PIC16C73BT-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C73BT-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 22 I/O pins, and integrated peripherals including PWM, WDT, and brown-out detection. The device operates at 4MHz with a supply voltage range of 4V to 5.5V and is housed in a 28-SSOP surface mount package.

This part carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this microcontroller.

Substiute Parts

PIC16C73BT-04E/SS

Microchip TechnologyIn Stock: 883PIC16C73BT-04E/SS Datasheet

Current PartRFQ

PIC16C73B-04I/SS

Microchip TechnologyIn Stock: 5419PIC16C73B-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C73BT-04E/SS is determined by strict alignment of the following core parameters:

• Core Processor Architecture: Must be PIC
• Core Size: Must be 8-Bit
• Program Memory Configuration: Must be 7KB (4K x 14) OTP
• RAM Size: Must be 192 x 8
• Number of I/O Pins: Must be 22
• Operating Speed: Must be 4MHz
• Supply Voltage Range: Must be 4V ~ 5.5V
• Connectivity Interfaces: Must include I2C, SPI, UART/USART
• Peripheral Set: Must include Brown-out Detect/Reset, POR, PWM, WDT
• Data Converter Specification: Must be A/D 5x8b
• Package Type: Must be 28-SSOP with matching physical dimensions

The PIC16C73B-04I/SS meets all substitution criteria and shares the identical base product number (PIC16C73), confirming functional and electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C73B-04I/SS is the direct functional equivalent of the PIC16C73BT-04E/SS. Both devices share identical electrical specifications, memory configuration, I/O count, and peripheral architecture. The substitute part carries Active product status from Microchip Technology, ensuring ongoing availability and support compared to the Obsolete status of the main part.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production environments. The substitute part is verified as programmable through DiGi-Electronics, confirming full functional compatibility.

The operating temperature range of the substitute part (-40°C ~ 85°C) is narrower than the main part (-40°C ~ 125°C). Applications requiring operation above 85°C must retain the original part specification. For standard industrial and commercial temperature ranges, the substitute part is fully compatible.

The moisture sensitivity level differs between the two parts (MSL 1 versus MSL 3), reflecting different manufacturing batches or process revisions. This does not affect functional equivalence but may influence storage and handling procedures according to IPC standards.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C73B-04I/SS be used as a direct replacement for the PIC16C73BT-04E/SS?

A: Yes. Both parts share identical core processor architecture, memory configuration, I/O pin count, operating speed, supply voltage range, and peripheral set. The electrical and functional specifications are equivalent, and both are housed in the same 28-SSOP package with matching physical dimensions.

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

A: The differences are limited to product status, temperature operating range, and moisture sensitivity level. The PIC16C73BT-04E/SS is Obsolete with a -40°C to 125°C operating range and MSL 1. The PIC16C73B-04I/SS is Active with a -40°C to 85°C operating range and MSL 3. All electrical and functional parameters are identical.

Q: Are there any temperature-related limitations when substituting?

A: The substitute part operates to 85°C maximum, compared to 125°C for the original part. If your application requires operation above 85°C, the original part specification must be retained. For standard industrial and commercial applications within the -40°C to 85°C range, the substitute part is fully compatible.

Q: Do both parts meet regulatory compliance requirements?

A: Yes. Both the PIC16C73BT-04E/SS and PIC16C73B-04I/SS are ROHS3 compliant and REACH unaffected. They carry identical ECCN (EAR99) and HTSUS (8542.31.0001) classifications.

Q: What does the different MSL rating mean?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be exposed to moisture at specified temperature and humidity conditions before soldering. MSL 1 allows unlimited storage, while MSL 3 allows 168 hours. This affects handling and storage procedures but does not impact electrical performance or functional equivalence.

Q: Is the substitute part programmable?

A: Yes. The PIC16C73B-04I/SS is verified as programmable through DiGi-Electronics, confirming full compatibility with standard PIC programming tools and procedures.

Q: Are the pin configurations identical?

A: Yes. Both parts feature 22 I/O pins in a 28-SSOP package with identical pinout and physical dimensions (0.209", 5.30mm Width).