st485ec STMicroelectronics, st485ec Datasheet - Page 7

• Manufacturer Part Number: st485ec
• Description: ?15 Kv Esd Protected, Low Power Rs-485/rs-422 Transceiver
• Manufacturer: STMicroelectronics

Table 7.
1. All currents into device pins are positive; all out of device pins are negative; all voltages are referenced to device ground
2. Supply current specification is valid for loaded transmitters when V
3. Applies to peak current. See typical Operating Characteristics.
Table 8.
1. All currents into device pins are positive; all out of device pins are negative; all voltages are referenced to device ground
Symbol
Symbol
I
I
OSD2
unless specified.
unless specified.
OSR
t
t
t
t
t
t
t
t
PLH
t
TLH
THL
PZH
PHZ
PZL
PLZ
PHL
SK
Driver short-circuit current,
V
Receiver short-circuit current V
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
O
DC electrical characteristics (continued) (V
otherwise specified. Typical values are referred to T
Driver switching characteristics (V
specified. Typical values are referred to T
=Low
Parameter
Parameter
R
(See
R
(See
R
(See
C
(See
C
(See
C
(See
C
(See
V
DIFF
DIFF
DIFF
L
L
L
L
O
O
= 100 pF, S2 = Closed
= 100 pF, S1 = Closed
= 15 pF, S1 = Closed
= 15 pF, S2 = Closed
= -7 to 12 V
= 0 V to V
Figure 4
Figure 4
Figure 4
Figure 5
Figure 5
Figure 5
Figure 5
= 54 Ω , C
= 54 Ω , C
= 54 Ω , C
Test conditions
Test conditions
CC
and
and
and
and
and
and
and
CC
L1
L1
L1
(3)
= 5 V ± 5 %, T
= C
= C
= C
A
Figure
Figure
Figure
Figure
Figure
Figure
Figure
= 25 °C)
DE
L2
L2
L2
CC
= 0 V
= 100 pF
= 100 pF
= 100 pF
6)
6)
6)
7)
7)
7)
7)
(1)
= 5 V ± 5 %, T
(1)
A
= 25 °C)
A
= T
MIN
Min.
35
to T
7
Min.
A
= T
MAX
MIN
Typ.
Typ.
, unless otherwise
25
15
35
25
25
35
2
to T
MAX
Max.
250
Max.
95
45
40
50
40
40
50
5
, unless
Unit
Unit
mA
mA
ns
ns
ns
ns
ns
ns
ns
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