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IDT72V8980 Datasheet(PDF) 10 Page - Integrated Device Technology

Part No. IDT72V8980
Description  3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT72V8980 Datasheet(HTML) 10 Page - Integrated Device Technology

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10
Commercial Temperature Range
IDT72V8980 3.3V Time Slot Interchange
Digital Switch 256 x 256
CS
DS
5705 drw1
5
R/
W
A5-A0
D7-D0
DTA
tCSS
tRWS
tADS
tAKD
tRDS
tSWD
tFWS
tCSH
tRWH
tADH
tAKH
tRDZ
tDHT
Figure 11. Processor Bus
Symbol
Characteristics
Min.
Typ.(2)
Max.
Unit
Test Conditions
tCSS
Chip Select Setup Time
0

ns
tRWS
Read/WriteSetupTime
5

ns
tADS
Address Setup Time
5

ns
tAKD
Acknowledgment Delay Fast
40
60
ns
C
L = 150pF
tAKD
Acknowledgment Delay Slow

4.5
cycles
C4i cycles(4)
tFWS
Fast Write Data Setup Time
10

ns
tSWD
Slow Write Data Delay
2.0
1.7
cycles
C4i cycles
tRDS
Read Data Setup Time

0.5
cycles
C4i cycles, C
L = 150pF
tDHT
Data Hold Time Read
20
50
75
ns
R
L = 1K
(3), C
L = 150pF
tDHT
Data Hold Time Write
10

ns
tRDZ
Read Data to High Impedance
10
50
ns
R
L = 1K
(3), C
L = 150pF
tCSH
Chip Select Hold Time
0
5
ns
tRWH
Read/Write Hold Time
0
5
ns
tADH
Address Hold Time
0
5
ns
tAKH
Acknowledgment Hold Time
20
40
ns
R
L = 1K
(3), C
L = 150pF
NOTE:
1. Timing is over recommended temperature and power supply voltages.
2. Typical figures are at 25
°C and are for design aid only; not guaranteed and not subject to production testing.
3. High Impedance is measured by pulling to the appropriate rail with R
L, with timing corrected to cancel time taken to discharge CL.
4. Processor accesses are dependent on the
C4i clock, and so some things are expressed as multiples of the C4i.
AC ELECTRICAL CHARACTERISTICS (1)
 PROCESSOR BUS


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