1. General description

The 74HC4046A; 74HCT4046A is a high-speed Si-gate CMOS device. It is specified in compliance

with JEDEC standard no 7A.

2. Features and benefits

• Low power consumption

• VCO-Inhibit control for ON/OFF keying and for low standby power consumption

• Center frequency up to 17 MHz (typical) at VCC = 4.5 V

• Choice of three phase comparators:

• PC1: EXCLUSIVE-OR

• PC2: Edge-triggered J-K flip-flop

• PC3: Edge-triggered RS flip-flop

• Excellent Voltage Controlled Oscillator (VCO) linearity

• Low frequency drift with supply voltage and temperature variations

• Operating power supply voltage range:

• VCO section 3.0 V to 6.0 V

• Digital section 2.0 V to 6.0 V

• Zero voltage offset due to operational amplifier buffering

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

3. Applications

• FM modulation and demodulation

• Frequency synthesis and multiplication

• Frequency discrimination

• Tone decoding

• Data synchronization and conditioning

• Voltage-to-frequency conversion

• Motor-speed control