PIC16LC73B-04/SP Equivalent & Substitute Parts

Part Overview

The PIC16LC73B-04/SP is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 192 x 8 bytes of RAM, and 22 I/O pins. The device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated peripherals such as PWM, WDT, brown-out detection, and communication interfaces (I2C, SPI, UART/USART). This part is currently active in production and RoHS3 compliant. Finding equivalent or substitute parts may be necessary due to inventory constraints, end-of-life considerations, or application-specific performance requirements.

Substiute Parts

PIC16LC73B-04/SP

Microchip TechnologyIn Stock: 863PIC16LC73B-04/SP Datasheet

Current PartRFQ

PIC16LF73-I/SP

Microchip TechnologyIn Stock: 1263PIC16LF73-I/SP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC16LF73-I/SP qualifies as a direct substitute based on the following alignment of critical parameters:

Matching Parameters:

• Core Size: 8-Bit (identical)
• Program Memory Size: 7KB (4K x 14) (identical)
• RAM Size: 192 x 8 (identical)
• Number of I/O: 22 (identical)
• Connectivity: I2C, SPI, UART/USART (identical)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT (identical)
• Data Converters: A/D 5x8b (identical)
• Mounting Type: Through Hole (identical)
• Package: 28-DIP (0.300", 7.62mm) (identical)
• RoHS Status: ROHS3 Compliant (identical)

Differing Parameters:

• Program Memory Type: OTP (main part) vs. FLASH (substitute)
• Speed: 4MHz (main part) vs. 20MHz (substitute)
• Voltage Supply: 2.5V ~ 5.5V (main part) vs. 2V ~ 5.5V (substitute)
• Operating Temperature: 0°C ~ 70°C (main part) vs. -40°C ~ 85°C (substitute)

The substitute part operates at higher speed and offers extended temperature range and lower minimum voltage specification, making it functionally compatible for applications within the main part's operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LC73B-04/SP and PIC16LF73-I/SP are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The PIC16LF73-I/SP offers superior performance characteristics with 20MHz operation versus 4MHz, extended temperature range (-40°C to 85°C versus 0°C to 70°C), and FLASH memory instead of OTP, providing greater flexibility for development and production environments. The lower minimum voltage specification (2V versus 2.5V) of the substitute part expands operational envelope in low-power applications. Both devices maintain identical pin count, I/O configuration, and peripheral feature set, ensuring direct functional compatibility within the 28-DIP package footprint.

Frequently Asked Questions (FAQ)

Q: Can PIC16LF73-I/SP directly replace PIC16LC73B-04/SP in existing designs?

A: Yes. Both devices share identical core architecture, I/O count (22 pins), program memory capacity (7KB), RAM allocation (192 x 8), and peripheral configuration. The 28-DIP package dimensions are identical, enabling direct socket substitution.

Q: What are the key differences between these parts?

A: The primary differences are program memory type (OTP versus FLASH), maximum operating speed (4MHz versus 20MHz), operating temperature range (0°C to 70°C versus -40°C to 85°C), and minimum supply voltage (2.5V versus 2V). The substitute part offers enhanced performance and broader environmental specifications.

Q: Does the higher speed of PIC16LF73-I/SP affect power consumption?

A: Speed capability does not inherently determine power consumption; actual power draw depends on clock frequency selection during operation. The PIC16LF73-I/SP supports operation at lower frequencies, allowing equivalent power profiles to the main part if configured accordingly.

Q: Are there any compatibility concerns with the FLASH memory type versus OTP?

A: No compatibility concerns exist. FLASH memory provides identical functional behavior with the added advantage of in-circuit reprogrammability, whereas OTP is one-time programmable. Both memory types execute code identically during operation.

Q: What is the significance of the extended temperature range in PIC16LF73-I/SP?

A: The -40°C to 85°C range accommodates industrial and automotive applications requiring broader thermal operation. Applications limited to 0°C to 70°C do not require this extended range but benefit from the additional margin if environmental conditions fluctuate.

Q: Are both parts RoHS compliant?

A: Yes. Both PIC16LC73B-04/SP and PIC16LF73-I/SP are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.