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.