Manufacturer	Part Number	Description
Shenzhen Great Electronics	MCO-1500A	TTL/HCMOS Crystal Oscillators
Shenzhen Great Electronics	MCO1500A	TTL/HCMOS Crystal Oscillators
Shenzhen Great Electronics	MCO-1500B	TTL/HCMOS Crystal Oscillators
Shenzhen Great Electronics	MCO1500B	TTL/HCMOS Crystal Oscillators