Absolute Maximum Ratings

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Voltage at Any Pin

b

Operating Temperature

Storage Temperature

b

Package Dissipation

500 mW

16V

3V to 15V

Lead Temperature (Soldering 10 seconds)

300 C

Electrical Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Quiescent Current Drain

10

m

A

Operating Current Drain

12

25

mA

Frequency of Oscillation

DC

45

MHz

DC

2

MHz

Output Current Levels

Logical ‘‘1’’ Source

500

m

A

Logical ‘‘0’’ Sink

500

m

A

Output Voltage Levels

Logical ‘‘1’’

90

V

Logical ‘‘0’’

10

V

Note

Functional Description

A connection diagram for the MM5369 is shown in

Figure 1

and a block diagram is shown in

Figure 2

TIME BASE

A precision time base is provided by the interconnection of

a 3579545 Hz quartz crystal and the RC network shown in

Figure 3 together with the CMOS inverteramplifier provided

between the OSC IN and the OSC OUT terminals Resistor

R1 is necessary to bias the inverter for class A amplifier

operation Capacitors C1 and C2 in series provide the paral-

lel load capacitance required for precise tuning of the quartz

crystal

DIVIDER

A pulse is genertaed when divider stages 1 through 4 16

and 17 are in the correct state By mask options this pulse

is used to set or reset individual stages of the counter

Fig-

ure 4 shows the relationship between the duty cycle and the

programmed modulus

OUTPUTS

The Tuner Output is a buffered output at the crystal oscilla-

tor frequency This output is provided so that the crystal

frequency can be obtained without disturbing the crystal os-

cillator The Divide Output is the input frequency divided by

the mask programmed number Both outputs are push-pull

outputs

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