Electrical characteristics ST3243B, ST3243C
8/18 DocID7539 Rev 12
C
1
- C
4
= 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.
C
1
- C
4
= 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 8. Auto-power-down electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
RITE
Receiver input threshold to
transmitter enabled
Positive threshold
Negative threshold 2.7
2.7
V
V
RITD
Receiver input threshold to
transmitter disabled
1 µA supply current -0.3 0.3
V
IOL
INVALID output voltage LOW 0.4
V
IOH
INVALID output voltage HIGH V
CC
- 0.6
t
WU
Receiver threshold to
transmitter enabled
I
OUT
= 1.6 mA 250
µs
t
INVH
Receiver positive or negative
threshold to INVALID
HIGH
I
OUT
= -1 mA 1
t
INVL
Receiver positive or negative
threshold to INVALID
LOW
30
Table 9. Transmitter electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
TOUT
Output voltage swing
All transmitter outputs are loaded
with
3 kΩ to GND
± 5 ± 5.4 V
R
OUT
Output resistance V
CC
= V+ = V- = 0 V, V
OUT
= ± 2 V 300 10 M Ω
I
SC
Output short-circuit current ± 35 ± 60 mA
V
OT
Transmitter output voltage
T1IN = T2IN = GND, T3IN = V
CC
T3OUT loaded with 3 kΩ to GND
T1OUT and T2OUT loaded with
2.5 mA each
± 5V
