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SP485 Datasheet(PDF) 5 Page - Shanghai Leiditech Electronic Technology Co., Ltd

Part # SP485
Description  RS-485 RS422 Transceiver
PDF  10 Pages
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Manufacturer  LEIDITECH [Shanghai Leiditech Electronic Technology Co., Ltd]
Direct Link  http://www.leiditech.com
Logo LEIDITECH - Shanghai Leiditech Electronic Technology Co., Ltd

SP485 Datasheet(HTML) 5 Page - Shanghai Leiditech Electronic Technology Co., Ltd

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Transmission characteristics
Unless otherwise specified, V DD = 5V 5% and Tamb = 25 °C
Features slope limiting
Drive input to
Output
tDPLH
RDIFF=54Ω，
CL1=CL2=100pF(2)
250
720
1000
ns
Drive input to
Output
tDPHL
RDIFF=54Ω，
CL1=CL2=100pF(2)
250
720
1000
ns
|tDPLH-tDPHL|
tDSKEW
RDIFF=54Ω，
CL1=CL2=100pF(2)
-3
±100
ns
Drive up and down
Time
tDR,tDF
RDIFF=54Ω，
CL1=CL2=100pF(2)
200
530
750
ns
Maximum data
transfer rate
fMAX
2000
kbps
Drive enable delay
tDZH
CL=100pF,S2 CLOSED(3)
2500
ns
Drive enable delay
tDZL
CL=100pF,S1 CLOSED(3)
2500
ns
Drive shutdown
delay
tDLZ
CL=15pF,S1 CLOSED(3)
100
ns
Drive shutdown
delay
tDHZ
CL=15pF,S2 CLOSED(3)
100
ns
Receiver input and
output
Delay
tRPLH
| VID|≥2.0V
Rise and fall time ≤ 15ns(4).
127
200
ns
Receiver input and
output
Delay
tRPHL
127
200
ns
|tRPLH-tRPHL|
tRSKD
| VID|≥2.0V
Rise and fall time ≤ 15ns(4).
3
±30
ns
Receiver enable
delay
tRZL
CL=100pF,S1 CLOSED(5)
20
50
ns
Receiver enable
delay
tRZH
CL=100pF,S2 CLOSED(5)
20
50
ns
Receiver shutdown
delay
tRLZ
CL=100pF,S1 CLOSED(5)
20
50
ns
Receiver shutdown
delay
tRHZ
CL=100pF,S2 CLOSED(5)
20
50
ns
Shutdown mode
enable time
tSHDN
50
200
600
ns
Drive wake delay
tDZH(SHDN) CL=15pF,S2 CLOSED(3)
4500
ns
Drive wake delay
tDZL(SHDN) CL=15pF,S1 CLOSED(3)
4500
ns
Receiver wake-up
delay
tRZH(SHDN) CL=100pF,S2 CLOSED(5)
3500
ns
Receiver wake-up
delay
tRZL(SHDN) CL=100pF,S1 CLOSED(5)
3500
ns
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SP485
www.leiditech.com
Rev 1.6 :01.01.2022
5/10



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