PCF1178CT,112 Equivalent & Substitute Parts

Part Overview

The PCF1178CT,112 is a 7-segment LCD driver IC manufactured by NXP USA Inc., designed to drive 4-digit LCD displays. This Surface Mount device operates across a 3V to 6V supply range with minimal current consumption of 950 µA. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this component is specified.

Substiute Parts

PCF1178CT,112

NXP USA Inc.In Stock: 1058PCF1178CT,112 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 of the PCF1178CT,112 is determined by the following critical parameters:

• Display driver capability for 7-segment LCD configurations
• Supply voltage compatibility within the 3V to 6V range
• Operating temperature range support
• Package form factor and mounting technology
• Regulatory compliance (RoHS3, REACH)

The identified substitute parts maintain functional equivalence through support of 7-segment LCD driving with overlapping voltage specifications. However, differences exist in digit capacity, current consumption, package type, and temperature operating ranges. Selection of a substitute requires alignment with the specific application requirements regarding display resolution, thermal environment, and PCB assembly constraints.

Parameter Comparison

Engineering Selection Recommendations

Selection between substitute parts must account for the following factors based on provided specifications:

ICM7224IPL+ (Analog Devices Inc./Maxim Integrated): This part maintains voltage supply compatibility (3V ~ 6V) with the original PCF1178CT,112 and supports 7-segment LCD driving. The Active product status ensures ongoing availability and manufacturer support. However, the Through Hole mounting type represents a significant departure from the original Surface Mount configuration, requiring PCB redesign. The 40-DIP package footprint is substantially larger than the 28-SOIC original. Operating temperature range is narrower (-20°C to 85°C versus -40°C to 85°C). Current consumption is significantly lower at 10 µA.

TC7126ACKW (Microchip Technology): This part maintains Surface Mount assembly compatibility and Active product status. However, the supply voltage specification of 9V is incompatible with the original 3V to 6V requirement. Operating temperature range (0°C to 70°C) is narrower than the original specification. The 44-QFP package differs from the original 28-SOIC footprint. This part is suitable only for applications where 9V supply voltage is available and temperature range constraints are acceptable.

Frequently Asked Questions (FAQ)

Q: Can ICM7224IPL+ be used as a direct replacement for PCF1178CT,112?

A: Functional equivalence exists for 7-segment LCD driving capability and voltage supply range (3V ~ 6V). However, the Through Hole 40-DIP package requires PCB redesign compared to the Surface Mount 28-SOIC original. The narrower operating temperature range (-20°C to 85°C) may not suit applications requiring -40°C operation.

Q: Is TC7126ACKW compatible with PCF1178CT,112 applications?

A: TC7126ACKW supports 7-segment LCD driving and maintains Surface Mount assembly. However, the 9V supply voltage requirement is incompatible with the original 3V to 6V specification. This part is suitable only for redesigned systems with 9V power availability and 0°C to 70°C operating temperature requirements.

Q: What are the key differences in package form factors?

A: PCF1178CT,112 uses 28-SOIC Surface Mount packaging. ICM7224IPL+ uses 40-DIP Through Hole packaging, requiring different PCB layout and assembly processes. TC7126ACKW uses 44-QFP Surface Mount packaging, which differs in pin count and footprint dimensions from the original.

Q: How do digit capacities differ among these parts?

A: PCF1178CT,112 drives 4-digit displays. ICM7224IPL+ supports 4.5-digit displays, providing additional resolution. TC7126ACKW supports 4.6-digit displays, offering reduced resolution compared to the original.

Q: Are all parts RoHS3 compliant?

A: Yes. PCF1178CT,112, ICM7224IPL+, and TC7126ACKW are all ROHS3 Compliant with REACH Unaffected status, meeting current environmental regulatory requirements.