IP4251CZ8-4-TTL132

Overview

The IP4251CZ8-4-TTL132 is a passive RC low-pass filter array manufactured by NXP USA Inc. It integrates four independent filtering channels within an 8-pin UFDFN exposed pad package. The component functions as a second-order Pi-network EMI/RFI filter, designed to suppress electromagnetic interference on data lines. Key electrical parameters include a rated voltage of 5.6V and a maximum DC resistance of 120 ohms per channel. The total capacitance for the network is specified at 10pF, with each channel providing 100 ohms of resistance.

Feature Summary

• Integrates four-channel passive RC low-pass filtering architecture
• Provides combined EMI suppression and electrostatic discharge protection
• Utilizes compact surface-mount packaging for portable electronics

Applications

• Filtering RF signals on I/O ports of portable devices
• Data line protection in consumer electronics
• EMI reduction for high-speed digital interfaces

Procurement Notes

Verify the complete part number including the suffix -TTL132 to ensure correct tape-and-reel packaging configuration. Confirm that the 8-UFDFN footprint matches your PCB layout requirements. Cross-reference the 5.6V rating against your system's operating voltage to prevent overstress. Ensure compatibility with the specific signal integrity needs of your application before finalizing procurement.

Selection Notes

Select this component when a multi-channel solution is required for simultaneous EMI filtering and ESD protection. The 4-channel configuration suits applications with multiple data lines needing uniform suppression characteristics. Consider the 100-ohm resistance value for impedance matching requirements. The exposed pad design aids in thermal dissipation and mechanical stability during assembly processes.

Part Context

This device belongs to the IP4251 series of integrated filter networks from NXP Semiconductors. The series includes variants with different channel counts, such as 6-channel and 8-channel options. These components are specifically engineered for portable electronic equipment where space constraints and signal integrity are critical design factors.

Replacement Considerations

Confirm pinout compatibility before substituting with similar parts like IP4251CZ8-4. Verify that alternative components maintain the same 5.6V rating and 10pF capacitance values. Ensure the replacement package matches the 8-UFDFN dimensions to avoid rework.