MT8888C View Datasheet(PDF) - Mitel Networks
Part Name
Description
Manufacturer
MT8888C Datasheet PDF : 16 Pages
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MT8888C/MT8888C-1
AC Electrical Characteristics†- Call Progress - Voltages are with respect to ground (VSS), unless otherwise stated.
Characteristics
Sym Min Typ‡ Max Units
Conditions
1 Accept Bandwidth
fA
310
500 Hz @ -25 dBm,
Note 9
2 Lower freq. (REJECT)
fLR
290
Hz @ -25 dBm
3 Upper freq. (REJECT)
fHR
540
Hz @ -25 dBm
4 Call progress tone detect level (total
-30
power)
dBm
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, VDD=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. Actual
values are user selectable as per Figures 5, 6 and 7.
Characteristics
Sym Min Typ‡ Max Units
Conditions
1 Minimum tone accept duration
tREC
40
ms
2 Maximum tone reject duration
tREC
20
ms
3 Minimum interdigit pause duration
tID
40
ms
4 Maximum tone drop-out duration
tOD
20
ms
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, VDD=5V, and for design aid only: not guaranteed and not subject to production testing
AC Electrical Characteristics† - Voltages are with respect to ground (VSS), unless otherwise stated.
Characteristics
Sym Min Typ‡ Max Units
Conditions
1 T Tone present detect time
O
2 N Tone absent detect time
3 E Delay St to b3
4
I
N
Delay St to RX0-RX3
tDP
3
11
14
ms
tDA
0.5
4
8.5
ms
tPStb3
13
µs
tPStRX
8
µs
5
Tone burst duration
tBST
50
52
ms
6
Tone pause duration
tPS
50
52
ms
7
Tone burst duration (extended)
tBSTE
100
104 ms
8 T Tone pause duration (extended) tPSE 100
O
9 N High group output level
VHOUT -6.1
10 E Low group output level
VLOUT -8.1
104 ms
-2.1 dBm
-4.1 dBm
11 O Pre-emphasis
U
dBP
0
2
3
dB
12 T Output distortion (Single Tone)
THD
-35
dB
13
14
Frequency deviation
fD
±0.7 ±1.5
%
15
Output load resistance
RLT
10
50
kΩ
16
Crystal/clock frequency
17
X
T
Clock input rise and fall time
fC
tCLRF
3.5759 3.5795 3.5831 MHz
110
ns
18 A Clock input duty cycle
L
DCCL
40
50
60
%
19
Capacitive load (OSC2)
CLO
30
pF
† 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.
Note 11
Note 11
See Figure 7
See Figure 7
DTMF mode
DTMF mode
Call Progress mode
Call Progress mode
RL=10kΩ
RL=10kΩ
RL=10kΩ
25 kHz Bandwidth
RL=10kΩ
fC=3.579545 MHz
Ext. clock
Ext. clock
4-104
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