ST3237 ST Microelectronics, ST3237 Datasheet - Page 5

• Manufacturer Part Number: ST3237
• Description: RS-232 TRANSCEIVER WITH STAND-BY
• Manufacturer: ST Microelectronics

TIMING CHARACTERISTICS
(C
Typical values are referred to T
Transmitter Skew is measured at the transmitter zero cross points
Symbol
t
t
R_SKEW
T_SKEW
t
t
1
t
t
PHLR
S
PLHR
OER
ODR
D
- C
RT
R
4
= 0.1 F tested at 3.3V 10%, V
Maximum Data Rate
Propagation Delay Input to
Output
Transmitter Skew
Receiver Skew
Receiver Output Enable
Time
Receiver Output Disable
Time
Transition Slew Rate
Parameter
A
= 25°C)
R
one trasmitter switching VHSCI=GND
R
one trasmitter switching VHSCI=V
V
R
|t
|t
|t
Normal Operation
Normal Operation
T
measured from +3V to -3V or -3V to +3V
C
C
C
PHL
PHL
PHL
A
CC
L
L
IN
L
L
L
= 25°C R
= 3K
= 3K
= 150pF to 1000pF
= 150pF to 1000pF
= 150pF to 2500pF
= 3 to 5.55V
to R
CC
- t
- t
- t
TLH
TLH
TLH
OUT
= 3V to 5.5V, T
|
|
|
Test Conditions
L
C
C
= 3 to 7K
L
L
= 1000pF
= 250pF
C
VHSCI=GND
VHSCI=V
L
= 150pF
VHSCI=GND
VHSCI=V
VHSCI=GND
A
= -40 to 85°C, unless otherwise specified.
V
CC
CC
= 3.3V
CC
CC
Min.
250
100
24
6
4
Typ.
0.15
100
130
60
50
80
Max.
150
30
30
ST3237
Kbps
Kbps
V/ s
V/ s
V/ s
Unit
ns
ns
ns
ns
ns
s
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