mt8981dl Mitel, mt8981dl Datasheet - Page 11

• Manufacturer Part Number: mt8981dl
• Description: Iso-cmos St-bus ?amily Digital Switch
• Manufacturer: Mitel

AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltages
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
* Contents of Connection Memory are not lost if the clock stops, however, ST-BUS outputs go into the high impedance state.
NB: Frame Pulse is repeated every 512 cycles of C4i.
1
2
3
4
5
6
7
C4i
F0i
BIT
CELLS
C4i
F0i
N
P
U
T
S
I
2.0V
0.8V
2.0V
0.8V
Clock Period*
Clock Width High
Clock Width Low
Clock Transition Time
Frame Pulse SetupTime
Frame Pulse Hold Time
Frame Pulse Width
Characteristics
t
FPH
t
CL
Channel 31
Bit o
†
t
- Clock Timing (Figures 12 and 13)
CLK
Figure 12 - Frame Alignment
Figure 13 - Clock Timing
Sym
t
t
t
t
t
t
FPW
t
t
CLK
CTT
FPS
t
FPH
CH
FPS
CL
CTT
t
CHL
0.020
Min
220
110
95
20
t
FPW
Typ
244
122
244
122
20
‡
t
CTT
Max
300
150
150
200
50
ISO-CMOS
t
FPH
Units
ns
ns
ns
ns
ns
µs
ns
Channel 0
Bit 7
Test Conditions
t
CH
MT8981D
t
FPS
2-27