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DS2148T 数据表(PDF) 63 Page - Dallas Semiconductor

部件名 DS2148T
功能描述  5V E1/T1/J1 Line Interface
PDF  75 Pages
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制造商  DALLAS [Dallas Semiconductor]
网页  https://www.maximintegrated.com/en.html
标志 DALLAS - Dallas Semiconductor

DS2148T 数据表(HTML) 63 Page - Dallas Semiconductor

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12.
AC CHARACTERISTICS
AC CHARACTERISTICS—MULTIPLEXED PARALLEL PORT
(BIS1 = 0, BIS0 = 0)
(-40
°C to +85°C; VDD = 5.0V ± 5%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Cycle Time
tCYC
200
ns
Pulse Width, DS Low or RD*
High
PWEL
100
ns
Pulse Width, DS High or RD*
Low
PWEH
100
ns
Input Rise/Fall times
tR, tF
20
ns
R/W* Hold Time
tRWH
10
ns
R/W* Setup Time Before DS
High
tRWS
50
ns
CS* Setup Time Before DS,
WR* or RD* Active
tCS
20
ns
CS* Hold Time
tCH
0
ns
Read Data Hold Time
tDHR
10
50
ns
Write Data Hold Time
tDHW
0
ns
Muxed Address Valid to AS
or ALE Fall
tASL
15
ns
Muxed Address Hold Time
tAHL
10
ns
Delay Time DS, WR* or RD*
to AS or ALE Rise
tASD
20
ns
Pulse Width AS or ALE High
PWASH
30
ns
Delay Time, AS or ALE to
DS, WR* or RD*
tASED
10
ns
Output Data Delay Time
From DS or RD*
tDDR
20
80
ns
Data Setup Time
tDSW
50
ns
See Figure 12-1, Figure 12-2, Figure 12-3



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