PIC18LF44J11T-I/PT Equivalent & Substitute Parts

Part Overview

The PIC18LF44J11T-I/PT is an 8-bit microcontroller from Microchip Technology's PIC® XLP™ 18J series, designed for embedded applications requiring low power operation. This device features 16KB of FLASH program memory, 3.8KB of RAM, and operates at up to 48MHz with a supply voltage range of 2V to 3.6V. The part is actively produced and widely used in battery-powered and energy-constrained embedded systems. Identifying equivalent and substitute parts is essential for supply chain continuity, inventory optimization, and design flexibility across manufacturing batches and procurement cycles.

Substiute Parts

PIC18LF44J11T-I/PT

Microchip TechnologyIn Stock: 810PIC18LF44J11T-I/PT Datasheet

Current PartRFQ

PIC18LF44J11-I/PT

Microchip TechnologyIn Stock: 1309PIC18LF44J11-I/PT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC18LF44J11T-I/PT is determined by strict equivalence across the following critical parameters:

• Manufacturer and Series: Both parts must originate from Microchip Technology and belong to the PIC® XLP™ 18J series to ensure firmware compatibility and peripheral consistency.
• Core Architecture: 8-bit PIC core processor with identical instruction set and memory organization.
• Memory Configuration: Identical 16KB FLASH program memory (8K x 16) and 3.8KB RAM (3.8K x 8) to ensure code and data space compatibility.
• Operating Frequency: 48MHz maximum speed to maintain timing-critical application performance.
• Voltage Supply Range: 2V to 3.6V operating range for low-power applications.
• I/O Count and Connectivity: 34 I/O pins with I2C, SPI, and UART/USART interfaces.
• Package and Pinout: 44-TQFP (10x10) surface mount package with identical pin assignments.
• Compliance and Certifications: ROHS3 compliance, REACH unaffected status, and MSL 3 rating.

The primary difference between the main part and its substitute lies in packaging configuration (Tray vs. standard packaging), which does not affect electrical or functional performance.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC18LF44J11T-I/PT and PIC18LF44J11-I/PT are functionally equivalent devices with identical electrical specifications, memory configurations, and peripheral sets. Selection between these parts should be based on the following factors:

• Product Status: Both parts maintain Active status with Microchip Technology, ensuring continued availability and support.
• Compliance Requirements: Both devices meet ROHS3 compliance and REACH unaffected status, suitable for applications subject to environmental regulations.
• Packaging Configuration: The primary distinction is packaging format. The PIC18LF44J11T-I/PT uses standard packaging, while the PIC18LF44J11-I/PT is supplied in Tray packaging. Tray packaging is typically preferred for high-volume manufacturing and automated assembly processes.
• Supply Chain Considerations: Inventory availability may differ between variants. The PIC18LF44J11-I/PT currently shows higher stock levels (1241 Pcs) compared to the PIC18LF44J11T-I/PT (730 Pcs), making it suitable for immediate procurement needs.
• Moisture Sensitivity: Both parts carry MSL 3 rating (168 Hours), requiring identical handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Are the PIC18LF44J11T-I/PT and PIC18LF44J11-I/PT pin-compatible?

A: Yes. Both devices use the 44-TQFP (10x10) package with identical pinout and electrical characteristics. They are direct substitutes at the PCB level.

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

A: The primary difference is packaging configuration. The PIC18LF44J11T-I/PT uses standard packaging, while the PIC18LF44J11-I/PT is supplied in Tray format. This distinction does not affect device functionality or electrical performance.

Q: Can I use PIC18LF44J11-I/PT as a drop-in replacement for PIC18LF44J11T-I/PT?

A: Yes. The devices are electrically and functionally identical. Firmware, PCB layout, and application code require no modifications for substitution.

Q: Do these parts have the same memory configuration?

A: Yes. Both devices feature 16KB FLASH program memory (8K x 16), 3.8KB RAM (3.8K x 8), and identical peripheral sets including I2C, SPI, UART/USART, PWM, and watchdog timer functionality.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 3 (168 Hours) moisture sensitivity ratings.

Q: Which part should I select for new designs?

A: Both parts are suitable for new designs. Selection should be based on packaging requirements (Tray vs. standard) and current supply availability. For high-volume manufacturing, Tray packaging (PIC18LF44J11-I/PT) is typically preferred.

Q: What is the operating temperature range for both devices?

A: Both devices operate across -40°C to 85°C (TA), suitable for industrial and commercial temperature environments.