MX165CLH [CMLMICRO]
Telecom Circuit, 1-Func, CMOS, PQCC24, PLASTIC, LCC-24;
| 型号： | MX165CLH |
| 厂家： | 
CML MICROCIRCUITS |
| 描述： | Telecom Circuit, 1-Func, CMOS, PQCC24, PLASTIC, LCC-24 电信 电信集成电路 |
| 文件： | 总16页 (文件大小：216K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA BULLETIN
Low Voltage
CTCSS Encoder/Decoder
with TX/RX Filters
MX165C
Features
Applications
• Meets TIA/EIA-603 Standards
• 47 CTCSS Tones + Notone
• TX/RX Speech Filters
• Mobile Radio Channel Sharing
• Scan Trunking
• Wireless Intercom Traffic Control
• Hookswitch Supervision
• Repeater Control
• Improved Sinad
• Serial or Parallel Programming
• Easy µP Interface
• Scanning on any Channel
• Standard 1MHz Xtal
(See MX465 for 4MHz)
• Low Voltage 3.3V to 5.0V
REFERENCE
TONE DECODE
VOLTAGE
TONE IN
FILTER
FILTER
-
+
TONE IN
+
-
f
TONE
CLKS
CLKS
LOAD/LATCH
D5/SERIAL ENABLE 1
RX TONE DETECT
CLKS/XTAL
CLKS/XTAL
TONE DETECT
LOGIC
D4/SERIAL ENABLE 2
D3/SERIAL DATA IN
TONE OUT FILTER
DIGITAL
INTERFACE
AND
D2/SERIAL CLOCK
D1
D0
TX TONE OUT
CLOCK
RX/TX
PTL
GENERATION
A0-A5
TONE
ROM
VDD
VSS
VBIAS
XTAL/CLK
XTAL
D0-D10
48 x 10
CLK
TX AUDIO OUT
RX AUDIO OUT
TX AUDIO IN
RX AUDIO IN
300Hz
AUDIO FILTER
RX TONE DECODE
DECODE COMPARATOR REF.
DECODE COMPARATOR IN
+
-
The MX165C CTCSS Encoder/Decoder is a low voltage, CMOS device that meets TIA/EIA-603 Standards. The MX165C
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 MX165C 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 (MX165CTN), 24-pin SOIC (MX165CDW), 24-pin PLCC
(MX165CLH), and 24-pin PDIP (MX165CP), the MX165C requires a single 3.3V to 5.0V supply and a 1MHz clock or
crystal.
© 1997 MX
•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
2
MX165C
CONTENTS
Section
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................................................................................................................................................11
5.2 Packaging ................................................................................................................................................ 14
MX•COM, Inc. Reserves the right to change specifications at any time and without notice
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
3
MX165C
Block Diagram
REFERENCE
VOLTAGE
TONE DECODE
FILTER
TONE IN
FILTER
-
+
TONE IN
+
-
f
TONE
CLKS
CLKS
LOAD/LATCH
D5/SERIAL ENABLE 1
RX TONE DETECT
TX TONE OUT
TONE DETECT
LOGIC
CLKS/XTAL
CLKS/XTAL
D4/SERIAL ENABLE 2
D3/SERIAL DATA IN
TONE OUT FILTER
DIGITAL
INTERFACE
AND
D2/SERIAL CLOCK
D1
D0
CLOCK
RX/TX
PTL
GENERATION
A0-A5
TONE
ROM
VDD
VSS
VBIAS
XTAL/CLK
XTAL
D0-D10
48 x 10
CLK
TX AUDIO OUT
RX AUDIO OUT
TX AUDIO IN
RX AUDIO IN
300Hz
AUDIO FILTER
RX TONE DECODE
DECODE COMPARATOR REF.
DECODE COMPARATOR IN
+
-
Figure 1 : Block Diagram
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
4
MX165C
Signal List
Pin No.
Signal
Type
Description
1
V
DD
power Positive supply. This pin should be bypassed to V by a capacitor
SS
mounted close to the device pins.
2
XTAL/CLOCK
input Input to the on-chip inverter used with a 1MHz Xtal or external clock
source.
3
4
output Output of the on-chip inverter (clock output).
