ST202E/ST232E
3/14
ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
μ
F for ST202E, C
1
- C
4
= 1
μ
F for ST232E, V
CC
= 5V
±
10%, T
A
= -40 to 85°C,
unless otherwise specified. Typical values are referred to T
A
= 25°C)
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
μ
F for ST202E, C
1
- C
4
= 1
μ
F for ST232E, V
CC
= 5V
±
10%, T
A
= -40 to 85°C,
unless otherwise specified. Typical values are referred to T
A
= 25°C)
Note 1: Measured from 3V to -3V or from -3V to 3V.
Note2: One transmitter output is loaded with R
L
= 3K
to 7K
, C
L
= 50 to 1000pF
RECEIVER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
μ
F for ST202E, C
1
- C
4
= 1
μ
F for ST232E, V
CC
= 5V
±
10%, T
A
= -40 to 85°C,
unless otherwise specified. Typical values are referred to T
A
= 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
SUPPLY
V
CC
Power Supply Current
No Load,
T
A
= 25°C
5
10
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
V
TIL
V
TIH
SR
T
Input Leakage Current
Input Logic Threshold Low
Input Logic Threshold High
Transition Slew Rate
±
1
μA
V
V
V/
μ
s
0.8
2
T
A
= 25°C,
R
L
= 3 to 7K
,
(Note1)
R
L
= 3 to 7K
,
one transmitter switching
V
CC
= V+ = V- = 0V
V
CC
= 5V
C
L
= 50 to 1000pF
3
6
30
D
R
Data Rate
C
L
= 50 to 1000pF
230
400
Kbits/s
R
TOUT
Transmitter Output
Resistance
Transmitter Output Short
Circuit Current
Transmitter Propagation
Delay
V
OUT
=
±
2V
300
I
SC
±
10
±
60
mA
t
DT
R
L
= 3 to 7K
,
All transmitter loaded
C
L
= 50 to 2500pF
2
μ
A
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
RIN
Receiver Input Voltage
Operating Range
RS-232 Input Resistance
RS-232 Input Logic
Threshold Low
RS-232 Input Logic
Threshold High
RS-232 Input Hysteresis
TTL/CMOS Output Voltage
Low
TTL/CMOS Output Voltage
High
Receiver Propagation Delay C
L
= 150pF
-30
30
V
R
RIN
V
RIL
T
A
= 25°C, V
CC
= 5 V
T
A
= 25°C, V
CC
= 5 V
3
5
7
K
V
0.8
1.2
V
RIH
T
A
= 25°C, V
CC
= 5 V
1.7
2.4
V
V
RIHYS
V
ROL
V
CC
= 5V
I
OUT
= 3.2mA
0.2
0.5
1
V
V
0.4
V
ROH
I
OUT
= -1mA
3.5
V
CC
-0.4
V
t
DR
0.5
10
μ
s