MT8972B Mitel Networks Corporation, MT8972B Datasheet - Page 18

• Manufacturer Part Number: MT8972B
• Description: (MT8971B) ISO2-CMOS ST-BUS FAMILY Digital Subscriber Interface Circuit Digital Network Interface Circuit
• Manufacturer: Mitel Networks Corporation

MT8971B/72B
† Timing is over recommended temperature & power supply voltage ranges.
* Typical figures are at 25°C, for design aid only: not guaranteed and not subject to production testing.
† Timing is over recommended temperature & power supply voltage ranges.
* Typical figures are at 25°C, for design aid only: not guaranteed and not subject to production testing.
Note 1: Attenuation measured from Master L
* Typical figures are at 25°C, for design aid only: not guaranteed and not subject to production testing.
9-124
AC Electrical Characteristics
AC Electrical Characteristics
Performance Characteristics of the MT8971B DSIC
Performance Characteristics of the MT8972B DNIC
3a
3b
CDSTo
CDSTi
1 Di/CDi Data Setup Time
2 Di/CDi Data Hold Time
3 Do Data Delay Time
4 CDo Data Delay Time
1
2
3
1
2
3
1
2
DSTo
DSTi
Stream
C4
Bit
Allowable Attenuation for Bit Error
Rate of 10
Line Length at 80 kbit/s
Line Length at 160 kbit/s -24 AWG
Allowable Attenuation for Bit Error
Rate of 10
Line Length at 80 kbit/s
Line Length at 160 kbit/s -24 AWG
DSTi/CDSTi Data Setup Time
DSTi/CDSTi Data Hold Time
DSTo/CDSTo Data Delay
DSTo/CDSTo High Z to Data Delay
2.0V
0.8V
2.0V
0.8V
2.4V
0.4V
Characteristics
Characteristics
Characteristics
Characteristics
-6
-6
(Note 1)
(Note 1)
-24 AWG
-26 AWG
-26 AWG
-24 AWG
-26 AWG
-26 AWG
Sym
t
t
t
t
†
†
DS
DH
RD
TD
Figure 19 - Data Timing For DN Mode
OUT
- Data Timing - DN Mode (Figure 19)
- Data Timing - MOD Mode (Figure 20)
t
t
ZTD
TD
to Slave L
Min
150
4.5
80 kbit/s
Sym
Sym
L
L
Sym
L
L
A
A
t
t
t
t
160
160
ZTD
80
80
RS
RH
TD
fb
fb
Typ*
100
100
IN
Min
Min
at 3/4baud frequency.
Min
0
0
30
50
Max Min
Typ*
Typ*
Bit Cell
3.0
2.2
3.0
2.2
5.0
3.4
4.0
3.0
30
40
Typ*
100
150
2.5
160 kbit/s
Max
Max
25
33
Max
120
140
Typ*
100
100
t
RS
Units
Units
km
km
km
km
dB
Max
dB
Units
ns
ns
ns
ns
t
RH
Units
SNR 16.5dB
bandlimited noise)
attenuation -
attenuation - 10.0 dB/km
attenuation -
attenuation - 11.5 dB/km
SNR 16.5dB
bandlimited noise)
attenuation -
attenuation - 10.0 dB/km
attenuation -
attenuation - 11.5 dB/km
ns
µs
ns
ns
C
C
L
L
=40pF
=40pF
Test Conditions
Test Conditions
Test Conditions
C
C
L
L
=40pF
=40pF
Conditions
t
TD
Test
6.9 dB/km
8.0 dB/km
6.9 dB/km
8.0 dB/km
(300kHz
(300kHz