MT8888CS Zarlink Semiconductor, Inc., MT8888CS Datasheet - Page 14

• Manufacturer Part Number: MT8888CS
• Description: DTMF Transceiver, 3.58MHz, 5V, CMOS, 20-SOIC
• Manufacturer: Zarlink Semiconductor, Inc.

MT8888C
AC Electrical Characteristics
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25
AC Electrical Characteristics
values are user selectable as per Figures 5, 6 and 7.
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25
AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25
14
10
11
12
13
14
15
16
17
18
19
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
Accept Bandwidth
Lower freq. (REJECT)
Upper freq. (REJECT)
Call progress tone detect level (total
power)
Minimum tone accept duration
Maximum tone reject duration
Minimum interdigit pause duration
Maximum tone drop-out duration
O
O
O
T
N
E
N
T
N
E
U
T
X
T
A
L
I
Tone present detect time
Tone absent detect time
Delay St to b3
Delay St to RX
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)
Frequency deviation
Output load resistance
Crystal/clock frequency
Clock input rise and fall time
Clock input duty cycle
Capacitive load (OSC2)
Characteristics
Characteristics
Characteristics
°
°
°
C, V
C, V
C and for design aid only: not guaranteed and not subject to production testing.
DD
DD
0
-RX
=5V, and for design aid only: not guaranteed and not subject to production testing
=5V, and for design aid only: not guaranteed and not subject to production testing
3
†
†
† - Voltages are with respect to ground (V
- Call Progress -
- DTMF Reception -
V
V
t
t
DC
t
t
Sym
PStRX
THD
PStb3
t
BSTE
CLRF
C
dB
t
HOUT
R
LOUT
t
t
BST
t
PSE
DP
DA
PS
f
f
D
C
LO
LT
CL
P
Sym
Sym
t
t
f
t
f
REC
REC
t
HR
f
LR
DO
ID
A
3.5759 3.5795 3.5831
Min
100
100
-6.1
-8.1
0.5
50
50
10
40
3
0
Voltages are with respect to ground (V
Min
310
Min
-30
Typical DTMF tone accept and reject requirements. Actual
Typ
±0.7
-35
11
13
50
4
8
2
Typ
Typ
290
540
40
20
40
20
‡
SS
‡
‡
), unless otherwise stated.
Max
±1.5
-2.1
-4.1
104
104
110
8.5
14
52
52
50
60
30
Max
Max
500
3
Units
dBm
dBm
MHz
Units
Units
dBm
ms
ms
ms
ms
ms
ms
kΩ
dB
dB
pF
µs
µs
ns
%
%
ms
ms
ms
ms
Hz
Hz
Hz
SS
Note 11
Note 11
See Figure 7
See Figure 7
DTMF mode
DTMF mode
Call Progress mode
Call Progress mode
R
R
R
25 kHz Bandwidth
R
f
Ext. clock
Ext. clock
), unless otherwise stated.
C
@ -25 dBm,
Note 9
@ -25 dBm
@ -25 dBm
L
L
L
L
=3.579545 MHz
=10kΩ
=10kΩ
=10kΩ
=10kΩ
Conditions
Conditions
Conditions