PIC16C74B-20I/L Microchip Integrated Circuit (Other) In Stock
Microchip PIC16C74B-20I/L is an 8-bit PIC16C OTP microcontroller running at 20 MHz with 7 KB program memory and an 8-channel 8-bit ADC in a 44-pin PLCC package. It provides 33 GPIO lines, 3 timers, and USART/SPI/I2C peripherals for industrial control. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 44
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16C74B-20I/L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $8.6467(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC16C74B-20I/L?
- 8-bit PIC16C core at 20 MHz with 7 KB OTP Flash for cost-effective fixed-function control
- 8-channel 8-bit ADC enabling multi-sensor analog acquisition without external ADC ICs
- 44-pin PLCC package with 33 GPIO lines for high I/O density in industrial controller boards
- USART, SPI, and I2C peripherals supporting serial communication with sensors and host systems
What is PIC16C74B-20I/L used for?
The PIC16C74B-20I/L is suited for legacy industrial control panels, HVAC controllers, and motor drive sequencing circuits that require a proven 8-bit core with multi-channel analog sensing. Its 8-channel ADC and 33 GPIO lines support simultaneous temperature, pressure, and position sensing in compact embedded systems. It is also used for equipment firmware maintenance where OTP code lock-out protects proprietary control algorithms.
What are the specifications of PIC16C74B-20I/L?
| Pbfree Code | Yes |
| Manufacturer Package Code | PLCC-44 |
| Factory Lead Time | 7Weeks |
| Date Of Intro | 1990-01-01 |
| YTEOL | 3 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-J44 |
| JESD-609 Code | e3 |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 33 |
| Number of Serial I/Os | 1 |
| Number of Timers | 7 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC44,.7SQ |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 192 |
| ROM (words) | 4096 |
| ROM Programmability | OTPROM |
| Speed | 20MHz |
| Supply Current-Max | 20mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16C74B-20I/L datasheet?
PIC16C74B-20I/L Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C74B-20I/L?
Compatible alternatives and drop-in replacements for PIC16C74B-20I/L:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
Frequently Asked Questions
What is the maximum clock speed and program memory size of the PIC16C74B-20I/L?
The PIC16C74B-20I/L operates at a maximum clock frequency of 20 MHz and contains 7 KB of OTP (one-time programmable) program memory. This combination provides adequate throughput for fixed-function 8-bit control tasks such as sensor polling, PWM generation, and serial communication in industrial and consumer applications.
How many analog input channels does the PIC16C74B-20I/L provide for sensor interfacing?
The PIC16C74B-20I/L integrates an 8-channel, 8-bit analog-to-digital converter, allowing up to 8 analog sensors to be multiplexed into a single ADC core without external analog MUX ICs. Each channel can resolve voltages from 0 V to VDD (typically 5 V) with 256 discrete levels at a conversion rate compatible with 20 MHz operation.
Why would a designer choose the 44-pin PLCC package over a DIP package for the PIC16C74B?
The 44-pin PLCC package provides access to 33 GPIO lines in a surface-mount footprint measuring approximately 16.6 mm x 16.6 mm, compared to a 40-pin DIP that exposes fewer I/O lines and occupies more than twice the board area. PLCC also uses a ZIF socket for socketed designs, easing field replacement while maintaining a smaller PCB footprint than DIP alternatives.
Is the PIC16C74B-20I/L still available for legacy system maintenance, and what should buyers know?
Yes, the PIC16C74B-20I/L remains available from authorized distributors for legacy system maintenance, with typical factory lead times of 7 weeks. Buyers should note it uses OTP memory, so each unit can only be programmed once. For new designs, Microchip recommends migrating to the PIC16F series, which offers Flash re-programmability with pin-compatible 44-pin PLCC or TQFP options.
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More from Microchip
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| 1+ | $11.6800 | $11.68 |
| 10+ | $11.3924 | $113.92 |
| 54+ | $10.9300 | $590.22 |
| 81+ | $8.9300 | $723.33 |
| 324+ | $8.7229 | $2826.22 |
| 648+ | $8.6467 | $5603.04 |
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