Page 5

Absolute Maximum Ratings

Min.

Max.

Units

Note

B+ Supply Voltage input

-0.30

25.00

volts DC

+5V Supply Voltage input

-0.30

7.00

volts DC

Voltage on logic inputs or outputs

-0.30

5.30

volts DC

1

Voltage on analog input or outputs

-0.40

20.00

volts DC

Storage Temperature

0.00

85.00

C

Operating Temperature

0.00

50.00

C

2.2 Operating Characteristics

For the following conditions unless otherwise specified:

T=25C, DC supply voltage B+ = +12VDC, GND = 0V

0dB ref. = 750mVrms (VDD = 5VDC)

Composite CTCSS test Signal: 300 mVrms 1KHz test tone, 75 mVrms band limited 6KHz

gaussian white noise, 30 mVrms CTCSS tone

Xtal Frequency = 4.0mhz, 100ppm max

For additional Operation Characteristics refer to MX-COM MX465 data sheet

Characteristic

Minimum

Typical

Maximum

Units

Note

Supply voltage

B+ DC Supply Voltage Input

8

12

25

VDC

+5V DC Supply Voltage Input

35

7

VDC

DC Supply Current

6

10

ma

Input Logic specifications for

Input Low Voltage

1.50

VDC

1

Input High Voltage

3.50

VDC

1

Output Logic Specifications for DECODE (open collector output)

Output Current (sink)

10

mA

Analog Outputs TXOUT, RXOUT, TONEOUT

Impedance

1000



TXOUT Level

750

mVrms

RXOUT Level

500

mVrms

TONEOUT Level

500

mVrms

Analog Inputs TXIN, RXIN

Impedance

1000



TXIN Level

100

300

mVrms

RXIN Level

30

500

mVrms

TX and RX Audio Filter

Total Harmonic Distortion

2

5

%THD

2

Output Noise Level (input AC gnd)

2

mVrms

Passband

300

3000

Hz

Bandpass Ripple

-1

1

dB

Passband Gain at 1KHz

0

dB

CTCSS Decoder

Input signal level

30

436

mVrms

2

Response Time

250

ms

3,4,5

Deresponse Time

180.00

250

ms

3,4,5

Upper Decode Band Edge

1.005 Fi

.995 Fi+1

Hz

3,6