XTAL
input
Controls 8 on-chip latches. It is used to latch RX / TX , PTL, and D0-
D5. A logic 1 applied to this input places the 8 latches in the
‘transparent’ mode. A logic 0 applied to this input places the 8 latches
in the ‘latched’ mode. In Parallel Mode, data is loaded and latched by
a logic 1-0 transition (see Figure 4). In Serial Mode, data is loaded
and latched by a 0-1-0 strobe pulse on this pin (see Figure 5).
LOAD/LATCH
Internally pulled to V
DD
5
6
7
D5 / SERIAL ENABLE 1
input Data input D5 (Parallel Mode). A logic 1 applied to this input together
with a logic 0 applied to D4/SERIAL ENABLE 2 will place the device
in Serial Mode (see Figure 5). Internally pulled to V
.
DD
input Data input D4 (Parallel Mode). A logic 0 applied to this input together
with a logic 1 applied to D5 / SERIAL ENABLE 1 will place the device
D4 / SERIAL ENABLE 2
D3 / SERIAL DATA IN
in Serial Mode (see Figure 5). Internally pulled to V
.
DD
input Data input D3 (Parallel Mode). In Serial Mode this pin becomes the
serial data input for D5-D0, RX / TX and PTL (see Figure 5). D5 is
clocked first and PTL last. Internally pulled to V
.
DD
8
D2 / SERIAL CLOCK
input Data input D2 (Parallel Mode). In Serial Mode this pin becomes the
SERIAL CLOCK input. Data is clocked on the positive going edge
(see Figure 5). Internally pulled to V
.
DD
9
D1
D0
input Data input D1 (Parallel Mode). Internally pulled to V
input Data input D0 (Parallel Mode). Internally pulled to V
power Negative supply.
.
.
DD
DD
10
11
12
V
SS
DECODE COMPARATOR
REF.
input Internally biased to V /3 or 2 V /3 via 1M resistors depending on
DD DD
the logic state of the RX TONE DECODE pin.
RX TONE DECODE = 1 will bias this input 2 V /3; a logic 0 will bias
DD
this input V /3. This input provides the DECODE COMPARATOR
DD
REFERENCE voltage, and the switching of bias voltages provides
hysteresis to reduce ‘chatter’ under marginal conditions.
13
output Gated output of the decode comparator. This output is used to gate
the RX Audio path. A logic 0 on this pin indicates a successful
decode and the DECODE COMPARATOR IN pin is more positive
than the DECODE COMPARATOR REF. input (see Table 3).
RX TONE DECODE
14
15
DECODE COMPARATOR IN
RX TONE DETECT
input Inverting input of the DECODE COMPARATOR. This pin is normally
connected to the integrated output of the RX TONE DETECT line.
output In RX mode this output will go to logic 1 during a successful decode.
It must be externally integrated to control response and deresponse
times (see Table 3).
16
17
TX TONE OUT
RX / TX
output The CTCSS sinewave output appears on this pin under control of the
RX / TX pin. When not transmitting a tone, TX TONE OUT may be
biased to V /2. (see Table 3).
DD
input
RX or TX modes selected in Parallel Mode (see Figure 4). In Serial
Mode this function is serially loaded. This pin is internally pulled to
V
DD
via a 1MΩ resistor.
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
5
MX165C
Pin No.
Signal
Type
Description
18
PTL
input In RX mode this pin operates as a ‘Push To Listen’ function by
enabling the RX audio path, thus overriding the tone squelch function
(Parallel Mode). In Serial Mode this function is loaded serially.
Internal pull-up to V
DD
19
20
RX AUDIO OUT
TX AUDIO OUT
output High pass filtered RX AUDIO OUT. This pin outputs audio when
RX TONE DECODE = logic 0, PTL = logic 1, or when Notone is
programmed (see Table 4). In TX mode this pin is biased to V /2.
DD
output High pass filtered TX AUDIO OUT pin. In TX mode this pin outputs
audio present at the TX AUDIO IN pin. In RX mode this pin is biased
to V /2
DD
21
22
V
output Output of an internally generated V /2 bias level that would
DD
BIAS
normally be externally bypassed to V via capacitor C6.
