ST485B STMICROELECTRONICS [STMicroelectronics], ST485B Datasheet - Page 8

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

Table 8.
1. All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device
8/19
Symbol
f
t
t
t
t
t
t
ground unless specified
t
MAX
PLH
SKD
PZH
PHZ
PZL
PLZ
PHL
Propagation delay input
to output
Differential receiver
skew
Output enable time
Output enable time
Output disable time
Output disable time
Maximum data rate
Receiver switching characteristics
V
to T
CC
A
Parameter
= 5 V ± 5%, T
= 25 °C)
A
= T
R
(See
R
(See
C
(See Fig. 2 and
C
(See Fig. 2 and
C
(See Fig. 2 and
C
(See Fig. 2 and
DIFF
DIFF
RL
RL
RL
RL
MIN
= 15pF, S1 = Closed
= 15pF, S2 = Closed
= 15pF, S1 = Closed
= 15pF, S2 = Closed
Figure 4
Figure 4
=54Ω , C
=54Ω, C
to T
Test conditions
MAX
L1
and
and
L1
, unless otherwise specified. Typical values are referred
Figure
Figure
Figure
Figure
= C
= C
Figure
Figure
L2
L2
= 100pF
= 100pF
9)
9)
9)
9)
(1)
8)
8)
Min.
2.5
20
-40 to 85 °C
Typ.
130
13
20
20
20
20
Value
Max.
210
50
50
50
50
-55 to 125°C
Min.
2.5
Max.
230
56
56
56
56
Mbps
Unit
ns
ns
ns
ns
ns
ns