Pin Assignment
X1 1
VDD 2
VIN 3
GND 4
8 X2
7 GND
6 NC
5 CLK
MK3727S
MK3727A
MK3727C
MK3727D
8 Pin (150 mil) SOIC
MK3727
LOW COST 24 - 36 MHZ 3.3 VOLT VCXO
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
XI
VDD
VIN
GND
CLK
NC
GND
X2
Pin
Type
Pin Description
Input Crystal connection -- Connect to the external pullable crystal.
Power Connect to +3.3 V (0.01uf decoupling capacitor recommended)
Input Voltage input to VCXO -- 0 to 3.3 V analog input which controls the
oscillation frequency of the VCXO.
Power Connect to ground
Output Clock output
-- No internal connection (may connect to ground or VDD)
Power Connect to ground
Input Crystal connection -- Connect to the external pullable crystal.
MDS 3727 E
2
Revision 052901
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