SS
TX AUDIO IN
input In TX mode TX AUDIO IN may be prefiltered, using the TX Audio
path, thus helping to avoid talk-off due to intermodulation of speech
frequencies with the transmitted CTCSS tone. Internally biased to
V
DD
/2.
23
24
RX AUDIO IN
TONE INPUT
input Input to the audio high pass filter in RX mode. Internally biased to
/2.
V
DD
input Input to the CTCSS tone detector. Internally biased to V /2.
DD
Table 1: Signal List
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
6
MX165C
External Components
VDD
VDD
XTAL/CLK
XTAL
TONE IN
C4
C1
1
24
23
22
21
20
19
18
17
16
15
14
13
RX AUDIO IN
TX AUDIO IN
VBIAS
C5
C2
2
X1
R1
C10
C6
C3
3
LOAD / LATCH
4
D5/SERIAL ENABLE 1
TX AUDIO OUT
RX AUDIO OUT
PTL
C11
C7
5
D4/SERIAL ENABLE 2
6
MX165C
D3/SERIAL DATA IN
7
D2/SERIAL CLOCK
RX / TX
8
D1
D0
TONE OUT
RX TONE DETECT
C8
9
R2
D1
10
11
12
R3
VSS
DECODE COMPARATOR IN
RX TONE DECODE
C9
DECODE COMPARATOR REF.
Figure 2 : Recommended External Components for Typical Application
R1 Note 1
R2
C6
4.7MΩ ±10%
560kΩ ±10%
820kΩ ±10%
0.1µF ±20%
0.47µF
0.1µF
±20%
±20%
±20%
±20%
±20%
±20%
C7 Note 2
C8 Note 2
C9 Note 2
C10 Note 2
C11 Note 2
D1
R3
0.1µF
C1
0.1µF
C2 Note 1
C3 Note 1
C4 Note 2
C5 Note 2
18pF
33pF
±20%
±20%
0.1µF
0.1µF
small signal
1MHz
0.1µF ±20%
0.1µF ±20%
X1 Note 1
100ppm max.
Table 2: External Components
External Components Notes:
1. The values specified for R1, C2, and C3 have been found to be satisfactory when used with a crystal (X1) whose
equivalent series resistance is ≤ 1000Ω. 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. The 0.1µF value for the DC Blocking capacitors, C4, C5, C7, C8, C9, C10, and C11 is not a requirement. For the
capacitors C4, C5, and C10, the input impedance is internal to the device and specified typical as 550kΩ. For the
remaining capacitors external circuits will be important in determining the input impedance.
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
7
MX165C
General Description
Description
Voice on shared radio channels are multiplexed with a subaudible CTCSS (Continuous Tone Controlled Subaudible
Squelch) tone as a means of directing messages among user groups sharing the same RF frequencies. CTCSS
modulates the transmitter with a discrete tone, from 39 standard CTCSS tones in the range (67.0Hz to 250.0Hz)
according to TIA/EIA-603. There are an additional eight CTCSS tones not specified in TIA/EIA-603 that the MX165C will
encode and decode. They are : 159.8Hz, 183.5Hz, 189.9Hz, 196.6Hz, 199.5Hz, 206.5Hz, 229.1Hz, and 254.1Hz, for a
total of 47 CTCSS tones plus Notone.
The MX165C also incorporates TX/RX on chip speech filters. In early CTCSS designs, TX speech was not filtered from
the CTCSS tone, rather the filtering was dependent upon the host transmitter’s pre-emphasis network. At only
6dB/octave, the attenuation of speech components at higher CTCSS tones was only a few dB which resulted in talk-off
(low frequency voice components unsquelching the receiver audio).
