SP8789 225MHz Frequency Divider Divided by 20/21 TWO MODULUS DIVIDER Description The SP8789 is a low power programmable ¸20/21 counter.lt divides by 20, when the control input is in the high state and by 21 when in the low state. An internal voltage regulator allows operation from a wide range of supply voltages. FEATURES - Very Low Power - Control Input and Output CMOS/TTL Compatible - AC Coupled Input - Operation up to 9.5V using Internal Regulator