PIC16LC558T-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC558T-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP program memory, 128 x 8 bytes of RAM, and 13 I/O pins in a 20-SSOP surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

PIC16LC558T-04E/SS

Microchip TechnologyIn Stock: 709PIC16LC558T-04E/SS Datasheet

Current PartRFQ

PIC16LC558-04I/SS

Microchip TechnologyIn Stock: 1115PIC16LC558-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC558T-04E/SS is determined by strict alignment of the following parameters:

• Core Processor & Architecture: PIC 8-bit processor
• Program Memory: 4.6KB (2K x 14) OTP
• RAM Configuration: 128 x 8 bytes
• I/O Count: 13 pins
• Supply Voltage Range: 2.5V ~ 5.5V
• Package Type: 20-SSOP form factor
• Peripheral Set: POR and WDT functionality

The substitute part PIC16LC558-04I/SS maintains identical core specifications, memory architecture, I/O configuration, and package format. Differences in operating temperature range and product status do not affect functional substitution within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC558-04I/SS is a direct functional equivalent to the PIC16LC558T-04E/SS. Both devices share identical electrical specifications, memory architecture, I/O configuration, and package format. The substitute part carries Active product status, ensuring continued availability and supply chain support compared to the Obsolete main part.

Both parts maintain ROHS3 compliance and carry identical REACH and ECCN classifications, supporting regulatory requirements for industrial and commercial applications. 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 specific application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can PIC16LC558-04I/SS directly replace PIC16LC558T-04E/SS in existing designs?

A: Yes. Both parts share identical core processor architecture, memory configuration (4.6KB OTP program memory, 128 x 8 RAM), I/O pin count (13), supply voltage range (2.5V ~ 5.5V), and 20-SSOP package format. Electrical and mechanical compatibility is complete.

Q: What is the significance of the operating temperature range difference?

A: The main part operates from -40°C to 125°C, while the substitute operates from -40°C to 85°C. Applications requiring operation above 85°C must retain the original part. Applications within the -40°C to 85°C range can use either part.

Q: Why is the main part listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The substitute part maintains Active status, providing assured supply availability for new production and design updates.

Q: Are there compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS3, REACH, and ECCN classifications. Moisture sensitivity level (MSL 1 - Unlimited) is identical for both devices.

Q: What is the significance of the part number suffix difference (T vs. I)?

A: The suffix indicates temperature grade classification. The "T" suffix denotes the extended temperature range (-40°C ~ 125°C), while the "I" suffix denotes the industrial temperature range (-40°C ~ 85°C). Core functionality and electrical specifications remain identical.