MK3721

LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO

VCXO

IDT™ / ICS™ LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO

2

MK3721

REV E 103003

Pin Assignment

Pin Descriptions

X1

VDD

VI N

DC

GND

REFOUT

DC

X2

1

2

3

4

8

7

6

5

M K 372 1S

M K 372 1D

8 - P i n (1 5 0 m il) S O IC

Pin

Number

Pin

Name

Pin

Type

Pin Description

1

XI

Input

Crystal connection. Connect to the external pullable crystal.

2

VDD

Power

Connect to +3.3 V (0.01

µf decoupling capacitor recommended).

3

VIN

Input

Voltage input to VCXO. Zero to 3.3 V signal which controls the

VCXO frequency.

4

GND

Power

Connect to ground.

5

DC

--

Do not connect to this pin.

6

REFOUT

Output

VCXO CMOS level clock output matches the nominal frequency of

the crystal.

7

DC

--

Do not connect anything to this pin.

8

X2

Input

Crystal connection. Connect to a pullable 16.2 to 28 MHz crystal.