MT8910 Zarlink Semiconductor, MT8910 Datasheet - Page 24

• Manufacturer Part Number: MT8910
• Description: Digital Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

‡ Typical figures are at 25 C and are for design aid only: not guaranteed and not subject to production testing.
(
Note
† 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.
Notes:
DC Electrical Characteristics (continued)
AC Electrical Characteristics
1
) except OSC2
10
11
12
13
14
15
16
17
18
19
C4b
OSC2
1
2
3
4
8
9
OSC2 Clock Frequency
OSC2 Clock Duty Cycle
OSC2 Clock Transition Time
C4b Jitter (wrt OSC2)
O
U
P
U
S
T
T
1)
2)
3)
1)
2)
V
V
V
V
IH
IL
IH
IL
V
V
V
Output High Voltage
Output Low Voltage
OSC2 Output High Voltage
OSC2 Output Low Voltage
Differential Output Voltage
(L
Output Impedance
(L
Output Capacitance
(L
High Impedance Leakage
Supply Current
Bias
Ref
Bias
This is a specification on the maximum parallel capacitance to AC ground, connected directly to the pins. Higher
Not production tested.
capacitance is acceptable when placed in series with resistor networks such as the line termination impedance.
Absolute jitter on OSC2 must be less than 2.0ns RMS in order to maximize performance.
out+
out+
out+
In LT mode the C4b and OSC2 clocks must be externally frequency locked (i.e., f
External clock tolerance of 5 ppm in LT mode or 50 ppm in NT mode is required.
between the clocks is not critical.
Characteristics
Voltage
and/or V
, L
, L
Voltage
to L
out-
out-
Characteristics
out-
)
)
)
Ref
load
(1)
(1)
Figure 15 - External Clock Timing in LT Mode
t
MCF
†
- External Clock Timing (Ref. Figure 15)
1/t
t
Sym
t
t
OCH
MCF
OCT
t
JC
MCF
V
Sym
V
V
V
V
V
V
Z
/
V
I
I
I
C
Bias
OZ
DD
DD
t
Ref
OH
OH
OL
out
out
BL
OCT
OL
o
Min
-15
45
- Voltages are with respect to ground (V
Min
2.4
3.5
1
10.24
Typ
0.5AV
t
OCH
50
Typ
-1.9
6.4
0.5
65
10
t
‡
JC
‡
DD
Max
+15
55
10
Max
0.4
1.5
50
10
t
OCT
Units
MHz
t
ns
ns
%
Units
JC
(See Note 3)
M
V
mA
mA
pF
V
V
V
V
V
V
OSC2
pp
A
(see Notes 1, 2 & 3)
(see Note 3)
= 2.5 x f
Relative to AV
C
Relative to V
C
(see Note 2)
I
I
I
I
R
Measured by sourcing and
sinking 10 mA. Line Driver
active.
(see Note 1)
Line Drivers active and
unloaded.
Low Power Mode
SS
OH
OL
OH
OL
L
L
L
) unless otherwise stated.
=1 F minimum to AV
= 1 F minimum to AV
=40
= 5.0mA
=400 A
=10mA
=400 A
Test Conditions
Test Conditions
C4b
). The relative phase
MT8910-1
Bias
SS
9-25
SS
SS