PLL/Frequency Synthesis Circuit, CMOS, PDIP16
GENERAL DESCRIPTION
The 74HC/HCT4046A are high-speed Si-gate CMOS devices and are pin compatible with the “4046” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A.
FEATURES
• Low power consumption
• Centre frequency of up to 17 MHz typ. at VCC= 4.5 V
• Choice of three phase comparators: EXCLUSIVE-OR;
edge-triggered JK flip-flop;
edge-triggered RS flip-flop
• Excellent VCO frequency linearity
• VCO-inhibit control for ON/OFF keying and for low standby power consumption
• Minimal frequency drift
• Operating power supply voltage range:
VCO section 3.0 to 6.0 V
digital section 2.0 to 6.0 V
• Zero voltage offset due to op-amp buffering
• Output capability: standard
• ICCcategory: MSI.