TLC14CD

Overview

The TLC14CD is a monolithic Butterworth fourth-order low-pass switched-capacitor filter manufactured by Texas Instruments. It operates on dual supplies ranging from ±2.5 V to ±6 V, or single supplies up to 12 V. The device provides a clock-to-cutoff frequency ratio of 100:1 with less than ±1% error. It supports self-clocking, TTL-compatible, and CMOS-compatible clock inputs via the Level Shift (LS) terminal. The cutoff frequency range extends from 0.05 Hz to 20 kHz. It is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Monolithic implementation of a Butterworth fourth-order low-pass filter function
• Cutoff frequency stability dependent solely on external clock frequency
• Flexible clock input options including self-clocking, TTL, and CMOS compatibility
• Designed for interchangeability with National Semiconductor MF4-100

Applications

• Precision analog signal processing requiring stable low-pass filtering
• Data acquisition systems utilizing switched-capacitor techniques
• Audio and instrumentation circuits needing precise frequency response

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm status and material type. Ensure the selected variant matches the required operating temperature range and packaging format. Confirm RoHS compliance and lead finish specifications prior to procurement to meet project requirements.

Selection Notes

Select the TLC14CD when a 100:1 clock-to-cutoff ratio is required compared to the 50:1 ratio of the TLC04CD. Choose this component if the application demands a cutoff frequency range extending down to 0.05 Hz. Verify that the system can provide the necessary external clock signals or components for self-clocking configurations.

Part Context

This component belongs to the TLC04/MF4A family of switched-capacitor filters. It serves as a direct replacement for the National Semiconductor MF4-100. The 'CD' suffix indicates an active production status in an SOIC package with a commercial temperature range of 0°C to 70°C.

Replacement Considerations

Public confirmed substitute part numbers include TLC04CD/MF4A-50CD and TLC14CP/MF4A-100CP.