PIC16F685T-I/SO Equivalent & Substitute Parts

Part Overview

The PIC16F685T-I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring compact flash memory and integrated peripherals. This device operates at 20MHz with 7KB of FLASH program memory and includes brown-out detection, PWM, and watchdog timer functionality. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when packaging or supplier configurations differ 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
EEPROM Size	256 x 8
RAM Size	256 x 8
Number of I/O	18
Data Converters	A/D 12x10b
Voltage Supply (Vcc/Vdd)	2V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F685T-I/SO is determined by strict equivalence across all electrical and mechanical parameters. The primary differentiator between the main part and identified substitutes is the supplier packaging configuration. Both the main part (PIC16F685T-I/SO) and the substitute part (PIC16F685-I/SO) share identical specifications across the following critical parameters:

Core processor architecture (PIC)
Memory configuration (7KB FLASH, 256 x 8 EEPROM, 256 x 8 RAM)
Operating frequency (20MHz)
I/O count (18 pins)
Voltage supply range (2V ~ 5.5V)
Temperature operating range (-40°C ~ 85°C)
Physical package (20-SOIC)
Compliance certifications (ROHS3, REACH Unaffected)

The only variation is the supplier device packaging: the main part is supplied in Cut Tape (CT) & Digi-Reel® format, while the substitute is supplied in Tube format. Both maintain identical component functionality and pinout.

Parameter Comparison

Parameter	PIC16F685T-I/SO (Main)	PIC16F685-I/SO (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Series	PIC® 16F	PIC® 16F
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
EEPROM Size	256 x 8	256 x 8
RAM Size	256 x 8	256 x 8
Number of I/O	18	18
Data Converters	A/D 12x10b	A/D 12x10b
Voltage Supply (Vcc/Vdd)	2V ~ 5.5V	2V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tube

Engineering Selection Recommendations

Both the PIC16F685T-I/SO and PIC16F685-I/SO are active production devices from Microchip Technology with identical electrical specifications and compliance certifications. Selection between these parts is based solely on packaging and supply chain requirements:

PIC16F685T-I/SO: Specified for applications requiring Cut Tape or Digi-Reel® packaging formats, suitable for automated pick-and-place assembly operations.
PIC16F685-I/SO: Specified for applications where Tube packaging is acceptable or preferred, typically for manual assembly or alternative handling workflows.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across industrial and commercial applications. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity restrictions for either variant.

Frequently Asked Questions (FAQ)

Q: Can PIC16F685-I/SO be used as a direct replacement for PIC16F685T-I/SO?

A: Yes. Both parts are electrically and mechanically identical. The only difference is the supplier packaging format (Tube versus Cut Tape & Digi-Reel®). Pinout, memory configuration, operating parameters, and compliance certifications are identical.

Q: What is the difference between Cut Tape & Digi-Reel® and Tube packaging?

A: Cut Tape & Digi-Reel® packaging is optimized for automated assembly lines with continuous tape feeding. Tube packaging contains individual components in a plastic tube, suitable for manual assembly or lower-volume production runs. Both formats contain the same component.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate at 20MHz, support the same voltage range (2V ~ 5.5V), provide identical memory configurations (7KB FLASH, 256 x 8 EEPROM, 256 x 8 RAM), and include the same peripheral set (brown-out detect/reset, POR, PWM, WDT).

Q: Do both parts have the same compliance certifications?

A: Yes. Both PIC16F685T-I/SO and PIC16F685-I/SO are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). No compliance differences exist between the variants.

Q: What is the pinout compatibility between these parts?

A: Both parts use the 20-SOIC package with identical pinout. No PCB layout modifications are required when substituting between these parts.

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