PIC16C73BT-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C73BT-20E/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, watchdog timer, and brown-out detection. The device operates at 20MHz 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. Locating equivalent or substitute components is necessary for ongoing production support, design updates, or inventory replenishment when original stock becomes unavailable.

Substiute Parts

PIC16C73BT-20E/SS

Microchip TechnologyIn Stock: 1083PIC16C73BT-20E/SS Datasheet

Current PartRFQ

PIC16C73B-20E/SS

Microchip TechnologyIn Stock: 737PIC16C73B-20E/SS Datasheet

DirectRFQ

PIC16C73B-20I/SS

Microchip TechnologyIn Stock: 2857PIC16C73B-20I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C73BT-20E/SS is determined by strict equivalence across the following critical parameters:

• Core processor architecture (PIC)
• Core size (8-Bit)
• Operating frequency (20MHz)
• Program memory capacity and type (7KB OTP)
• RAM configuration (192 x 8)
• I/O pin count (22)
• Supply voltage range (4V ~ 5.5V)
• Peripheral feature set (I2C, SPI, UART/USART, PWM, WDT, brown-out detection)
• Package type and physical dimensions (28-SSOP)

The identified substitute parts maintain full compatibility across all electrical and mechanical parameters. Differences in product status, operating temperature range, and packaging format are noted but do not affect functional interchangeability within the specified electrical operating window.

Parameter Comparison

Engineering Selection Recommendations

Both PIC16C73B-20E/SS and PIC16C73B-20I/SS are functionally equivalent substitutes for the obsolete PIC16C73BT-20E/SS across all specified electrical and mechanical parameters.

PIC16C73B-20E/SS is the direct successor with Active product status and identical operating temperature range (-40°C ~ 125°C). This part maintains full compatibility and is the primary recommendation for direct replacement.

PIC16C73B-20I/SS is also Active and fully compatible electrically. The operating temperature range is limited to -40°C ~ 85°C, which restricts its use to applications not requiring the extended upper temperature specification of 125°C. Both parts carry ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can PIC16C73B-20E/SS directly replace PIC16C73BT-20E/SS in existing designs?

A: Yes. The PIC16C73B-20E/SS maintains identical electrical specifications, memory configuration, I/O count, peripheral feature set, and 28-SSOP package dimensions. No circuit modifications are required for functional interchangeability.

Q: What is the difference between PIC16C73B-20E/SS and PIC16C73B-20I/SS?

A: Both parts are electrically identical. The primary difference is operating temperature range: PIC16C73B-20E/SS operates from -40°C to 125°C, while PIC16C73B-20I/SS operates from -40°C to 85°C. Select based on your application's temperature requirements.

Q: Why is the original PIC16C73BT-20E/SS marked as Obsolete?

A: The part has reached end-of-life status from the manufacturer. The PIC16C73B variants represent the current active product line with identical functionality and are the recommended alternatives for new designs and production support.

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

A: All three parts carry ROHS3 compliance and REACH Unaffected status. No compliance differences exist that would affect component selection.

Q: Is the 28-SSOP package identical across all three parts?

A: Yes. All parts use the same 28-SSOP package with 0.209" width and 5.30mm dimensions, ensuring PCB footprint compatibility.