MB509 Ver la hoja de datos (PDF) - Fujitsu

Número de pieza

componentes Descripción

Fabricante

MB509

TWO MODULUS PRESCALER WITH STAND-BY MODE

Fujitsu 

MB509

Sampling scope input point

for input waveform

C1

P.G.

50Ω

C2

VCC

IN

SW

OUT

IN

MC

GND

VCC = +5.0V + 10%

C3

Sampling scope prober point

for output waveform

CL

MC Input

C1 : 1000pF

C2 : 1000pF

C3 : 0.1µF

CL : 8pF (including scope and jig capacitance)

PS pin is open.

Figure 2. Test Circuit

TIMING CHART (2 MODULUS)

Example: Divide ratio = 64/65

64

65

IN

32

32

OUT

32 32 32 32

32

33

32 32 33 32 33 32 32

MC

tSET

tSET

Note: When divide ratio of 65 is selected, positive pulse is added by one to 33.

The typical set up time is 16ns from the MC signal input to the timing of change of prescaler divide ratio.

4

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