ST485B STMICROELECTRONICS [STMicroelectronics], ST485B Datasheet - Page 7

• Manufacturer Part Number: ST485B
• Description: Low power RS-485/RS-422 transceiver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 6.
1. All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device
2. Supply current specification is valid for loaded transmitters when V
3. Applies to peak current. See typical Operating Characteristics.
Table 7.
1. All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device
Symbol
Symbol
I
I
I
OSD1
OSD2
t
t
OSR
t
t
t
t
t
t
ground unless specified.
ground unless specified.
PLH
t
PZH
PHZ
TLH
THL
PZL
PLZ
PHL
SK
Driver short-circuit
current, V
Driver short-circuit
current, V
Receiver short-circuit
current
Propagation delay
input to output
Output skew to output
Rise or fall time
Output enable time
Output enable time
Output disable time
Output disable time
DC electrical characteristics (continued)
V
to T
Driver switching characteristics
V
to T
CC
CC
Parameter
A
A
Parameter
= 5 V ± 5 %, T
= 5 V ± 5 %, T
= 25 °C)
O
O
= 25 °C
=High
=Low
A
A
R
(See
R
(See
R
(See
C
(See
C
(See
C
(See
C
(See
= T
= T
DIFF
DIFF
DIFF
L
L
L
L
V
V
V
= 100pF, S2 = Closed
= 100pF, S1 = Closed
= 15pF, S1 = Closed
= 15pF, S2 = Closed
O
O
O
MIN
MIN
Figure 4
Figure 4
Figure 4
Figure 5
Figure 5
Figure 5
Figure 5
= 54Ω , C
= 54Ω , C
= 54Ω , C
= -7 to 12V
= -7 to 12V
= 0V to V
Test conditions
Test conditions
to T
to T
MAX
MAX
and
and
and
and
and
and
and
L1
L1
L1
CC
= C
= C
= C
, unless otherwise specified. Typical values are referred
, unless otherwise specified. Typical values are referred
(3)
(3)
Figure
Figure
Figure
Figure
Figure
Figure
Figure
L2
L2
L2
= 100pF
= 100pF
= 100pF
(1)
6)
6)
6)
7)
7)
7)
7)
(1)
DE
= 0V
Min.
35
35
Min.
7
10
3
-40 to 85 °C
-40 to 85 °C
Typ.
Typ. Max.
30
15
70
70
70
70
5
Value
Max.
Value
250
250
95
60
10
40
90
90
90
90
-55 to 125 °C
-55 to 125°C
Min.
Min.
35
35
7
3
Max.
Max.
250
250
95
70
10
45
90
90
90
90
Unit
Unit
mA
mA
mA
ns
ns
ns
ns
ns
ns
ns
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