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ST485BD Folha de dados(PDF) 7 Page - STMicroelectronics

Nome de Peças ST485BD
Descrição Electrónicos  Low power RS-485/RS-422 transceiver
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST485BD Folha de dados(HTML) 7 Page - STMicroelectronics

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ST485
Electrical characteristics
7/19
4.1
Driver switching characteristics
VCC = 5V ± 5%, TA = TMIN to TMAX , unless otherwise specified. Typical values are referred
to TA = 25°C
ICC
No Load Supply Current
(2)
VRE = 0V or VCC
VDE = VCC
VDE = 0V
400
300
900
500
900
500
µA
µA
IOSD1
Driver Short-Circuit
Current, VO=High
VO = -7 to 12V
(3)
35
250
35
250
mA
IOSD2
Driver Short-Circuit
Current, VO=Low
VO = -7 to 12V
(3)
35
250
35
250
mA
IOSR
Receiver Short-Circuit
Current
VO = 0V to VCC
795
7
95
mA
1.
All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device
ground unless specified.
2.
Supply current specification is valid for loaded transmitters when VDE = 0V
3.
Applies to peak current. See typical Operating Characteristics.
Table 5.
DC Electrical characteristics
Symbol
Parameter
Test conditions (1)
Value
Unit
-40 to 85 °C
-55 to 125 °C
Min
Typ
Max
Min
Max
Table 6.
Driver switching characteristics
Symbol
Parameter
Test conditions (1)
Value
Unit
-40 to 85 °C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
tPLH
tPHL
Propagation Delay
Input to Output
RDIFF = 54ΩCL1 = CL2 = 100pF
(See
Figure 4. and Figure 6.)
10
30
60
70
ns
tSK
Output Skew to Output
RDIFF = 54ΩCL1 = CL2 = 100pF
(See
Figure 4. and Figure 6.)
510
10
ns
tTLH
tTHL
Rise or Fall Time
RDIFF = 54ΩCL1 = CL2 = 100pF
(See
Figure 4. and Figure 6.)
315
40
3
45
ns
tPZH
Output Enable Time
CL = 100pFS2 = Closed
(See
Figure 5. and Figure 7.)
70
90
90
ns
tPZL
Output Enable Time
CL = 100pFS1 = Closed
(See
Figure 5. and Figure 7.)
70
90
90
ns
tPLZ
Output Disable Time
CL = 15pFS1 = Closed
(See
Figure 5. and Figure 7.)
70
90
90
ns
tPHZ
Output Disable Time
CL = 15pFS2 = Closed
(See
Figure 5. and Figure 7.)
70
90
90
ns
1.
All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device
ground unless specified.


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