1575PCI Ver la hoja de datos (PDF) - Holt Integrated Circuits
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1575PCI Datasheet PDF : 12 Pages
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HI-1575
AC ELECTRICAL CHARACTERISTICS
VDD = 3.3 V, GND = 0V, TA =Operating Temperature Range (unless otherwise specified)
PARAMETER
SYMBOL TEST CONDITIONS
TRANSMITTER (Measured at Point “AD” in Figure 12)
RiseTtime
tr
Fall Time
tf
RECEIVER (See figures 8 and 9)
Sync Transition Span
tR1
Short Data Transition Span
tR2
Long Data Transition Span
tR3
Delay Mid-Parity to Flag Set
tFH
Flag Setup Time to Read
tFR
Flag Reset Delay
tRF
DATA BUS TIMING - WRITE (See figure 10)
Strobe STRB Pulse Width
tSTR
REG Write Setup Time
tRWS
REG Write Hold Time
tRWH
Databus / SYNC Write Setup Time
tDWS
Databus / SYNC Write Hold Time
tDWH
CHA/CHB Write Setup Time
tCHWS
CHA/CHB Write Hold Time
tCHWH
R/W Write Setup Time
tRWWS
R/W Write Hold Time
tRWWH
DATA BUS TIMING - READ (See figure 11)
Strobe STRB Pulse Width
tSTR
REG Read Setup Time
tRRS
REG Read Hold Time
tRRH
Data Read to Databus Valid
tDRV
Data Read to Databus Tri-state
tDRT
CHA/CHB Read Setup Time
tCHRS
CHA/CHB Read Hold Time
tCHRH
R/W Read Setup Time
tRWRS
R/W Read Hold Time
tRWRH
35 ohm load
35 ohm load
MIN
100
100
0
50
50
10
50
10
50
10
50
10
50
50
10
0
50
10
50
10
TYP
1500
500
1000
MAX UNITS
300
ns
300
ns
ns
ns
ns
2500
ns
ns
60
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
60
ns
60
ns
ns
ns
ns
ns
Point “AD“
HI-1575 TRANSMITTER
BUSA/B
BUSA/B
1:2.5
55 W
Isolation
55 W
Transformer
35 W
55 W
2.5:1
HI-1575 RECEIVER
35 W
55 W Isolation
Transformer
FIGURE 12. DIRECT COUPLED TEST CIRCUITS
Point “AD“
HOLT INTEGRATED CIRCUITS
9
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