CD74HCT7046AM

Overview

The CD74HCT7046AM is a Phase Locked Loop (PLL) integrated circuit manufactured by Harris Corporation. It utilizes CMOS technology and operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal voltage of 5 V. The device supports an operating temperature range from -40 °C to 125 °C. It features a single function block housed in a 16-terminal surface-mount package without leads, classified as an uncased chip or die form factor.

Feature Summary

• Integrates a complete phase-locked loop system on a single CMOS chip
• Designed for high-temperature automotive applications
• Supports surface-mount installation via leadless terminal configuration

Applications

• Frequency synthesis circuits
• Clock recovery systems
• Motor speed control loops

Procurement Notes

Verify the specific package designation against official datasheets, as the component is described as a die or uncased chip rather than a standard plastic封装. Confirm that the supplier provides appropriate handling protocols for bare die or exposed pad components. Ensure the lot traceability meets automotive qualification standards required for the specified temperature range.

Selection Notes

Select this component when a robust PLL solution is needed for harsh environments requiring operation up to 125 °C. The HCT logic compatibility ensures interface ease with standard TTL/CMOS digital systems. Verify that the PCB layout accommodates the specific thermal and electrical requirements of the leadless package type provided by Harris.

Part Context

This part belongs to the 74HCT series of logic devices, which are designed for compatibility with standard 5V logic families. The 7046A variant specifically denotes a PLL with a lock detector. Harris Corporation was a prominent manufacturer of such analog-mixed signal ICs before its semiconductor assets were acquired by other entities, making this a legacy component.

Replacement Considerations

Cross-reference with Texas Instruments equivalents such as the CD74HC7046AM or CD74HCT7046AM. Note that HC variants may differ in drive strength and noise immunity compared to HCT. Verify pinout compatibility and ensure the substitute supports the same 125 °C operating temperature if automotive reliability is required.