmitter Output Short
Circuit Current
one T
XOUT
to GND
7
22
mA
t
dT
Propagation Delay Time
TTL-CMOS IN to RS-232 OUT
C
L
= 150pF (50% to 50%)
1.3
3.5
s
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
RIN
Receiver Input Voltage
Operating Range
-30
30
V
R
RIN
RS-232 Input Resistance
T
A
= 25C
3
5
7
K
V
RIL
RS-232 Input Threshold
Low
0.8
1.3
V
V
RIH
RS-232 Input Threshold
High
1.8
2.4
V
V
RIHYS
RS-232 Input Hysteresis
V
CC
= 5V
0.2
0.5
1
V
V
ROL
TTL/CMOS Output Voltage
Low
I
OUT
= 3.2mA (to V
CC
)
0.2
0.4
V
V
ROH
TTL/CMOS Output Voltage
High
I
OUT
= 1mA (to GND)
3.5
V
CC
-0.2
V
I
SCR
Receiver Output Short
Circuit Current
to GND
to V
CC
2
10
10
30
mA
mA
t
dR
Propagation Delay Time
C
L
= 150pF (Note 1)
0.1
0.5
s
ST202
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APPLICATION CIRCUITS (note 1, note 2)
Note 1: C
1-4
capacitors can even be 1
F ones.
Note 2: C
1-4
can be common or biased capacitors.
CAPACITANCE VALUE (
F)
C1
C2.
C3
C4
C5
0.1
0.1
0.1
0.1
0.1
ST202
5/10
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T
j
= 25C)
Figure 1 : Driver Voltage Transfer Characteristics
Figure 2 : Drive Short Circuit Output Current vs
Temperature
Figure 3 : Receiver Threshold vs Supply Voltage
Figure 4 : Driver Output Capability Current vs
Output Voltage
Figure 5 : Driver Short Circuit Supply Current vs
Temperature
Figure 6 : Receiver Threshold vs Temperature