MT8889C/MT8889C-1
AC Electrical Characteristics
†
- Call Progress -
Voltages are with respect to ground (V
SS
), unless otherwise stated.
Characteristics
1
2
3
4
Accept Bandwidth
Lower freq. (REJECT)
Upper freq. (REJECT)
Call progress tone detect level (total
power)
Sym
f
A
f
LR
f
HR
-30
Min
310
290
540
Typ
‡
Max
500
Units
Hz
Hz
Hz
dBm
Conditions
@ -25 dBm,
Note 9
@ -25 dBm
@ -25 dBm
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, V
DD
=5V, and for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics
†
- DTMF Reception -
Typical DTMF tone accept and reject requirements.
values are user selectable as per Figures 5, 6 and 7.
Actual
Characteristics
1
2
3
4
Minimum tone accept duration
Maximum tone reject duration
Minimum interdigit pause duration
Maximum tone drop-out duration
Sym
t
REC
t
REC
t
ID
t
OD
Min
Typ
‡
40
20
40
20
Max
Units
ms
ms
ms
ms
Conditions
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, V
DD
=5V, and for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics
† - Voltages are with respect to ground (V
SS
), unless otherwise stated.
Characteristics
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
X
T
A
L
T
O
N
E
O
U
T
T
O
N
E
I
N
Sym
t
DP
t
DA
t
PStb3
t
PStRX
t
BST
t
PS
t
BSTE
t
PSE
V
HOUT
V
LOUT
dB
P
THD
Min
3
0.5
Typ
‡
11
4
13
8
Max
14
8.5
Units
ms
ms
µs
µs
Conditions
Note 11
Note 11
See Figure 7
See Figure 7
DTMF mode
DTMF mode
Call Progress mode
Call Progress mode
R
L
=10kΩ
R
L
=10kΩ
R
L
=10kΩ
25 kHz Bandwidth
R
L
=10kΩ
Tone present detect time
Tone absent detect time
Delay St to b3
Delay St to RX
0
-RX
3
Tone burst duration
Tone pause duration
Tone burst duration (extended)
Tone pause duration (extended)
High group output level
Low group output level
Pre-emphasis
Output distortion (Single Tone)
50
50
100
100
-6.1
-8.1
0
2
-35
52
52
104
104
-2.1
-4.1
3
ms
ms
ms
ms
dBm
dBm
dB
dB
Frequency deviation
Output load resistance
Crystal/clock frequency
Clock input rise and fall time
Clock input duty cycle
Capacitive load (OSC2)
f
D
R
LT
f
C
t
CLRF
DC
CL
C
LO
40
10
3.5759
±0.7
±1.5
50
%
kΩ
MHz
ns
%
pF
f
C
=3.579545 MHz
3.5795
3.5831
110
Ext. clock
Ext. clock
50
60
30
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25°C and for design aid only: not guaranteed and not subject to production testing.
4-121
MITEL [ MITEL NETWORKS CORPORATION ]
