Datasheet

Electrical characteristics ST3232EB, ST3232EC
6/17 Doc ID 8784 Rev 6
C
1
- C
4
= 0.1 µF tested at 3.3 V ± 10 %, 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 tested at 3.3 V ± 10 %, 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 7. Receiver
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
= 3.3V 0.6 1.1
V
T
A
= 25°C, V
CC
= 5V 0.8 1.5
V
RIH
RS-232 Input threshold high
T
A
= 25°C, V
CC
= 3.3V 1.4 2.4
V
T
A
= 25°C, V
CC
= 5V 1.8 2.4
V
RIHYS
Input hysteresis 0.5 V
R
RIN
Input resistance T
A
= 25°C 3 5 7 kΩ
V
ROL
TTL/CMOS Output voltage low I
OUT
= 1.6mA 0.4 V
V
ROH
TTL/CMOS Output voltage high I
OUT
= -1mA V
CC
-0.6 V
CC
-0.1 V
Table 8. Timing characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
D
R
Data transfer rate
R
L
= 3KΩ, C
L2
= 1000pF
one transmitter switching
250 kbps
t
PHLR
t
PLHR
Propagation delay input to
output
R
XIN
= R
XOUT
, C
L
= 150pF 0.15 µs
t
OER
Receiver output enable time Normal Operation 50 ns
t
ODR
Receiver output disable time Normal Operation 50 ns
|t
PHLT
- t
THL
|
Transmitter propagation
delay difference
(1)
200 ns
|t
PHLR
- t
THR
|
Receiver propagation delay
difference
50 ns
S
RT
Transition slew rate
T
A
= 25°C R
L
= 3kΩ to 7kΩ V
CC
= 3.3V
measured from +3V to -3V or -3V to +3V
C
L
= 150pF to 1000pF
C
L
= 150pF to 2500pF
6
4
30
30
V/µs
V/µs
1. Transmitter skew is measured at the transmitter zero cross points.