I/O Conditions
Tone
0
No Tone
0
Tone
1
Tone
1
Tone
1
No Tone
1
D0-D5
Input Pins Condition
RX / TX
PTL
0
X
X
0
0
1
0
X
1
X
X
Decode Comparator In
Output Pins Condition
RX TONE DETECT
RX TONE DECODE
X
0
1
0
1
0
1
0
1
1
0
X
0
Result / Function
Tone Transmitter Enabled
TX Audio Path Enabled
Tone Decode Enabled
RX Audio Path Enabled
Notes
Yes
Yes
No (Bias)
Yes
No (Bias)
No
No (Bias)
No
No (Bias) No (Bias)
No
Yes
Yes
5
No
Yes
Yes
6
No
No
Yes
Yes
Yes
4
No (Bias)
1
No (Bias)
2
No (Bias)
3
Notes:
1. Normal tone transmit condition.
2. Notone programmed in TX mode, tone transmit output set to V /2. TX audio path enabled.
DD
3. Normal decode standby.
4. Normal decode standby with PTL used to enable audio.
5. Normal decode of correct CTCSS tone condition, PTL has no effect.
6. Notone programmed in RX mode, tone transmit output (Bias). RX audio path enabled.
7. X =don’t care
Table 3: Combinations of Input / Output conditions
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
8
MX165C
Filter Response
Gain (dB)
0
-10
-20
Voiceband Frequencies
CTCSS Frequencies
-30
-33
-40
-50
-60
-70
250.3
100
200
400
300
Frequency (Hz)
Figure 3 : Voiceband Filter Response
Serial and Parallel Mode Timing
D0-D5
RX/TX, PTL
tSP
tL
LOAD/LATCH
Figure 4 : Parallel Mode
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
9
MX165C
1
D5
0
SERIAL
ENABLE
1
D4
0
t1
DATA D5
DATA D4
D3
RX/TX
PTL
t2
1
DATA
(Note)
D3
D2
0
tSS
tH
SERIAL
tC
CLOCK
0
tL
LOAD DATA
LOAD/
LATCH
L/L
DATA
LATCHED
LATCH DATA
D1
DON'T CARE - 1MΩ PULL UP
DON'T CARE - 1MΩ PULL UP
DON'T
CARE
D0
Note : Serial bit 1 through bit 8 = D5, D4, D3, D2, D1, D0, RX/TX and PTL respectively. Load bit 1 first, bit 8 last
Figure 5 : Serial Mode
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
10
MX165C
CTCSS Programming
Tone
Programming Inputs
Nominal Frequency (Hz)
MX165C Frequency
(Hz)
D5
D4
D3
D2
D1
D0
Hex
∆ f (%)
0
67.0
69.3
66.98
-0.029
0.024
0.001
0.042
-0.046
-0.029
-0.021
-0.020
-0.007
-0.048
-0.042
-0.036
-0.040
-0.069
-0.05
1
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
1
0
1
1
0
1
0
0
0
1
1
1
1
0
1
1
1
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
1
0
1
1
1
1
0
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
1
1
1
1
1
0
1
0
1
1
1
0
0
0
0
0
0
0
0
1
1
1
0
1
1
1
1
0
1
0
0
1
1
0
1
0
0
0
1
0
1
1
1
0
1
0
1
1
0
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
1
0
0
0
1
0
1
1
0
0
1
1
1
1
0
1
1
1
0
1
1
0
0
0
1
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
1
0
0
0
1
1
0
1
1
0
0
0
1
3F
39
1F
3E
0F
3D
1E
3C
0E
3B
1D
3A
0D
1C
0C
1B
0B
1A
0A
19
09
18
08
17
07
16
31
06
15
05
14
32
04
33
13
34
35
03
36
12
02
11
69.32
71.9
71.901
74.4
74.431
77.0
76.965
79.7
79.677
82.5
82.483
85.4
85.383
88.5
88.494
91.5
91.456
94.8
94.76
97.4
97.435
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
99.96
103.429
107.147
110.954
114.84
0.049
0.035
-0.006
0.023
0.022
-0.095
0.082
0.016
-0.107
0.027
0.112
0.085
0.069
-0.114
0.078
-0.137
0.098
0.048
0.089
0.033
-0.138
-0.094
0.071
-0.142
0.070
-0.113
-0.160
118.793
123.028
127.328
131.674
136.612
141.323
146.044
151.441
156.875
159.936
162.311
167.708
173.936
179.654
183.680
186.289
190.069
192.864
196.329
199.312
203.645
206.207
210.848
217.853
225.339
•
159.8
162.2
167.9
173.8
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
•
•
•
•
•
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
11
MX165C
Tone
Programming Inputs
Nominal Frequency (Hz)
MX165C Frequency
(Hz)
D5
D4
D3
D2
D1
D0
Hex
∆ f (%)
0
•
229.1
233.6
229.279
233.359
241.970
250.282
254.162
0.078
-0.103
0.070
-0.007
0.024
N/A
1
0
0
0
1
1
1
1
0
1
0
1
1
0
0
0
1
1
0
0
0
0
0
X
1
1
0
0
0
0
X
37
01
10
00
38
30
2X
0
241.8
0
0
250.3
0
0
0
•
•
254.1
1
Notone
0
0
Serial input mode
N/A
Data
Clock
Not specified in the TIA/EIA tone set
Table 4: CTCSS Tones
Performance Specification
Electrical Performance
Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device. Operation of the device outside the operating
limits is not implied.
