ST3243 ST Microelectronics, ST3243 Datasheet - Page 5

• Manufacturer Part Number: ST3243
• Description: RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
• Manufacturer: ST Microelectronics

TRANSMITTER ELECTRICAL CHARACTERISTICS
(C
Typical values are referred to T
RECEIVER ELECTRICAL CHARACTERISTICS
(C
Typical values are referred to T
TIMING CHARACTERISTICS
(C
Typical values are referred to T
Symbol
Symbol
Symbol
t
t
V
R_SKEW
T_SKEW
V
R
t
1
1
V
V
R
1
t
V
t
V
RIHYS
S
t
INVH
TOUT
INVL
I
D
PHL
PLH
OUT
SC
RIN
RIH
RIN
OT
RIL
- C
- C
- C
RT
R
4
4
4
= 0.1 F, V
= 0.1 F, V
= 0.1 F, V
Output Voltage Swing
Output Resistance
Output Short Circuit Current
Transmitter Output Voltage
Receiver Input Voltage
Operating Range
RS-232 Input Threshold
Low
RS-232 Input Threshold
High
Input Hysteresis
Input Resistance
Maximum Data Rate
Receiver Propagation Delay R
Transmitter Skew
Receiver Skew
Receiver Positive or
negative Threshold to
INVALID HIGH
Receiver Positive or
negative Threshold to
INVALID LOW
Transition Slew Rate
Parameter
Parameter
Parameter
CC
CC
CC
= 3V to 5.5V, T
= 3V to 5.5V, T
= 3V to 5.5V, T
A
A
A
= 25°C)
= 25°C)
= 25°C)
All Transmitter outputs are loaded with
3K
V
T1IN = T2IN = GND,
T3OUT loaded with 3K
T1OUT and T2OUT loaded with 2.5mA
each
T
T
T
T
T
R
one trasmitter switching
T
measured from +3V to -3V or -3V to +3V
C
C
A
A
A
A
A
A
CC
L
IN
L
L
A
A
A
= 25°C
= 25°C
= 25°C
= 25°C
= 25°C
= 25°C R
= 3K
= 150pF to 1000pF
= 150pF to 2500pF
to R
= -40 to 85°C, unless otherwise specified.
= V+ = V- = 0V
= -40 to 85°C, unless otherwise specified.
= -40 to 85°C, unless otherwise specified.
to GND
OUT
Test Conditions
Test Conditions
Test Conditions
L
V
V
V
V
C
= 3K to 7K
CC
CC
CC
CC
L
= 1000pF
= 3.3V
= 5.0V
= 3.3V
= 5.0V
C
L
= 150pF
to GND
V
T3IN = V
OUT
V
=
CC
CC
2V
= 3.3V
Min.
Min.
300
-25
0.6
0.8
Min.
250
3
5
5
6
4
Typ.
10M
Typ.
Typ.
0.15
1.2
1.2
1.5
1.8
0.5
400
100
5.4
50
30
35
5
1
Max.
Max.
Max.
2.4
2.4
25
30
30
60
7
ST3243
Kbps
Unit
V/ s
V/ s
Unit
Unit
mA
K
ns
ns
V
V
V
V
V
V
s
s
s
5/11