st3237eb STMicroelectronics, st3237eb Datasheet - Page 7

• Manufacturer Part Number: st3237eb
• Description: ? 15 Kv Esd Protected, 1 ?a, 3 To 5.5 V, 250 Kbps Rs-232 Transceiver With Stand-by
• Manufacturer: STMicroelectronics

Table 8.
Table 9.
Note:
Symbol
t
t
R_SKEW
T_SKEW
Symbol
V
t
t
t
t
t
t
PHLR
PLHR
PHLR
PLHR
S
ODR
V
V
R
OER
V
D
V
RIHYS
V
I
RT
OL
RIN
RIH
OH
RIL
RIN
OL
R
Maximum data rate
Propagation delay input to
output
Propagation delay input to
output
Transmitter skew
Receiver skew
Receiver output enable time Normal operation
Receiver output disable time Normal operation
Transition slew rate
Output leakage current
Output voltage low
Output voltage high
Receiver input voltage
operating range
RS-232 input threshold
low
RS-232 input threshold
high
Input hysteresis
Input resistance
Receiver (C
unless otherwise specified. Typical values are referred to T
Timing characteristics (C
T
Transmitter skew is measured at the transmitter zero cross points
A
= -40 to 85 °C, unless otherwise specified. Typical values are referred to T
Parameter
Parameter
1
- C
4
= 0.1 µF tested at 3.3 V ±10 %, V
Receiver disabled, EN = V
I
I
T
T
T
T
T
R
one transmitter switching, VHSCI=GND
R
one transmitter switching, VHSCI=V
V
R
one transmitter switching, VHSCI=V
V
R
R
VHSCI=V
VHSCI=GND
|t
|t
|t
T
measured from +3V to -3V or -3V to +3V
C
C
C
OUT
OUT
A
A
A
A
A
PHL
PHL
PHL
A
CC
CC
L
L
L
IN
L
L
L
L
= 25°C, V
= 25°C, V
= 25°C, V
= 25°C, V
= 25°C
1
= 25°C R
= 3KΩ , C
= 3KΩ , C
= 3KΩ , C
= 3kΩ , C
= 150pF to 1000pF, VHSCI=GND
= 150pF to 1000pF, VHSCI=V
= 150pF to 2500pF, VHSCI=GND
= 3 to 4.5V
= 4.5 to 5.5V
to R
= 1mA
= -1mA
- C
- t
- t
- t
TLH
TLH
TLH
Test conditions
4
OUT
CC
= 0.1 µF tested at 3.3 V ±10 %, V
|, VHSCI=GND
|, VHSCI=V
|
, C
L
L
L
L
CC
CC
CC
CC
Test conditions
= 1000pF
= 250pF
= 1000pF
= 1000pF,
L
L
= 3 to 7KΩ, V
= 3.3V
= 5V
= 3.3V
= 5V
= 150pF
CC
CC
CC
CC
= 3.3V
CC
= 3 V to 5.5 V, T
V
CC
CC
CC
Min.
A
-25
0.6
0.8
3
-0.6
= 25°C)
1000
1000
Min.
250
24
6
4
CC
V
± 0.05
CC
Typ.
1.1
1.5
1.5
1.2
0.3
= 3 V to 5.5 V,
5
-0.1
A
1000
Typ.
0.15
400
100
120
300
= -40 to 85 °C,
50
50
A
Max.
± 10
0.4
2.4
2.4
= 25 °C)
25
7
Max.
150
30
30
Unit
Kbps
Kbps
Kbps
KΩ
Unit
V/µs
V/µs
V/µs
µA
V
V
V
V
V
V
µs
ns
ns
ns
ns
ns
ns
ns
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