SC91650A SILAN [Silan Microelectronics Joint-stock], SC91650A Datasheet - Page 7

• Manufacturer Part Number: SC91650A
• Description: 13 MEMORY TONE / PULSE DIALER WITH REDIAL SAVE HANDFREE & HOLD FUNCTION
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

(continued)
Pre-digit Pause
Inter-digit Pause
Tone
Output Pin
DTMF Signal
Minimum tone duration Time
(note 3)
Minimum Intertone Pause Time
(note 3)
Note: 1. Vn: Input voltage of any keyboard scanning pin (Row group, Column group)
2 Distortion (dB) = 20log V
R1
R2
R3
R4
C1
C2
C3
V
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
L
,V
Silan
Semiconductors
H
DC Level
Sink Current
AC level
Load Resistor
Pre-emphasis
Distortion
: Row group and Column group signal , V1 V2… Vn: Harmonic signal (BW = 300Hz ~ 3500Hz
f1
f2
f3
f4
f5
f6
f7
1
2
Vdtmf
t
twist
Dist.
+V
Vdc
t
t
PDP
t
IDP
ITP
RI
Itl
TD
2
2
+V
3
M/B ratio=40:60
M/B ratio=33:66
Pulse rate=10pps
Pulse rate=20pps
V
Vdtmf=0.5V
Row group R
Dist. -23dB
V
Column-Row group
R
Auto redial
Auto redial
2
(fosc=3.579545MHz)
+…Vn
DD
DD
L
=5K
=2.0V~5.5V
=2.0~5.5 V,
1209
1336
1477
697
770
852
941
2
)
1/2
7
/ (V
L
L
=5K
2
+V
H
2
)
1/2
0.5V
1216
1332
1472
130
0.2
699
766
848
948
5
1
--
--
--
--
--
--
--
--
--
DD
800
500
155
100
106
-30
40
33
91
91
REV: 1.0
--
--
--
2
0.7V
180
-23
--
--
--
--
3
--
--
--
--
--
--
+0.28
+0.74
+0.57
-0.52
-0.47
-0.30
-0.34
DD
2001.01.15
mVrms
mA
K
dB
dB
ms
ms
ms
ms
ms
ms
V