參數(shù)資料
型號(hào): MT88E43AS
廠商: ZARLINK SEMICONDUCTOR INC
元件分類(lèi): 無(wú)繩電話/電話
英文描述: Extended Voltage Calling Number Identification Circuit 2
中文描述: TELEPHONE CALLING NO IDENT CKT, PDSO24
封裝: 0.300 INCH, MS-013AD, SOIC-24
文件頁(yè)數(shù): 12/26頁(yè)
文件大?。?/td> 317K
代理商: MT88E43AS
MT88E43
Data Sheet
5-64
A
pprovals
FCC Part 68, DOC CS-03, UL 1459, and CAN/CSA-
22.2 No. 225-M90 are all system (i.e. connectors,
power supply, cabinet, etc.) requirements. Since the
MT88E43 is a component and not a system, the
application circuit (Figure 11) has been designed to
meet the CO Trunk interface requirements of FCC,
DOC, UL, and CSA; thus enabling the complete
system to be approved by these standards bodies.
Products are designed in accordance with meeting
the above requirements; however, full conformance
to these standards is dependent upon the application
in which the MT88E43 is being used, and therefore,
approvals are the responsibility of the customer and
Zarlink will not have tested the product to meet the
above standards.
Figure 11 - Application Circuit with Improved Common Mode Noise Immunity and Isolation in
Line Interface
IN+
IN-
GS
V
Ref
CAP
TRIGin
TRIGRC
TRIGout
MODE
OSCin
OSCout
V
SS
V
DD
St/GT
ESt
StD
INT
DR
DATA
DCLK
FSKen
PWDN
IC
MT88E43
CD
(FSK Interface Mode 0 selected)
Vdd
= To microcontroller
= From microcontroller
1
TIP / A
RING / B
Vdd
Vdd
5
6
464K
12K1
5%
464K
5%
200K
5%
150K
5%
330nF
10%
100nF
10%
22nF
5%
22nF
5%
1
2
Vdd
100K
20%
Vdd
10nF
Vdd
NOTE: Resistors must have 1% tolerance, capacitors have 20%
tolerance unless specified otherwise.
: Bridge rectifier diodes are 1N914.
: For BT Application C=0.1
μ
F
±
5%, R
3
=422k
±
1%, R
2
=422k
±
1%
:
For applications where CAS speech immunity is required (e.g. CIDCW)
C=0.1
μ
F
±
5%, R
3
=825k
±
1%, R
2
=226k
±
1%
Motorola
4N25
1N4003
1N4003
1N4003
1N4003
1N914
1N5231B
C
R
3
R
2
R
1
R
1
: R
1
= 430K, R
4
= 34K for V
DD
= 5V
±
10% (See Figure 10)
: R
1
= 620K, R
4
= 63K4 for V
DD
= 3V
±
10% (See Figure 10)
R
4
R
4
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