DESCRIPTION
   HC53 oscillators provide a selectable dual frequency output. With pad    1 (FSEL) presented with logic 0 the first frequency is output on pad 3. With pad 1 presented with logic 1 the second frequency is output. Pad 1 (FSEL) has an internal pull-up resistor connected. 

FEATURES
• Dual frequency, digitally selectable
• Miniature 5.0 x 3.2mm package
• Frequency Range 1.0MHz to 200MHz
• Low supply current
• Supply voltage range, 1.8, 2.5V or 3.3 Volts