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HEF4046BD

The HEF4046BD is a Phase-locked loop IC from Phihong USA. It integrates a voltage-controlled oscillator (VCO) and two phase comparators.

✓ Total Stock: 44 pcs

$ Price Range: $165.89

HEF4046BD Available from 1 distributor

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✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Fe Components ✓ Non-Authorised Inventory information	44 pcs On Request	44 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

HEF4046BD Specifications Quick View

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Category	New Products
Manufacturer Name	Phihong USA

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HEF4046BD Description

Short technical summary and product information.

The HEF4046BD is a versatile Phase-locked loop (PLL) integrated circuit manufactured by Phihong USA. This MSI (Medium Scale Integration) device comprises a linear voltage-controlled oscillator (VCO) and two distinct phase comparators, all sharing a common signal input amplifier and comparator input.

The VCO section requires external components, specifically one capacitor (C1) and one or two resistors (R1, R2), to determine its frequency range and potential offset. The high input impedance of the VCO simplifies the design of associated low-pass filters, offering designers flexibility in component selection.

For signal input, the HEF4046BD can accept direct coupling if the signal swing is within the standard HE4000B family logic levels, or capacitive coupling for smaller swings. The device includes an inhibit input for controlling the VCO and source follower, minimizing power consumption when not in use.

Available in multiple package types including 16-lead DIL (plastic and ceramic) and 16-lead SO (plastic), the HEF4046BD is suitable for various circuit designs requiring phase-locked loop functionality.

HEF4046BD Quick Information

Product Type: Phase-locked loop IC

Series: HE4000B

Canonical Name: HEF4046B Phase-locked loop

HEF4046BD Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

HEF4046BD Estimated Pricing

Qty	Low	High
1+	$165.89	$165.89

Estimated market price range - modelled values for guidance only, not live distributor offers.

HEF4046BD Features

Integrated voltage-controlled oscillator (VCO).
Two distinct phase comparators included.
External components set VCO frequency.
Multiple package options available.
Inhibit input for power control.

HEF4046BD Applications

Frequency synthesis applications.
Phase and frequency modulation.
Signal synchronization circuits.
Demodulation of FSK signals.

HEF4046BD FAQs

5 frequently asked questions generated from this part’s specifications.

What is the HEF4046BD?

The HEF4046BD is a Phase-locked loop (PLL) circuit that consists of a linear voltage controlled oscillator (VCO) and two different phase comparators.

What external components are required for the VCO?

The VCO requires one external capacitor (C1) and one or two external resistors (R1 or R1 and R2).

What are the available package types for the HEF4046BD?

The HEF4046BD is available in 16-lead DIL plastic, 16-lead DIL ceramic (cerdip), and 16-lead SO plastic packages.

How is the VCO enabled or disabled?

A LOW level at the inhibit input (pin 5) enables the VCO and the source follower, while a HIGH level turns off both to minimize stand-by power consumption.

What type of phase comparator is used?

Phase comparator 1 is an EXCLUSIVE-OR network. For maximum lock range, the signal and comparator input frequencies must have a 50% duty factor.