IDT72V8980 Integrated Device Technology, IDT72V8980 Datasheet - Page 8

• Manufacturer Part Number: IDT72V8980
• Description: 3.3 Volt Time Slot Interchange Digital Switch 256 X 256
• Manufacturer: Integrated Device Technology

AC ELECTRICAL CHARACTERISTICS
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. Contents of Connection Memory are not lost if the clock stops, however, TX output go into the high impedance state.
IDT72V8980 3.3V Time Slot Interchange
Digital Switch 256 x 256
Bit Cells
Symbol
F0i
t
C4i
t
t
t
t
FPW
CLK
t
CTT
FPS
FPH
t
CH
CL
C4i
F0i
Characteristics
Clock Period
Clock Width High
Clock Width Low
Clock Transition Time
Frame Pulse Setup Time
Frame Pulse Hold Time
Frame Pulse Width
t
FPH
(3)
t
CL
Channel 31
Bit 0
t
CLK
t
Min.
t
110
Figure 5. Frame Alignment
FPS
Figure 6. Clock Timing




CTT
5
5
t
CHL
(1)
8
 CLOCK TIMING
Typ.
t
FPW
244
122
122
244
20
20
20
(2)
t
CTT
t
FPH
Max.
150
190
190




Channel 0
Bit 7
t
CH
Commercial Temperature Range
Unit
ns
ns
ns
ns
ns
ns
ns
t
FPS
5705 drw10
5705 drw09