PIC16F874AT-I/L Equivalent & Substitute Parts

Part Overview

The PIC16F874AT-I/L is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring moderate processing capability and integrated peripherals. This device features 7KB of FLASH program memory, 192 bytes of RAM, and 128 bytes of EEPROM, with support for I2C, SPI, and UART/USART connectivity. The part is currently in active production status with 8,071 units available in stock. Substitute parts are identified when electrical specifications, memory configurations, and package compatibility remain consistent across the product line.

Substiute Parts

PIC16F874AT-I/L

Microchip TechnologyIn Stock: 8170PIC16F874AT-I/L Datasheet

Current PartRFQ

PIC16F874A-I/L

Microchip TechnologyIn Stock: 5000333PIC16F874A-I/L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F874AT-I/L is determined by strict equivalence across the following critical parameters:

• Core Architecture: PIC 8-bit processor
• Memory Configuration: 7KB FLASH (4K x 14), 192 bytes RAM, 128 bytes EEPROM
• Operating Frequency: 20MHz maximum
• Voltage Supply Range: 4V ~ 5.5V
• I/O Count: 33 pins
• Package Type: 44-LCC (J-Lead) surface mount
• Connectivity Interfaces: I2C, SPI, UART/USART
• Peripheral Set: Brown-out Detect/Reset, POR, PWM, WDT
• Data Conversion: A/D 8x10b

The PIC16F874A-I/L meets all electrical and functional specifications required for direct substitution. Differences in packaging format (Tube vs. Tape & Reel) and moisture sensitivity level do not affect electrical compatibility or functional performance in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16F874AT-I/L and PIC16F874A-I/L are active production devices from Microchip Technology with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on supply chain availability and packaging requirements. The PIC16F874AT-I/L is supplied in Tape & Reel format with MSL 3 rating, while the PIC16F874A-I/L is supplied in Tube format with MSL 1 rating. For applications with extended storage periods or high-humidity environments, the MSL 1 rating of the PIC16F874A-I/L provides superior moisture protection. Both devices are electrically and functionally equivalent for circuit design purposes.

Frequently Asked Questions (FAQ)

Q: Are PIC16F874AT-I/L and PIC16F874A-I/L pin-compatible?

A: Yes. Both devices use the 44-LCC (J-Lead) package with identical pinout and 33 I/O pins. They are directly interchangeable at the socket level.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel packaging is optimized for automated assembly lines, while Tube packaging is suitable for manual handling and smaller volume applications. Electrical performance is identical.

Q: What does MSL rating mean, and why does it differ between these parts?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be stored at specified humidity levels before requiring baking. MSL 3 allows 168 hours of storage, while MSL 1 allows unlimited storage. For long-term inventory or humid environments, MSL 1 is preferable.

Q: Can I use PIC16F874A-I/L as a direct replacement for PIC16F874AT-I/L in production?

A: Yes. Both parts meet identical electrical specifications, memory configurations, and functional requirements. Substitution is valid for all circuit applications.

Q: Are there any compliance differences between these parts?

A: No. Both devices carry ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Regulatory compliance is equivalent.