MAX14770E(2010) Просмотр технического описания (PDF) - Maxim Integrated
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MAX14770E Datasheet PDF : 16 Pages
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High-ESD Profibus RS-485 Transceiver
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V Q10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V, TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DRIVER SWITCHING CHARACTERISTICS
Driver Propagation
Delay
tDPLH
tDPHL
RL = 54I, CL = 50pF; Figures 3 and 4
MIN TYP MAX
28
Differential Driver
Output Skew |tDPLH
tDSKEW RL = 54I, CL = 50pF; Figures 3 and 4
1.2
- tDPHL|
UNITS
ns
ns
Driver Output
Transition Skew
|tt(MLH)|, |tt(MHL)|
tTSKEW RL = 54I, CL = 50pF; Figures 3 and 5
2
ns
Driver Differential
Output Rise or Fall
Time
tLH, tHL RL = 54I, CL = 50pF; Figures 3 and 4
15
ns
Maximum Data Rate
20
Mbps
Driver Enable to
Output High
tDZH
RL = 500I, CL = 50pF; Figure 6
50
ns
Driver Enable to
Output Low
tDZL
RL = 500I, CL = 50pF; Figure 7
50
ns
Driver Disable Time
from Low
tDLZ
RL = 500I, CL = 50pF; Figure 7
40
ns
Driver Disable Time
from High
tDHZ
RL = 500I, CL = 50pF, Figure 6
40
ns
Driver Enable Skew
Time
|tZL - tZH| RL = 500I, CL = 50pF; Figures 6 and 7
8
ns
Driver Disable Skew
Time
|tLZ - tHZ| RL = 500I, CL = 50pF; Figures 6 and 7
8
ns
Driver Enable from
Shutdown to Output
High
tDZL(SHDN) RL = 500I, CL = 50pF; Figure 7 (Note 6)
100
Fs
Driver Enable from
Shutdown to Output
Low
tDZH(SHDN) RL = 500I, CL = 50pF; Figure 6 (Note 6)
100
Fs
Time to Shutdown
tSHDN
(Note 6)
RECEIVER SWITCHING CHARACTERISTICS
Receiver Propagation
Delay
tRPLH
tRPHL
CL = 15pF; Figures 8 and 9 (Note 7)
Receiver Output
Skew
tRSKEW CL = 15pF; Figures 8 and 9 (Notes 7, 8)
50
800
ns
28
ns
2
ns
4 _______________________________________________________________________________________
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