MT8976 Mitel Networks Corporation, MT8976 Datasheet - Page 22

• 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.
Note 1: The parameters t
specifications.
4-50
1
2
3
4
5
6
7
8
Received DS1 Link
Bit Cells
Transmitted DS1 Link
C1.5i
TxA
or
TxB
Bit Cells
RxA
or
RxB
E1.5i
RxD
Transmit Steering Delay
Transmit Steering Transition Time
Received Steering Setup Time
Received Steering Hold Time
Received Data Setup Time
Received Data Hold Time
C1.5i Period
C1.5i Pulse Width High or Low
2.0V
0.8V
2.4V
0.4V
2.0V
2.0V
0.8V
0.8V
2.0V
0.8V
ISO-CMOS
Parameters
RDS
and t
Figure 20 - Receive Timing for DS1 Link (see Note 1)
RDH
t
are related to device functionality. Network constraints may require tighter tolerances than the device
TST
Figure 19 - Transmit Timing for DS1 Link
†
- DS1 Link Timing (Figures 19 & 20)
t
TSD
t
t
WC1.5
t
Sym
WC1.5
t
t
t
t
t
PC1.5
t
t
RSS
RSH
RDS
RDH
TSD
TST
RSS
Bit Cell
t
RDS
Min
500
250
-15
50
30
60
0
Bit Cell
t
PC1.5
Typ
648
324
t
RSH
‡
t
RDH
Max
150
800
30
t
TSD
t
Units
TST
ns
ns
ns
ns
ns
ns
ns
ns
150 pF Load
150 pF Load
See Note 1
See Note 1
t
PC1.5
Test Conditions
= 648 ns