IDT72V8985 Integrated Device Technology, IDT72V8985 Datasheet - Page 12

• Manufacturer Part Number: IDT72V8985
• Description: 3.3 Volt Time Slot Interchange Digital Switch 256 X 256
• Manufacturer: Integrated Device Technology

AC ELECTRICAL CHARACTERISTICS  SERIAL STREAM TIMING
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
IDT72V8985 3.3V Time Slot Interchange
Digital Switch 256 x 256
TX0-7
Symbol
TX0-7
CCO
t
t
t
t
t
t
t
t
RPW
OED
XCD
RSZ
ZRS
ZDO
TAZ
TZA
C4i
Figure 9. Serial Outputs and External Control
Characteristics
TX0-7 Delay - Active to High Z
TX0-7 Delay - High Z to Active
Output Driver Enable Delay
CCO Output Delay
Reset to High Z
High Z to Reset
High Z to Valid Data
Reset Pulse Width
Bit Cell Boundary
t
TZA
t
XCD
t
TAZ
(GCI)
(ST-BUS
Min.
100




5707 drw12
0
5
0
L
, with timing corrected to cancel time taken to discharge C

)
12
Typ.
TX
RS


30
45
45
40
30
32
TX0-7
(2)
ODE
t
RSZ
Max.




45
60
60
60
Figure 10. Output Driver Enable
t
RPW
Figure 11. Reset
t
ZRS
t
OED
cycles
Unit
Commercial Temperature Range
ns
ns
ns
ns
ns
ns
ns
L
.
t
ZDO
R
R
R
L
L
L
= 1KΩ
= 1KΩ
= 1KΩ
Test Conditions
C
C
C4i cycles
t
L
L
OED
= 150pF
= 150pF
(3)
(3)
(3)
, C
, C
, C
L
L
L
5707 drw13
= 150pF
= 150pF
= 150pF
5707 drw14