General
Supply (V - V
Min.
-0.3
-0.3
Max.
Units
)
SS
7.0
V
V
DD
Voltage on any pin to V
Current
V
+ 0.3
SS
DD
V
V
-30
-30
-20
30
30
20
mA
mA
mA
DD
SS
any other pins
TN / DW / LH / DIP Package
Total Allowable Power Dissipation at T
Derating above 25°C
=25°C
800
10
mW
AMB
mW/°C above 25°C
Storage Temperature
-55
125
85
°C
°C
Operating temperature
- 40
Operating Limits
Correct operation of the device outside these limits is not implied
Min.
Max.
5.5
1.0
85
Units
Supply (VDD - VSS)
Xtal Frequency
2.7
1.0
-40
V
MHz
°C
Operating Temperature
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
12
MX165C
Operating Characteristics
For the following conditions unless otherwise specified
V
DD
= 3.3V / 5.0V at T
= 25°C, V = 0V,
AMB SS
Xtal Frequency = 1.0 MHz, 100ppm max.
(Over the life of the Xtal the operating range may vary from 100ppm up to 1000ppm)
0dB ref. = 750mV (proportional to V ; see note 17)
RMS
DD
Composite Signal:
1kHz test tone = 300mV
, f0 CTCSS tone = 30 mV
RMS
, 75mV
RMS
Noise (band limited to 6kHz Gaussian)
RMS
Notes
Min.
Typ.
Max.
Units
Static Values
Supply voltage
Supply current
2.7
3.3/5.0
5.5
V
V
V
= 5.0V
= 3.3V
3.2
1.1
2.0
550
400
40
4.2
1.6
mA
mA
mA
kΩ
Ω
DD
DD
Rx Monitor
Analog input impedance
Analog output impedance
Digital Input impedance
Input logic 1
18
18
1,18
1
480
25
1000
kΩ
V
70%V
DD
Input logic 0
1
30%V
20%V
V
DD
DD
Output Logic 1 source = 0.1mA
Output Logic 0 sink = 0.1mA
Dynamic Values
2
80%V
V
DD
2
V
Speech filter
Total harmonic distortion
5,8,19
8,18
0.7
0.5
1.5
1.0
%
Output noise level
mV
RMS
(input ac short circuit, audio switch enabled)
Sinad
8,9
18
40
33
50
dB
dB
Hz
dB
dB
dB
dB
Spurious emissions
Cutoff frequency
- 48
1.8
0.5
300
1
Bandpass ripple
8
Stopband attenuation <250Hz
Passband gain 1kHz
TX/RX isolation
7,8,19
36
0
- 0.5
5
60
Encoder
Tone output level
12
-1.0
0
1.0
0.3
dB
Tone Frequency Accuracy (f error)
Risetime to 90% nominal output
- 0.3
%f
0
f >100Hz
4,10
4,10
19
15
45
75
120
2
ms
ms
%
0
f <100Hz
0
Total Harmonic Distortion
1.5
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
13
MX165C
Notes
Min.
Typ.
Max.
