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ST491ACN Datasheet(PDF) 8 Page - STMicroelectronics

Part # ST491ACN
Description  Low power high speed RS-485/RS-422 transceiver
PDF  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST491ACN Datasheet(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
ST491A
8/17
Table 9.
Receiver switching characteristics
(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are
referred to TA=25°C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
tPLH
tPHL
Propagation delay input
to output
CL = 15pF, (Figure 2., Figure 4.)19
30
ns
tSKD
|tPLH - tPHL| Receiver
output skew
CL = 15pF, (Figure 2., Figure 4.)1
3
ns
tTLH
tTHL
Rise or fall time
CL = 15pF, (Figure 2., Figure 4.)6
ns
tPZL
Output enable time
CRL= 15pF, S1 Closed
6
12
ns
tPZH
Output enable time
CRL= 15pF, S2 Closed
7
12
ns
tPHZ
Output disable time
CRL= 15pF, S2 Closed
6
12
ns
tPLZ
Output disable time
CRL= 15pF, S1 Closed
6
12
ns



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