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MX-COM

MX465 Datasheet Preview

MX465 Datasheet

LOW VOLTAGE CTCSS ENCODER/DECODER

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DATA BULLETIN
MX465
LOW VOLTAGE
CTCSS ENCODER/DECODER
with Tx and Rx Audio Filters
Features
 Meets TIA/EIA-603 Standards
 47 CTCSS Tones + Notone
 TX/RX Speech Filters
 Improved Sinad
 Serial or Parallel Programming
 Easy µP Interface
 Scanning on any Channel
 Standard 4MHz Xtal
(See MX165C for 1MHz)
 Low Voltage 3.3V to 5.0V
Applications
 Mobile Radio Channel Sharing
 Scan Trunking
 Wireless Intercom Traffic Control
 Hookswitch Supervision
 Repeater Control
TONE IN
TONE IN
FILTER
+
-
f TONE CLKS
CLKS
TONE DECODE
FILTER
REFERENCE
VOLTAGE
-
+
LOAD/LATCH
D5/SERIAL ENABLE 1
D4/SERIAL ENABLE 2
D3/SERIAL DATA IN
D2/SERIAL CLOCK
D1
D0
RX/TX
PTL
XTAL/CLK
XTAL
CLKS/XTAL
DIGITAL
INTERFACE
AND
CLOCK
GENERATION
CLKS/XTAL
A0-A5
D0-D10
TONE DETECT RX TONE DETECT
LOGIC
TONE OUT FILTER
TX TONE OUT
TONE
ROM
48 x 10
VDD
VSS
VBIAS
TX AUDIO IN
RX AUDIO IN
DECODE COMPARATOR REF.
DECODE COMPARATOR IN
CLK
300Hz
AUDIO FILTER
+
-
TX AUDIO OUT
RX AUDIO OUT
RX TONE DECODE
The MX465 CTCSS Encoder/Decoder is a low voltage, CMOS device that meets TIA/EIA-603 Standards.
The MX465 will encode and decode the tones 159.8Hz, 183.5Hz, 189.9Hz, 196.6Hz, 199.5Hz, 206.5Hz,
229.1Hz, and 254.1Hz in addition to the 39 standard CTCSS tones, for a total of 47 CTCSS tones + Notone.
With the incorporation of the on-chip TX and RX speech filter, the MX465 enhances voice/tone multiplexing by
attenuating TX and RX speech 36dB at frequencies below 250Hz while passing signals > 300Hz with only
1dB of ripple. This not only minimizes CTCSS talk-off in the TX mode but also improves Hum and Noise
performance in the RX mode.
Available in the following package styles: 24-pin TSSOP (MX465TN), 24-pin SSOP (MX465DS),
24-pin SOIC (MX465DW), 24-pin PLCC (MX465LH), 24-pin PDIP (MX465P), and 24-pin CDIP (MX465J) the
MX465 requires a single 3.3V to 5.0V supply and a 4MHz clock or crystal.
©1998 MX•COM, INC.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. #20480143.008
4800 Bethania Station Road, winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.




MX-COM

MX465 Datasheet Preview

MX465 Datasheet

LOW VOLTAGE CTCSS ENCODER/DECODER

No Preview Available !

Low Voltage CTCSS Encoder/Decoder
Section
2
CONTENTS
MX465
Page
1. Block Diagram ................................................................................................................. 3
2. Signal List ........................................................................................................................ 4
3. External Components ..................................................................................................... 6
4. General Description ........................................................................................................ 7
4.1 Description ............................................................................................................................. 7
4.2 I/O Conditions......................................................................................................................... 7
4.3 Filter Response ...................................................................................................................... 8
4.4 Serial and Parallel Mode Timing ............................................................................................ 8
4.5 CTCSS Programming........................................................................................................... 10
5. Performance Specification ........................................................................................... 11
5.1 Electrical Performance ......................................................................................................... 11
5.1.1 Absolute Maximum Ratings ........................................................................................................ 11
5.1.2 Operating Limits.......................................................................................................................... 12
5.2 Packaging............................................................................................................................. 14
MX-COM, Inc. Reserves the right to change specifications at any time and without notice
©1998 MX•COM, INC.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. #20480143.008
4800 Bethania Station Road, winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.


Part Number MX465
Description LOW VOLTAGE CTCSS ENCODER/DECODER
Maker MX-COM
Total Page 16 Pages
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