Datasheet MM5369AA-N, MM5369AA-M Datasheet (NSC)

MM5369 17 Stage Oscillator/Divider

MM5369 17 Stage Oscillator/Divider

February 1995

General Description

The MM5369 is a CMOS integrated circuit with 17 binary
divider stages that can be used to generate a precise refer­ence from commonly available high frequency quartz crys­tals. An internal pulse is generated by mask programming
the combinations of stages 1 through 4, 16 and 17 to set or
reset the individual stages. The MM5369 is advanced one
count on the positive transition of each clock pulse. Two
buffered outputs are available: the cyrstal frequency for tun­ing purposes and the 17th stage output. The MM5369 is
available in an 8-lead dual-in-line epoxy package.

Connection and Block Diagrams

Dual-In-Line Package

Features

Y

Crystal oscillator

Y

Two buffered outputs

Output 1 crystal frequency
Output 2 full division

Y

High speed (4 MHz at V

Y

Wide supply range 3V –15V

Y

Low power

Y

Fully static operation

Y

8-lead dual-in-line package

Y

Low Current

DD

e

10V)

Option

Y

MM5369AA 3.58 MHz to 60 Hz

FIGURE 2

TL/F/10820– 2

Top View

TL/F/10820– 1

Order Number MM5369AA/N

See NS Package Number

N08E

Order Number MM5369AA/M

See NS Package Number M14A

C

1996 National Semiconductor Corporation RRD-B30M66/Printed in U. S. A.

TL/F/10820

TL/F/10820– 8

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Voltage at Any Pin

Operating Temperature 0§Ctoa70§C

Storage Temperature

b

0.3V to V

b

65§Ctoa150§C

DD

a

0.3V

Package Dissipation 500 mW

Maximum V

Voltage 16V

CC

Operating VCCRange 3V to 15V

Lead Temperature (Soldering, 10 seconds) 300§C

Electrical Characteristics

TAwithin operating temperature range, V

e

SS

GND, 3VsV

Parameter Conditions Min Typ Max Units

Quiescent Current Drain V

Operating Current Drain V

Frequency of Oscillation V

Output Current Levels V

Logical ‘‘1’’ Source 500 mA

e

15V 10 mA

DD

e

DD

e

DD

e

V

DD

e

DD

e

V

O

e

10V, f

4.19 MHz 1.2 2.5 mA

IN

10V DC 4.5 MHz
6V DC 2 MHz

10V

5V

Logical ‘‘0’’ Sink 500 mA

Output Voltage Levels V

Logical ‘‘1’’ 9.0 V

e

10V

DD

e

I

10 mA

O

Logical ‘‘0’’ 1.0 V

Note: For 3.58 MHz operation, VDDmust bet10V.

s

15V unless otherwise specified.

DD

Functional Description

A connection diagram for the MM5369 is shown in
and a block diagram is shown in

Figure 2.

TIME BASE

A precision time base is provided by the interconnection of
a 3,579,545 Hz quartz crystal and the RC network shown in

Figure 3

together with the CMOS inverter/amplifier 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 paral­lel load capacitance required for precise tuning of the quartz
crystal.

The network shown provides
used with standard crystals trimmed for C
to better than

g

2 ppm is easily obtainable.

l

100 ppm tuning range when

L

Figure 1

e

12 pF. Tuning

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.

ure 4

shows the relationship between the duty cycle and the

programmed modulus.

OUTPUTS

The Tuner Output is a buffered output at the crystal oscilla­tor frequency. This output is provided so that the crystal
frequency can be obtained without disturbing the crystal os­cillator. The Divide Output is the input frequency divided by
the mask programmed number. Both outputs are push-pull
outputs.

Fig-

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Functional Description (Continued)

*To be selected based on xtal used

FIGURE 3. Crystal Oscillator Network

FIGURE 5. Typical Current Drain

vs Oscillator Frequency

TL/F/10820– 3

TL/F/10820– 4

FIGURE 4. Plot of Divide-By vs Duty Cycle

TL/F/10820– 6

FIGURE 6. Output Waveform for the MM5369AA

TL/F/10820– 5

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Physical Dimensions inches (millimeters) unless otherwise noted

14-Lead (0.150×Wide) Molded Small Outline Package (M)

Order Number MM5369AA/M

NS Package Number M14A

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

MM5369 17 Stage Oscillator/Divider

8-Lead Molded Dual-In-Line Package (N)

Order Number MM5369N

NS Package Number N08E

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or 2. A critical component is any component of a life
systems which, (a) are intended for surgical implant support device or system whose failure to perform can
into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life
failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.

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Corporation Europe Hong Kong Ltd. Japan Ltd.

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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

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