PIC16LC773T-I/SO Equivalent & Substitute Parts

Part Overview

The PIC16LC773T-I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 256 bytes of RAM, and integrated peripherals including PWM, watchdog timer, and brown-out detection. The device operates at 20MHz with a supply voltage range of 2.5V to 5.5V and is housed in a 28-SOIC surface mount package.

The PIC16LC773T-I/SO carries an Obsolete product status. Identifying equivalent substitute parts is necessary for design continuity, procurement planning, and system maintenance where original components are no longer readily available through standard distribution channels.

Key Parameters

Parameter	Value
Core Processor	PIC
Core Size	8-Bit
Speed	20MHz
Program Memory Size	7KB (4K x 14)
Program Memory Type	OTP
RAM Size	256 x 8
Voltage - Supply (Vcc/Vdd)	2.5V ~ 5.5V
Data Converters	A/D 6x12b
Number of I/O	22
Connectivity	I2C, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PIC16LC773T-I/SO are identified based on strict equivalence across the following critical parameters:

Core Processor Architecture: PIC processor family
Core Size: 8-Bit processing capability
Operating Speed: 20MHz clock frequency
Program Memory: 7KB (4K x 14) OTP configuration
RAM Configuration: 256 x 8 byte organization
Supply Voltage Range: 2.5V ~ 5.5V compatibility
Analog Capability: A/D 6x12b converter specification
I/O Count: 22 input/output pins
Interface Protocols: I2C, SPI, UART/USART support
Integrated Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
Temperature Range: -40°C ~ 85°C operation
Package Format: 28-SOIC surface mount housing
Compliance Standards: ROHS3 Compliant, REACH Unaffected

The PIC16LC773-I/SO meets all specified parameters and qualifies as a direct substitute. The primary distinction is product status: the substitute part is Active, whereas the original is Obsolete.

Parameter Comparison

Parameter	PIC16LC773T-I/SO (Main)	PIC16LC773-I/SO (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
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	OTP	OTP
RAM Size	256 x 8	256 x 8
Voltage - Supply (Vcc/Vdd)	2.5V ~ 5.5V	2.5V ~ 5.5V
Data Converters	A/D 6x12b	A/D 6x12b
Number of I/O	22	22
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)
Mounting Type	Surface Mount	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)	28-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
Packaging	Not specified	Tube

Engineering Selection Recommendations

The PIC16LC773-I/SO is a direct functional equivalent to the PIC16LC773T-I/SO. Both devices share identical electrical specifications, memory configurations, peripheral sets, and package formats. The substitute part maintains full ROHS3 compliance and REACH compliance status.

The primary advantage of selecting the PIC16LC773-I/SO is its Active product status, ensuring continued availability through authorized distribution channels and long-term supply chain stability. The substitute part is supplied in Tube packaging, which may differ from the original packaging specification but does not affect electrical or mechanical compatibility.

For applications currently using the PIC16LC773T-I/SO, direct substitution with the PIC16LC773-I/SO requires no design modifications, firmware changes, or board-level alterations.

Frequently Asked Questions (FAQ)

Q: Are the PIC16LC773T-I/SO and PIC16LC773-I/SO pin-compatible?

A: Yes. Both devices use the 28-SOIC package with identical pin assignments, electrical characteristics, and functional capabilities. No PCB redesign is required for substitution.

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

A: The primary difference is product lifecycle status. The PIC16LC773T-I/SO is Obsolete, while the PIC16LC773-I/SO is Active. The suffix variation reflects Microchip's internal part numbering convention. Electrical and mechanical specifications are identical.

Q: Can I use the PIC16LC773-I/SO as a drop-in replacement in existing designs?

A: Yes. The substitute part is a direct replacement with no design modifications required. Firmware, PCB layout, and system integration remain unchanged.

Q: What packaging is available for the substitute part?

A: The PIC16LC773-I/SO is supplied in Tube packaging. If alternative packaging formats are required, contact your authorized Microchip distributor for availability options.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16LC773T-I/SO and PIC16LC773-I/SO are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these devices?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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