PIC16LC54A-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC54A-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 768B of OTP (One-Time Programmable) memory and operating at 4MHz. This device is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The part is housed in a 20-SSOP surface mount package and operates across a supply voltage range of 3V to 6.25V with an operating temperature range of -40°C to 125°C.

Substiute Parts

PIC16LC54A-04E/SS

Microchip TechnologyIn Stock: 813PIC16LC54A-04E/SS Datasheet

Current PartRFQ

PIC16LC54A-04I/SS

Microchip TechnologyIn Stock: 2162PIC16LC54A-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC54A-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 (768B OTP)
• RAM configuration (25 x 8)
• I/O pin count (12)
• Supply voltage range (3V ~ 6.25V)
• Package type and dimensions (20-SSOP)
• Peripheral set (POR, WDT)

The PIC16LC54A-04I/SS qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction lies in product status (active vs. obsolete) and operating temperature range variance.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC54A-04I/SS is the active equivalent for the obsolete PIC16LC54A-04E/SS. Both parts maintain identical electrical and functional specifications across all critical parameters. The substitute part carries active product status from Microchip Technology, ensuring ongoing availability and support.

The operating temperature range of the substitute part (-40°C to 85°C) is narrower than the main part (-40°C to 125°C). Applications requiring operation above 85°C must evaluate this limitation against system thermal requirements.

Both parts are ROHS3 compliant and carry MSL rating of 1 (Unlimited), indicating equivalent environmental and handling characteristics. Packaging is identical, supporting direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can PIC16LC54A-04I/SS replace PIC16LC54A-04E/SS in all applications?

A: The substitute part is electrically and functionally equivalent across all specified parameters. The operating temperature range difference (-40°C to 85°C vs. -40°C to 125°C) must be evaluated for applications requiring sustained operation above 85°C ambient temperature.

Q: Are the package dimensions identical?

A: Both parts use the 20-SSOP package with identical dimensions (0.209", 5.30mm Width). PCB footprints and land patterns are directly compatible.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturing and support from Microchip Technology. The substitute part's active status ensures continued availability for procurement and technical support, whereas the main part's obsolete status limits future sourcing options.

Q: Are compliance certifications equivalent?

A: Both parts carry identical ROHS3 compliance and MSL rating of 1 (Unlimited). Compliance certifications are equivalent for environmental and handling requirements.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by equivalence in core processor architecture, core size, operating speed, program memory capacity and type, RAM configuration, I/O pin count, supply voltage range, package type, and peripheral set. All these parameters are identical between the main part and substitute.