PCF1175CT/F2,118 Equivalent & Substitute Parts

Part Overview

The PCF1175CT/F2,118 is a 7-segment LCD driver IC manufactured by NXP USA Inc., designed to drive 4-digit LCD displays. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs, maintenance applications, and production continuity. The part operates across a 3V to 6V supply range with low current consumption of 950 µA, suitable for battery-powered and portable display applications.

Substiute Parts

PCF1175CT/F2,118

NXP USA Inc.In Stock: 1124PCF1175CT/F2,118 Datasheet

Current PartRFQ

ICM7224IPL+

Analog Devices Inc./Maxim IntegratedIn Stock: 915ICM7224IPL+ Datasheet

MFR RecommendedRFQ

TC7126ACKW

Microchip TechnologyIn Stock: 1093TC7126ACKW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCF1175CT/F2,118 is determined by the following critical parameters:

• Display Driver Function: All substitute parts must be LCD drivers capable of driving 7-segment displays
• Digit Capacity: The original part drives 4 digits; substitutes must support at least 4-digit display capability
• Supply Voltage Compatibility: Operating voltage range of 3V to 6V is the primary electrical constraint
• Mounting Technology: Surface mount packages are preferred for modern PCB designs, though through-hole alternatives are acceptable for legacy applications
• RoHS Compliance: All listed substitutes maintain ROHS3 compliance for regulatory alignment

The two identified substitute parts meet these criteria with variations in digit capacity, package type, and current consumption characteristics.

Parameter Comparison

Engineering Selection Recommendations

ICM7224IPL+ (Analog Devices Inc./Maxim Integrated)

This part is the primary substitute for the PCF1175CT/F2,118. It maintains full voltage compatibility (3V ~ 6V), supports 4.5-digit display capability, and is currently in active production status. The through-hole 40-DIP package requires PCB redesign but offers superior long-term availability. Operating temperature range is -20°C ~ 85°C, which covers most industrial applications. ROHS3 compliance and unlimited MSL rating ensure regulatory and environmental stability. Current consumption of 10 µA is significantly lower than the original part, providing power efficiency benefits.

TC7126ACKW (Microchip Technology)

This part serves as a secondary substitute with important electrical constraints. The supply voltage requirement of 9V is incompatible with the original 3V ~ 6V specification, requiring external voltage regulation or circuit redesign. The 4.6-digit capacity is below the original 4-digit specification. Operating temperature range of 0°C ~ 70°C is narrower than the original. The 44-QFP surface mount package maintains PCB form factor compatibility. This part is suitable only when voltage conversion is feasible and reduced digit capacity is acceptable. ROHS3 compliance and active product status support long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the ICM7224IPL+ directly replace the PCF1175CT/F2,118 without circuit modifications?

A: Electrical compatibility is maintained (3V ~ 6V supply voltage range), but the package change from 28-SOIC to 40-DIP requires PCB redesign. Pin-to-pin compatibility cannot be assumed; schematic review is mandatory.

Q: Why is the TC7126ACKW listed as a substitute if it requires 9V supply?

A: The TC7126ACKW is included as a functional alternative for applications where external voltage regulation is implemented. Direct substitution without circuit modification is not possible due to the 9V requirement.

Q: What is the significance of the digit capacity difference between the original part and substitutes?

A: The PCF1175CT/F2,118 drives 4 digits. The ICM7224IPL+ supports 4.5 digits, providing additional display capability. The TC7126ACKW supports 4.6 digits, which may limit display functionality in applications requiring full 4-digit resolution.

Q: Are all listed parts RoHS compliant?

A: Yes. The PCF1175CT/F2,118, ICM7224IPL+, and TC7126ACKW are all ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What is the impact of the different operating temperature ranges?

A: The original part operates from -40°C ~ 85°C. The ICM7224IPL+ operates from -20°C ~ 85°C, suitable for most industrial applications but with reduced low-temperature capability. The TC7126ACKW operates from 0°C ~ 70°C, with further restrictions on both low and high temperature extremes.

Q: How does current consumption affect part selection?

A: The original part consumes 950 µA. The ICM7224IPL+ consumes only 10 µA, providing significant power savings in battery-powered applications. Lower current consumption reduces thermal load and extends battery life.

Q: What packaging considerations should guide substitution decisions?

A: The original 28-SOIC surface mount package is compact. The ICM7224IPL+ uses 40-DIP through-hole packaging, requiring larger PCB footprint and manual assembly capability. The TC7126ACKW uses 44-QFP surface mount, maintaining compact form factor but with higher pin count and finer pitch.