ST485BD STMicroelectronics, ST485BD Datasheet - Page 8

• Manufacturer Part Number: ST485BD
• Description: IC TXRX RS485/422 LP SO-8
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST485BD

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
V
to T
Receiver switching characteristics
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
Test conditions
to T
MAX
L1
L1
and
and
, 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