PIC16LC554T-04E/SO Equivalent & Substitute Parts

Part Overview

The PIC16LC554T-04E/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 896B of OTP program memory, 80 x 8 bytes of RAM, and 13 I/O pins. This device operates at 4MHz with an external oscillator and supports a supply voltage range of 2.5V to 5.5V. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

PIC16LC554T-04E/SO

Microchip TechnologyIn Stock: 974PIC16LC554T-04E/SO Datasheet

Current PartRFQ

PIC16LC554-04I/SO

Microchip TechnologyIn Stock: 920PIC16LC554-04I/SO Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC554T-04E/SO is determined by strict equivalence across the following critical parameters:

• Core processor architecture (PIC)
• Core size (8-Bit)
• Operating speed (4MHz)
• Program memory capacity and type (896B OTP)
• RAM capacity (80 x 8)
• I/O pin count (13)
• Supply voltage range (2.5V ~ 5.5V)
• Package type and physical dimensions (18-SOIC)
• Peripheral set (POR, WDT)

The PIC16LC554-04I/SO qualifies as a direct substitute based on identical electrical specifications and package compatibility. The primary distinction is the operating temperature range and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC554-04I/SO is the direct functional equivalent of the PIC16LC554T-04E/SO. Both devices share identical electrical specifications, memory architecture, I/O configuration, and package format. The substitute part maintains ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards.

The primary consideration for selection is the operating temperature range. The PIC16LC554T-04E/SO supports -40°C to 125°C, while the PIC16LC554-04I/SO operates within -40°C to 85°C. Applications requiring operation above 85°C must retain the original part number. For applications within the -40°C to 85°C range, the substitute part is electrically and mechanically interchangeable.

The active product status of the PIC16LC554-04I/SO provides superior long-term availability and supply chain continuity compared to the obsolete PIC16LC554T-04E/SO.

Frequently Asked Questions (FAQ)

Q: Can the PIC16LC554-04I/SO replace the PIC16LC554T-04E/SO in all applications?

A: The PIC16LC554-04I/SO is a direct substitute for applications operating within -40°C to 85°C. Applications requiring operation above 85°C must use the original PIC16LC554T-04E/SO or identify an alternative with extended temperature specifications.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 18-SOIC package with identical physical dimensions of 0.295" × 7.50mm width. PCB footprints and assembly processes are fully compatible.

Q: What is the significance of the product status difference?

A: The PIC16LC554T-04E/SO is classified as obsolete, indicating Microchip Technology has discontinued production and support. The PIC16LC554-04I/SO maintains active status, ensuring ongoing availability, technical support, and compliance with current manufacturing standards.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16LC554T-04E/SO and PIC16LC554-04I/SO are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).

Q: Do these parts have identical memory and I/O specifications?

A: Yes. Both devices feature 896B OTP program memory, 80 x 8 bytes of RAM, 13 I/O pins, and identical peripheral sets (POR, WDT). Firmware and hardware designs are fully compatible.