ST485BDR STMicroelectronics, ST485BDR Datasheet - Page 7
![IC TXRX 5V RS485/422 LP 8-SOIC](/photos/1/38/13851/497-8-soic_sml.jpg)
ST485BDR
Manufacturer Part Number
ST485BDR
Description
IC TXRX 5V RS485/422 LP 8-SOIC
Manufacturer
STMicroelectronics
Type
Transceiverr
Datasheet
1.ST485CN.pdf
(19 pages)
Specifications of ST485BDR
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)
Maximum Operating Temperature
85 C
Mounting Style
SMD/SMT
Data Rate
2.5 Mbps
Interface
RS-422 or RS-485
Minimum Operating Temperature
- 40 C
Supply Current
500 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-3733-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST485BDR
Manufacturer:
STM
Quantity:
3 127
Part Number:
ST485BDR
Manufacturer:
ST
Quantity:
20 000
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
CC
Parameter
A
Parameter
= 5 V ± 5 %, T
O
O
= 25 °C
=High
=Low
A
R
(See
R
(See
R
(See
C
(See
C
(See
C
(See
C
(See
= 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
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
MAX
and
and
and
and
and
and
and
L1
L1
L1
CC
= C
= C
= C
(3)
(3)
, unless otherwise specified. Typical values are referred
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
7/19