MT8979 ISO-CMOS
AC Electrical Characteristics† - XCtl, XS and E8Ko (Figures 22, 23 and 24)
‡
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
50 pF load
1
2
3
4
5
6
7
External Control Delay
External Status Setup Time
External Status Hold Time
E8Ko Output Delay
tXCD
tXSS
tXSH
t8OD
t8OL
t8OH
t8OT
100
ns
ns
ns
ns
µs
µs
ns
50
50
150
50 pF load
50 pF load
50 pF load
50 pF load
E8Ko Output Low Width
E8Ko Output High Width
E8Ko Output Transition Time
62.5
62.5
20
† Characteristics are for clocked operation over the ranges of recommended operating temperature and supply voltage.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
ST-BUS Bit Cell Boundary Between
Bit 3 Channel 17 and Bit 2 Channel 17
VIH
VIL
VIH
VIL
C2i
XS
F0i
VOH
VOL
VIH
VIL
XCtl
tXCD
tXSS
tXSH
Figure 22 - XCtl Timing
Figure 23 - XS Timing
Timeslot 0
Bit 4
Timeslot 16
Bit 4
Timeslot 0
Bit 4
Received
CEPT Bits
•
• •
• • •
VIH
E2i
VIL
t8OD
t8OD
t8OD
VOH
VOL
E8Ko
t8OH
t8OL
t8OT
t8OT
t8OT
Figure 24 - E8Ko Timing
4-182
MITEL [ MITEL NETWORKS CORPORATION ]
