PIC16LC554T-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC554T-04E/SS 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 in a 20-SSOP surface mount package. This device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated Power-On Reset (POR) and Watchdog Timer (WDT) peripherals. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

PIC16LC554T-04E/SS

Microchip TechnologyIn Stock: 1153PIC16LC554T-04E/SS Datasheet

Current PartRFQ

PIC16LC554-04I/SS

Microchip TechnologyIn Stock: 781PIC16LC554-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PIC16LC554T-04E/SS 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 configuration (80 x 8)
• I/O pin count (13)
• Supply voltage range (2.5V ~ 5.5V)
• Package type and dimensions (20-SSOP)
• Mounting technology (Surface Mount)

The substitute part PIC16LC554-04I/SS meets all these criteria and is functionally equivalent. The primary difference lies in the operating temperature range and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC554-04I/SS is a direct functional substitute for the PIC16LC554T-04E/SS. Both parts are ROHS3 compliant and share identical electrical specifications, memory configurations, and package dimensions. The substitute part carries Active product status, ensuring continued availability and supply chain support compared to the obsolete main part.

The operating temperature range difference (-40°C ~ 85°C for the substitute versus -40°C ~ 125°C for the main part) must be evaluated against application requirements. Applications operating within the -40°C to 85°C range will experience no functional limitation. Applications requiring operation above 85°C require alternative component selection outside this substitute group.

Both parts are supplied in 20-SSOP surface mount packages with identical pinout and mechanical dimensions, enabling direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

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

A: The PIC16LC554-04I/SS is functionally equivalent for applications operating within the -40°C to 85°C temperature range. Applications requiring operation above 85°C require alternative component selection.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Obsolete versus Active) and maximum operating temperature (125°C versus 85°C). All electrical specifications, memory capacity, I/O configuration, and package type are identical.

Q: Are the packages mechanically compatible?

A: Yes. Both parts use the 20-SSOP package with identical dimensions (0.209", 5.30mm Width) and pinout, enabling direct board-level substitution without PCB modifications.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry REACH Unaffected status and EAR99 ECCN classification.

Q: Why is the main part classified as obsolete?

A: Microchip Technology has discontinued the PIC16LC554T-04E/SS. The PIC16LC554-04I/SS remains in active production and is the recommended substitute for new designs and ongoing production requirements.