MT8976 Mitel Networks Corporation, MT8976 Datasheet - Page 20

• Manufacturer Part Number: MT8976
• Description: ISO-CMOS ST-BUS FAMILY T1/ESF Framer Circuit
• Manufacturer: Mitel Networks Corporation

MT8976
AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltage ranges.
‡ Typical figures are at 25 C and are for design aid only; not guaranteed and not subject to production testing.
AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltage ranges.
‡ Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.
4-48
1
2
DS1 BIT CELLS FOR
RECEPTION
1
2
3
DSTo or
CSTo
DSTi,
CSTi0/CSTi1
C2i
E1.5i
E1.5i Clock Period
E1.5i Clock Width High or Low
Serial Output Delay
Serial Input Setup Time
Serial Input Hold Time
0.8V
2.0V
0.8V
2.4V
0.4V
2.0V
0.8V
2.0V
Characteristics
Characteristics
ISO-CMOS
Figure 14 - DS1 Receive Clock Timing
†
†
t
Figure 15 - ST-BUS Stream Timing
BIT CELL
SOD
- 2048 kbit/s ST-BUS Streams (Figure 15)
- Timing For DS1 Link Bit Cells (Figure 14)
t
t
t
PEC
Sym
PEC
WEC
Sym
t
t
t
SOD
SIH
SIS
t
SIS
Min
500
250
Min
Bit Cell Boundaries
15
50
Typ
648
324
Typ
‡
‡
t
SIH
Max
Max
125
t
WEC
Units
Units
ns
ns
ns
ns
ns
BIT CELL
t
PEC
150pF load
= 648 ns
Test Conditions
t
Test Conditions
SOD
t
WEC