MT88L89AC MITEL [Mitel Networks Corporation], MT88L89AC Datasheet - Page 12

• Manufacturer Part Number: MT88L89AC
• Description: 3V Integrated DTMFTransceiver with Adaptive Micro Interface
• Manufacturer: MITEL [Mitel Networks Corporation]

MT88L89
4-136
DTMF/CP
INPUT
DTMF
OUTPUT
Notes:
R1, R2 = 100 k 1%
R3 = 374
R4 = 3.3 k 10%
R
C1 = 100 nF 5%
C2 = 100 nF 5%
C3 = 100 nF 10%*
X-tal = 3.579545 MHz
L
= 10 k
C1
1%
(min.)
R1
Figure 13 - Application Circuit (Single-Ended Input)
R2
X-tal
R
L
* Microprocessor based systems can inject undesirable noise into the supply rails.
The performance of the MT88L89 can be optimized by keeping
noise on the supply rails to a minimum. The decoupling capacitor (C3) should be
connected close to the device and ground loops should be avoided.
IN+
IN-
GS
VRef
VSS
OSC1
OSC2
TONE
R/W/WR
CS
MT88L89
IRQ/CP
DS/RD
St/GT
VDD
RS0
ESt
D3
D2
D1
D0
R3
C2
Advance Information
V
R4
C3
DD
To P
or C