PIC16F77T-I/L Equivalent & Substitute Parts

Part Overview

The PIC16F77T-I/L is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring 14KB FLASH program memory and integrated connectivity interfaces. The device operates at 20MHz with a 44-PLCC package and is currently in active production status. Identifying equivalent and substitute parts is essential for supply chain continuity, inventory optimization, and design flexibility when the primary part number becomes unavailable or when alternative packaging configurations are required.

Substiute Parts

PIC16F77T-I/L

Microchip TechnologyIn Stock: 1223PIC16F77T-I/L Datasheet

Current PartRFQ

PIC16F77-I/L

Microchip TechnologyIn Stock: 2462PIC16F77-I/L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F77T-I/L is determined by strict alignment of the following critical parameters:

• Core Processor Architecture: Must be PIC (8-bit)
• Program Memory: 14KB (8K x 14) FLASH
• RAM Configuration: 368 x 8
• Operating Speed: 20MHz
• I/O Count: 33 pins
• Supply Voltage Range: 4V ~ 5.5V
• Package Type: 44-LCC (J-Lead) with 44-PLCC footprint
• Connectivity Interfaces: I2C, SPI, UART/USART
• Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT
• Data Converter: A/D 8x8b
• Temperature Range: -40°C ~ 85°C

The PIC16F77-I/L qualifies as a direct substitute based on identical electrical specifications, memory configuration, I/O architecture, and functional peripherals. The primary difference is packaging format: the main part uses Tape & Reel (TR) packaging, while the substitute uses Tube packaging. Both maintain the same 44-PLCC footprint and mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16F77T-I/L and PIC16F77-I/L are active production devices from Microchip Technology with identical electrical and functional specifications. Selection between these parts should be based on the following criteria:

Packaging and Supply Chain Considerations: The PIC16F77T-I/L is supplied in Tape & Reel format, suitable for high-volume automated assembly operations. The PIC16F77-I/L is supplied in Tube packaging, appropriate for lower-volume applications or manual assembly processes.

Moisture Sensitivity: The PIC16F77-I/L features MSL 1 (Unlimited shelf life), providing superior moisture tolerance compared to the PIC16F77T-I/L with MSL 3 (168-hour limit). This distinction is relevant for long-term storage and applications in high-humidity environments.

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring compatibility with current environmental and regulatory requirements. Both are classified under ECCN EAR99 and HTSUS 8542.31.0001.

Functional Equivalence: All electrical parameters, memory configurations, I/O architecture, connectivity interfaces, and peripheral functions are identical, ensuring direct functional interchangeability in circuit design and firmware implementation.

Frequently Asked Questions (FAQ)

Q: Can PIC16F77-I/L replace PIC16F77T-I/L in production assembly?

A: Yes. Both parts are electrically and functionally identical. The primary difference is packaging format (Tube vs. Tape & Reel). If your assembly process accommodates Tube packaging, direct substitution is valid. Verify that your pick-and-place equipment or manual assembly workflow supports the alternative packaging format.

Q: What is the significance of the MSL rating difference?

A: MSL 3 (PIC16F77T-I/L) allows 168 hours of shelf life at specified humidity levels before baking is required. MSL 1 (PIC16F77-I/L) has unlimited shelf life. For applications with extended storage periods or high-humidity environments, the PIC16F77-I/L offers superior moisture tolerance without additional desiccant handling requirements.

Q: Are the pin configurations and footprints identical?

A: Yes. Both parts use the 44-LCC (J-Lead) package with 44-PLCC footprint dimensions of 16.59x16.59mm. PCB layouts and socket designs are fully compatible.

Q: Do both parts support the same firmware and development tools?

A: Yes. Both parts share identical core processor architecture, memory configuration, and peripheral set. Firmware developed for one part is directly compatible with the other. Development tools, compilers, and programming equipment support both part numbers without modification.

Q: What are the inventory implications of using either part?

A: PIC16F77T-I/L inventory: 1123 Pcs. PIC16F77-I/L inventory: 2436 Pcs. The substitute part offers higher current availability, which may reduce lead times and improve supply chain flexibility.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS3 compliance, REACH Unaffected status, and regulatory classifications (ECCN EAR99, HTSUS 8542.31.0001).