Datasheet

ST3243EB, ST3243EC Electrical characteristics
Doc ID 8648 Rev 12 9/16
C1 - C4 = 0.1 µF, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C, unless otherwise specified.
Typical values are referred to T
A
= 25 °C.
C1 - C4 = 0.1 µF, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C, unless otherwise specified.
Typical values are referred to T
A
= 25 °C.
Table 11. Receiver electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
RIN
Receiver input voltage
operating range
-25 25 V
V
RIL
RS-232 Input threshold
low
T
A
= 25°C, V
CC
= 3.3 V
T
A
= 25°C, V
CC
= 5.0 V
0.6
0.8
1.1
1.4
V
V
RIH
RS-232 Input threshold
high
T
A
= 25°C, V
CC
= 3.3 V
T
A
= 25°C, V
CC
= 5.0 V
1.6
1.9
2.4
2.4
V
V
RIHYS
Input hysteresis 0.5 V
R
RIN
Input resistance T
A
= 25°C 3 5 7 kΩ
Table 12. Timing characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
D
R
Maximum data rate
R
L
= 3kΩ, C
L
= 1000 pF one transmitter
switching
250 400 kbps
t
PHL
t
PLH
Receiver propagation
delay
R
IN
to R
OUT
, C
L
= 150 pF 0.15 µs
t
T_SKEW
Transmitter skew 150 ns
t
R_SKEW
Receiver skew 70 ns
S
RT
Transition slew rate
T
A
= 25°C R
L
= 3k to 7kΩ, V
CC
= 3.3 V
measured from +3 V to -3 V or -3 V to +3 V
C
L
= 150 pF to 1000 pF
C
L
= 150 pF to 2500 pF
6
4
30
30
V/µs
V/µs