PIC16F74T-I/PT Equivalent & Substitute Parts

Part Overview

The PIC16F74T-I/PT 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 operates at 20MHz with a supply voltage range of 4V to 5.5V. The part is currently in active production status and is ROHS3 compliant. Identifying equivalent and substitute parts is necessary when the primary packaging format (Tape & Reel) is unavailable or when alternative sourcing is required while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Core Processor	PIC
Core Size	8-Bit
Speed	20MHz
Program Memory Size	7KB (4K x 14)
Program Memory Type	FLASH
RAM Size	192 x 8
Voltage - Supply (Vcc/Vdd)	4V ~ 5.5V
Number of I/O	33
Data Converters	A/D 8x8b
Connectivity	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	44-TQFP (10x10)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the PIC16F74T-I/PT is determined by strict equivalence across all electrical and mechanical parameters. The primary substitution criterion is the base product number PIC16F74, which defines the core microcontroller architecture, memory configuration, and peripheral set. All substitute parts must maintain identical specifications for:

Core processor type (PIC)
Core size (8-Bit)
Operating frequency (20MHz)
Program memory capacity and type (7KB FLASH)
RAM configuration (192 x 8)
Supply voltage range (4V ~ 5.5V)
I/O count (33 pins)
Peripheral feature set (Brown-out Detect/Reset, POR, PWM, WDT)
Connectivity interfaces (I2C, SPI, UART/USART)
Data converter specifications (A/D 8x8b)
Operating temperature range (-40°C ~ 85°C)
Package form factor (44-TQFP, 10x10mm)
Surface mount mounting type
Compliance certifications (ROHS3, REACH Unaffected)

The only allowable variation is in the packaging delivery method (Tape & Reel versus Tray), which does not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	PIC16F74T-I/PT (Main)	PIC16F74-I/PT (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Base Product Number	PIC16F74	PIC16F74
Core Processor	PIC	PIC
Core Size	8-Bit	8-Bit
Speed	20MHz	20MHz
Program Memory Size	7KB (4K x 14)	7KB (4K x 14)
Program Memory Type	FLASH	FLASH
RAM Size	192 x 8	192 x 8
Voltage - Supply (Vcc/Vdd)	4V ~ 5.5V	4V ~ 5.5V
Number of I/O	33	33
Data Converters	A/D 8x8b	A/D 8x8b
Connectivity	I2C, SPI, UART/USART	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	44-TQFP (10x10)	44-TQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Tray
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The PIC16F74-I/PT is a direct functional equivalent to the PIC16F74T-I/PT. Both parts are manufactured by Microchip Technology, maintain active production status, and carry identical ROHS3 and REACH compliance certifications. The distinction between these parts is limited to packaging delivery format: the main part is supplied in Tape & Reel configuration, while the substitute is supplied in Tray configuration. From an engineering perspective, both parts are electrically and mechanically interchangeable for PCB assembly applications. Selection between these variants should be based on procurement requirements, inventory management practices, and assembly line handling specifications rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Are PIC16F74T-I/PT and PIC16F74-I/PT electrically identical?

A: Yes. Both parts share the same base product number (PIC16F74), core architecture, memory configuration, peripheral set, and operating specifications. The only difference is the packaging delivery method.

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

A: Tape & Reel packaging supplies components wound on continuous tape for automated pick-and-place assembly equipment. Tray packaging supplies components in static-dissipative trays for manual handling or alternative assembly processes. Both formats contain the same microcontroller die and lead frame.

Q: Can I use PIC16F74-I/PT as a drop-in replacement for PIC16F74T-I/PT?

A: Yes, provided your assembly process can accommodate the Tray packaging format. The electrical and mechanical specifications are identical, and the 44-TQFP package footprint is the same.

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

A: No. Both parts carry identical ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 3 (168 Hours) ratings.

Q: What is the inventory status of these substitute parts?

A: PIC16F74-I/PT is available with 8816 pieces in stock as new original inventory, compared to 2200 pieces for the PIC16F74T-I/PT variant.

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