Units
Decoder
Pure tone decode threshold
Composite signal decode threshold
Decode input signal level
Pure tone decode response time
Pure tone decode deresponse time
Decode response time
19
3
7
15
30
mV
RMS
mV
RMS
16
-20
95
95
3.5
140
170
250
250
dB
13,14
13,15
3,6,10
3,10
115
130
ms
ms
ms
ms
Deresponse time
180
Decode selectivity:
Upper decode band edge
Lower decode band edge
Serial / Parallel Inputs
3,11,19,20
1.005f
1.015f
0.985f
0.995f
0+1
Hz
Hz
0
0
3,11,19,20 1.005f
0.995f
0
0-1
0
Parallel Set Up Time (t
)
400
400
400
400
400
400
400
ns
ns
SP
Load / Latch Pulse Width (t )
L
Serial Clock Pulse Width (t )
ns
C
Serial Data Set-Up Time (t
)
ns
SS
Serial Data Hold Time (t )
ns
H
Serial Enable Time (t )
ns
1
Serial Load / Latch Set-Up Time (t )
ns
2
Serial Clock Frequency
1
MHz
Operating Characteristics Notes:
1. Refers to RX/TX, PTL, Decode Comparator Input, D0-D5.
2. All logic outputs.
3. Composite signal test condition.
4. Any programming tone and R = 10kΩ, C = 15pF.
L
L
5. With an input level of 0dB @1kHz
6. f >100Hz (for 100 Hz> f >67Hz: t=100/ f Hz x 250ms)
0
0
0
7. See Figure 3.
8. Measured in a 30kHz bandwidth.
9. With an input level of -3.5dB @1kHz
10. Per TIA/EIA-603.
11. Per TIA/EIA-603, device will not decode adjacent TIA/EIA-603 Tones.
12. Tone output level is proportional to V
.
DD
13. f =156.7Hz @ -20dB.
0
14. Typically 12.5 Tone Cycles + 40ms.
15. Typically 7 Tone Cycles + 90ms.
16. Max composite signal is 3.5dB with:
Noise (band limited 6kHz Gaussian) = -12dB ref. to 1kHz test tone
f CTCSS tone = -20dB ref. to 1kHz test tone
0
17. For maximum dynamic range, set audio level to 0dB, V x150mV
, using minimum V under which system is
RMS DD
DD
intended to work. (e.g. for a 2.7V system, use 0dB equal to 405mV
).
RMS
18. By characterization only.
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
14
MX165C
19. Batch sampled only
20. For example, if: f = 100.0Hz (f = 97.4Hz f
= 103.5Hz)
0
0-1
0+1
Decode Selectivity
Min
Typ
Max
Unit
Upper Decode Band
Edge
100.5 101.5
102.98
Hz
Lower Decode Band
Edge
97.89
98.5
99.5
Hz
Packaging
A
Package Tolerances
DIM.
MIN.
TYP.
MAX.
A
B
C
E
H
J
0.303 (7.70)
0.169 (4.30)
----------
0.311 (7.90)
0.177 (4.50)
0.047 (1.20)
0.256 (6.50)
0.006 (0.15)
0.012 (0.30)
0.030 (0.75)
ALTERNATIVE
B
E
PIN
LOCATION
MARKING
0.248 (6.30)
0.002 (0.05)
0.007 (0.17)
0.020 (0.50)
L
T
PIN 1
L
P
T
Y
0.0256 (0.65)
0.003 (0.08)
0°
Y
0.008 (0.20)
8°
C
NOTE : All dimensions in inches (mm.)
Angles are in degrees
H
P
J
Figure 6: 24-pin TSSOP Mechanical Outline: Order as part no. MX165CTN
Package Tolerances
A
DIM.
MIN.
TYP.
MAX.
Z
A
B
C
E
H
J
K
L
P
0.613 (15.57)
0.299 (7.59)
0.105 (2.67)
0.419 (10.64)
0.020 (0.51)
0.020 (0.51)
0.046 (1.17)
0.597 (15.16)
0.286 (7.26)
0.093 (2.36)
0.390 (9.90)
0.003 (0.08)
0.013 (0.33)
0.036 (0.91)
ALTERNATIVE
PIN
LOCATION
B
E
W
X
MARKING
L
0.050 (1.27)
0.016 (0.41)
T
PIN 1
Y
0.050 (1.27)
45°
0.0125 (0.32)
0.009 (0.23)
T
W
X
10°
7°
0°
5°
K
C
Y
Z
5°
H
P
J
NOTE : All dimensions in inches (mm.)
Angles are in degrees
Figure 7: 24-pin SOIC Mechanical Outline: Order as part no. MX165CDW
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
Low Voltage CTCSS Encoder/Decoder
15
MX165C
E
B
C
Package Tolerances
K
DIM.
