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STC485E Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part No. STC485E
Description  ±15kV ESD-Protected,Slew-Rate-Limited, Fail-Safe,True RS-485 Transceivers
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Maker  ETC1 [List of Unclassifed Manufacturers]
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STC485E Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers

 
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STC485E Datasheet Rev.0.1, Dec.2005
Page    of  11
STC International Limited                          http://www.mcu-memory.com
Switching Characteristics
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
tDPLH
250
720
1000
Driver Input-to-Output
tDPHL
Figures 4 and 6, RDIFF = 54?,
CL1 = CL2 = 100pF
250
720
1000
ns
Driver Output Skew
| tDPLH - tDPHL |
tDSKEW
Figures 4 and 6, RDIFF = 54?,
CL1 = CL2 = 100pF
-3
±100
ns
Driver Rise or Fall Time
tDR, tDF
Figures 4 and 6, RDIFF = 54?,
CL1 = CL2 = 100pF
200
530
750
ns
Maximum Data Rate
fMAX
500
kbps
Driver Enable to Output High
tDZH
Figures 5 and 7, CL = 100pF, S2 closed
2500
ns
Driver Enable to Output Low
tDZL
Figures 5 and 7, CL = 100pF, S1 closed
2500
ns
Driver Disable Time from Low
tDLZ
Figures 5 and 7, CL = 15pF, S1 closed
100
ns
Driver Disable Time from High
tDHZ
Figures 5 and 7, CL = 15pF, S2 closed
100
ns
Receiver Input to Output
tRPLH,
tRPHL
Figures 11 and 13;
| VID | =?2.0V;
rise and fall time of VID =?15ns
127
200
ns
| tRPLH - tRPHL | Differential
Receiver Skew
tRSKD
Figures 8 and 10;
| VID | =?2.0V;
rise and fall time of VID =?15ns
3
3
±30
ns
Receiver Enable to Output Low
tRZL
Figures 3 and 9, CL = 100pF, S1 closed
20
50
ns
Receiver Enable to Output High
tRZH
Figures 3 and 9, CL = 100pF, S2 closed
20
50
ns
Receiver Disable Time from Low
tRLZ
Figures 3 and 9, CL = 100pF, S1 closed
20
50
ns
Receiver Disable Time from
High
tRHZ
Figures 3 and 9, CL = 100pF, S2 closed
20
50
ns
Time to Shutdown
tSHDN
(Note 4)
50
200
600
ns
Driver Enable from
Shutdown-to-Output High
tDZH(SHDN)
Figures 5 and 7, CL = 15pF, S2 closed
4500
ns
Driver Enable from
Shutdown-to-Output Low
tDZL(SHDN)
Figures 5 and 7, CL = 15pF, S1 closed
4500
ns
Receiver Enable from
Shutdown-to-Output High
tRZH(SHDN)
Figures 3 and 9, CL = 100pF, S2 closed
3500
ns
Receiver Enable from
Shutdown-to-Output Low
tRZL(SHDN)
Figures 3 and 9, CL = 100pF, S1 closed
3500
ns


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