MX375P Просмотр технического описания (PDF) - CML Microsystems Plc
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MX375P Datasheet PDF : 16 Pages
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PvtSQUELCHTM CTCSS Encoder/Decoder
6
3. External Components
MX375
C1 +
MX375J/P/LH8
C2
1 XTAL
C3
X1 R1 2 XTAL
VDD
RXTONE
28
27
LOAD/LATCH
3 LOAD/LATCH
PRIVEN 26
D5
4 D5
RX/TX 25
D4
5 D4
CONTROL 24
D3
6 D3
PTL 23
D2
7 D2
TXIN 22
D1
8 D1
RXIN 21
D0
9 D0
TXOUT 20
CTCSS TONE
DECODE OUTPUT
10 RX DECODE
RXOUT 19
C10
D1
R2
NOTONE
11 COMP IN
R3 12 DETECT
13 NOTONE
BALMOD 18
FILTER 17
BIAS 16
VSS
14 VSS
TXTONE 15
+5V
VDD
C5 CTCSS TONE IN (RX)
PRIVACY ENABLE
PUSH TO TALK
MODE SELECTION
PUSH TO LISTEN
C11 TX AUDIO IN
C6 RX AUDIO IN
C12 TX AUDIO OUT
C8 RX AUDIO OUT
C4
BIAS
C9
CTCSS TONE
OUTPUT (TX)
C13
C7 +
Figure 2: Recommended External Components
R1
1MΩ
±10%
C6
R2
560kΩ ±10%
C7
R3
820kΩ ±10%
C8
X1 Note 1, 2 4MHz
C9
C1
1.0µF ±20%
C10
C2
33pF ±20%
C11
C3
33pF ±20%
C12
C4
0.1µF ±20%
C13
C5
0.1µF ±20%
D1
0.1µF
1.0µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.001µF
small signal
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Table 2: Recommended External Components
Recommended External Components Note:
1. For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at least 40% of
VDD, peak to peak. Tuning fork crystals generally cannot meet this requirement. To obtain crystal oscillator design
assistance, consult your crystal manufacturer.
2. XTAL - At cut, fundamental, parallel resonant 20pF load capacitance, 0.05% tolerance
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480026.007
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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