A
MIN.
TYP.
MAX.
Y
0.380 (9.61)
0.380 (9.61)
0.128 (3.25)
0.417 (10.60)
0.417 (10.60)
0.409 (10.40)
0.409 (10.40)
0.146 (3.70)
0.435 (11.05)
0.435 (11.05)
D A
B
J
C
D
E
W
W
H
F
0.250 (6.35)
0.250 (6.35)
0.023 (0.58)
T
PIN 1
P
G
H
J
K
P
T
W
Y
0.018 (0.45)
0.047 (1.19)
0.049 (1.24)
0.022 (0.55)
0.048 (1.22)
0.051 (1.30)
0.009 (0.22)
0.006 (0.152)
30°
45°
6°
G
NOTE : All dimensions in inches (mm.)
Angles are in degrees
F
Figure 8: 24-pin PLCC Mechanical Outline: Order as part no. MX165CLH
A
Package Tolerances
DIM.
MIN.
TYP.
MAX.
A
B
C
E
1.200 (30.48)
0.500 (12.70)
0.151 (3.84)
0.600 (15.24)
1.270 (32.26)
0.555 (14.04)
0.220 (5.59)
0.670 (17.02)
0.625 (15.88)
0.045 (1.14)
0.023 (0.58)
0.065 (1.65)
0.074 (1.88)
0.160 (4.05)
E
B
E1
Y
E1 0.590 (14.99)
H
J
J1
K
L
P
T
T
0.015 (0.38)
0.015 (0.38)
0.040 (1.02)
0.066 (1.67)
0.121 (3.07)
PIN1
K
C
0.100 (2.54)
H
L
0.008 (0.20)
0.015 (0.38)
Y
7°
NOTE : All dimensions in inches (mm.)
Angles are in degrees
P
J1
J
Figure 9: 24-pin PDIP Mechanical Outline: Order as part no. MX165CP
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CML Product Data
In the process of creating a more global image, the three standard product semiconductor
companies of CML Microsystems Plc (Consumer Microcircuits Limited (UK), MX-COM, Inc
(USA) and CML Microcircuits (Singapore) Pte Ltd) have undergone name changes and, whilst
maintaining their separate new names (CML Microcircuits (UK) Ltd, CML Microcircuits (USA)
Inc and CML Microcircuits (Singapore) Pte Ltd), now operate under the single title CML
Microcircuits.
These companies are all 100% owned operating companies of the CML Microsystems Plc
Group and these changes are purely changes of name and do not change any underlying legal
entities and hence will have no effect on any agreements or contacts currently in force.
CML Microcircuits Product Prefix Codes
Until the latter part of 1996, the differentiator between products manufactured and sold from
MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX
respectively. These products use the same silicon etc. and today still carry the same prefixes.
In the latter part of 1996, both companies adopted the common prefix: CMX.
This notification is relevant product information to which it is attached.
CML Microcircuits (USA) [formerly MX-COM, Inc.] Product Textual Marking
On CML Microcircuits (USA) products, the ‘MX-COM’ textual logo is being replaced by a ‘CML’
textual logo.
Company contact information is as below:
CML Microcircuits
(UK)Ltd
CML Microcircuits
(USA) Inc.
CML Microcircuits
(Singapore)PteLtd
COMMUNICATION SEMICONDUCTORS
COMMUNICATION SEMICONDUCTORS
COMMUNICATION SEMICONDUCTORS
Oval Park, Langford, Maldon,
Essex, CM9 6WG, England
Tel: +44 (0)1621 875500
Fax: +44 (0)1621 875600
uk.sales@cmlmicro.com
www.cmlmicro.com
4800 Bethania Station Road,
Winston-Salem, NC 27105, USA
Tel: +1 336 744 5050,
0800 638 5577
Fax: +1 336 744 5054
us.sales@cmlmicro.com
www.cmlmicro.com
No 2 Kallang Pudding Road, 09-05/
06 Mactech Industrial Building,
Singapore 349307
Tel: +65 7450426
Fax: +65 7452917
sg.sales@cmlmicro.com
www.cmlmicro.com
D/CML (D)/2 May 2002
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