NJU6533FH2 Equivalent & Substitute Parts

Part Overview

The NJU6533FH2 is an LCD driver integrated circuit manufactured by Nisshinbo Micro Devices Inc., designed for 32-segment LCD display applications. This device operates as a serial interface LCD driver in a 52-LQFP surface mount package. The NJU6533FH2 is classified as obsolete, necessitating identification of equivalent and substitute components for new designs or production continuity. Substitute parts must maintain functional compatibility with 32-segment LCD configurations while accommodating differences in package form factors and electrical specifications.

Substiute Parts

NJU6533FH2

Nisshinbo Micro Devices Inc.In Stock: 1092NJU6533FH2 Datasheet

Current PartRFQ

NJU6533FR3

Nisshinbo Micro Devices Inc.In Stock: 676NJU6533FR3 Datasheet

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PCF2112CT/1,112

NXP SemiconductorsIn Stock: 885PCF2112CT/1,112 Datasheet

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PCF8577CT/3,118

NXP USA Inc.In Stock: 39369PCF8577CT/3,118 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NJU6533FH2 is determined by the following critical parameters: display type (LCD), segment configuration (32 segments), interface protocol (serial communication), supply voltage range compatibility, operating temperature range, and surface mount capability. Substitute parts must support 32-segment LCD driving functionality and operate within the specified temperature and voltage parameters.

The substitute parts identified fall into two categories based on interface type and package configuration:

Category 1: Same Manufacturer, Reduced Pin Count The NJU6533FR3 maintains the same base product series (NJU6533) with identical functional specifications but in a smaller 48-LQFP package. This part is active and currently available.

Category 2: Alternative Manufacturers, Different Package The PCF2112CT/1,112 and PCF8577CT/3,118 are NXP Semiconductors products offering 32-segment LCD driver functionality in 40-VSO packages. These parts operate with different interface protocols and supply current specifications but maintain core LCD driving capability and temperature range compatibility.

Parameter Comparison

Engineering Selection Recommendations

NJU6533FR3 is the primary substitute for direct replacement within the Nisshinbo product line. This part maintains identical electrical specifications and serial interface protocol while reducing package size from 52-LQFP to 48-LQFP. The NJU6533FR3 is currently active and available in production quantities, making it suitable for new designs requiring the same functional performance with reduced board space requirements.

PCF2112CT/1,112 serves as an alternative substitute for applications where NXP component qualification is acceptable. This part provides 32-segment LCD driving capability with a smaller 40-VSO package footprint. The supply voltage range (2.25V ~ 6V) encompasses the original specification. However, the supply current specification of 20 µA exceeds the original 7 µA rating. This part maintains active product status and ROHS3 compliance with improved moisture sensitivity characteristics (MSL 1).

PCF8577CT/3,118 is not recommended for new designs due to obsolete product status, despite extensive inventory availability. This part operates with I2C interface protocol rather than serial interface, requiring firmware and circuit modifications. Selection of this part should be limited to legacy system maintenance where I2C protocol compatibility is already established.

Frequently Asked Questions (FAQ)

Q: Can the NJU6533FR3 be used as a direct replacement for the NJU6533FH2?

A: The NJU6533FR3 provides functional equivalence for 32-segment LCD driving applications with identical electrical specifications and serial interface protocol. The primary difference is package size reduction from 52-LQFP (10x10) to 48-LQFP (7x7), requiring PCB layout modifications. No firmware or circuit changes are necessary.

Q: What are the key differences between the NXP substitute parts?

A: PCF2112CT/1,112 and PCF8577CT/3,118 differ in interface protocol. PCF2112CT/1,112 uses serial interface matching the original NJU6533FH2, while PCF8577CT/3,118 uses I2C interface. PCF2112CT/1,112 is active; PCF8577CT/3,118 is obsolete. Both use 40-VSO packages with improved moisture sensitivity ratings.

Q: Are there voltage supply compatibility concerns with substitute parts?

A: All substitute parts operate within overlapping voltage ranges. The original NJU6533FH2 operates at 2.4V ~ 5.5V. NJU6533FR3 matches this range exactly. PCF2112CT/1,112 extends to 2.25V ~ 6V, and PCF8577CT/3,118 operates at 2.5V ~ 6V. All ranges are compatible with standard 3.3V and 5V supply systems.

Q: What are the package footprint implications for substitution?

A: The NJU6533FH2 uses a 52-pin LQFP package (10x10mm). The NJU6533FR3 reduces this to 48-pin LQFP (7x7mm). The NXP alternatives use 40-pin BSOP packages (0.295" width, 7.50mm). Package changes require PCB redesign and may affect board space allocation and thermal management considerations.

Q: Should the PCF8577CT/3,118 be selected for new designs?

A: No. Although PCF8577CT/3,118 offers high inventory availability, its obsolete product status and I2C interface protocol (differing from the original serial interface) make it unsuitable for new designs. This part should be reserved for legacy system maintenance only.

Q: What is the impact of different supply current specifications?

A: The original NJU6533FH2 and NJU6533FR3 both specify 7 µA supply current. The PCF2112CT/1,112 specifies 20 µA, representing a 2.86x increase. This difference affects power budget calculations for battery-powered or low-power applications. The PCF8577CT/3,118 does not specify supply current, limiting power analysis capability.

Q: Are all substitute parts RoHS compliant?

A: Yes. The NJU6533FH2 and NJU6533FR3 are RoHS Compliant. The PCF2112CT/1,112 and PCF8577CT/3,118 are ROHS3 Compliant, representing enhanced environmental compliance standards.