AT89S51-33PUAlternatives & Equivalent Parts
About AT89S51-33PU
AT89S51-33PU is a Integrated Circuit component manufactured by Microchip. It comes in a Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | AT89S51-33PUSource | SL-104-G-19 | AT89S51-24JU | AT89S51-24AU | AT89S51-24JC |
|---|---|---|---|---|---|
| Manufacturer | Microchip | SAMTEC | Microchip | Microchip | Microchip |
| Package Type | Dual-In-Line Packages | Other | Plastic Leaded Chip Carrier | Quad Flat Packages | Plastic Leaded Chip Carrier |
| Pin Count | 40 | 4 | 44 | 44 | 44 |
| Temperature Range | -40.0°C ~ 85.0°C | — | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | — |
| Price | — | $0.8390 | $1.0700 | $1.6200 | $2.1500 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | — |
| Electrical Parameters | |||||
| YTEOL | 6 | 9.1 | 14 | 14 | — |
| Has ADC | NO | — | NO | NO | — |
| Address Bus Width | 16 | — | 16 | 16 | — |
| Bit Size | 8 | — | 8 | 8 | — |
| Boundary Scan | NO | — | NO | NO | — |
| CPU Family | 8051 | — | 80C51 | 80C51 | — |
| Clock Frequency-Max | 33 MHz | — | 33 MHz | 33 MHz | — |
| DAC Channels | NO | — | NO | NO | — |
| DMA Channels | NO | — | NO | NO | — |
| External Data Bus Width | 8 | — | 8 | 8 | — |
| JESD-30 Code | R-PDIP-T40 | — | S-PQCC-J44 | S-PQFP-G44 | — |
| Number of I/O Lines | 32 | — | 32 | 32 | — |
| On Chip Program ROM Width | 8 | — | 8 | 8 | — |
| PWM Channels | NO | — | NO | NO | — |
| Package Body Material | PLASTIC/EPOXY | — | PLASTIC/EPOXY | PLASTIC/EPOXY | — |
| Package Equivalence Code | DIP40,.6 | — | LDCC44,.7SQ | TQFP44,.39SQ,31 | — |
| Package Shape | RECTANGULAR | — | SQUARE | SQUARE | — |
| Package Style | IN-LINE | — | CHIP CARRIER | FLATPACK, THIN PROFILE | — |
| Qualification Status | Not Qualified | — | Not Qualified | Not Qualified | — |
| RAM (bytes) | 128 | — | 128 | 128 | — |
| ROM (words) | 4096 | — | 4096 | 4096 | — |
| ROM Programmability | FLASH | — | FLASH | FLASH | — |
| Speed | 33 MHz | — | 24 MHz | 24 MHz | — |
| Supply Current-Max | 25 mA | — | 25 mA | 25 mA | — |
| Supply Voltage-Max | 5.5 V | — | 5.5 V | 5.5 V | — |
| Supply Voltage-Min | 5 V | — | 5 V | 5 V | — |
| Supply Voltage-Nom | 5 V | — | 5 V | 5 V | — |
| Surface Mount | NO | — | YES | YES | — |
| Technology | CMOS | — | CMOS | CMOS | — |
| Temperature Grade | INDUSTRIAL | — | INDUSTRIAL | INDUSTRIAL | — |
| Terminal Form | THROUGH-HOLE | — | J BEND | GULL WING | — |
| Terminal Pitch | 2.54 mm | 2.54 mm | 1.27 mm | 0.8 mm | — |
| Terminal Position | DUAL | — | QUAD | QUAD | — |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER | — | MICROCONTROLLER | MICROCONTROLLER | — |
| ## AT89S51-33PU Alternates Showing results | Image | — | — | — | — |
| Pbfree Code | — | Yes | Yes | Yes | — |
| Factory Lead Time | — | 1 Week | 10 Weeks | 9 Weeks | — |
| Additional Feature | — | LOW PROFILE | — | — | — |
| Body/Shell Style | — | SOCKET | — | — | — |
| Connector Type | — | BOARD CONNECTOR | — | — | — |
| Contact Finish Mating | — | GOLD (30) OVER NICKEL (50) | — | — | — |
| Contact Finish Termination | — | Gold (Au) - with Nickel (Ni) barrier | — | — | — |
| Contact Gender | — | FEMALE | — | — | — |
| Contact Material | — | BERYLLIUM COPPER | — | — | — |
| DIN Conformance | — | NO | — | — | — |
| Filter Feature | — | NO | — | — | — |
| IEC Conformance | — | NO | — | — | — |
| JESD-609 Code | — | e4 | e3 | e3 | — |
| MIL Conformance | — | NO | — | — | — |
| Mating Information | — | MULTIPLE MATING PARTS AVAILABLE | — | — | — |
| Mixed Contacts | — | NO | — | — | — |
| Mounting Style | — | STRAIGHT | — | — | — |
| Mounting Type | — | BOARD | — | — | — |
| Number Of Connectors | — | ONE | — | — | — |
| Number of Rows Loaded | — | 1 | — | — | — |
| Option | — | GENERAL PURPOSE | — | — | — |
| Termination Type | — | SOLDER | — | — | — |
| Total Number of Contacts | — | 4 | — | — | — |
| Manufacturer Package Code | — | — | PLCC-44 | TQFP-44 | — |
| Format | — | — | FIXED POINT | FIXED POINT | — |
| Integrated Cache | — | — | NO | NO | — |
| Low Power Mode | — | — | YES | YES | — |
| Number of External Interrupts | — | — | 2 | 2 | — |
| Number of Serial I/Os | — | — | 1 | 1 | — |
| Number of Timers | — | — | 2 | 2 | — |
| On Chip Data RAM Width | — | — | 8 | 8 | — |
| Peak Reflow Temperature (Cel) | — | — | 245 | 260 | — |
| Terminal Finish | — | — | Matte Tin (Sn) | Matte Tin (Sn) | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | 40 | 40 | — |
| ## AT89S51-24JU Alternates Showing results | — | — | Image | — | — |
| ## AT89S51-24AU Alternates Showing results | — | — | — | Image | — |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 4 alternatives for AT89S51-33PU — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for AT89S51-33PU is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating AT89S51-33PU replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to AT89S51-33PU?
Known equivalents for AT89S51-33PU include SL-104-G-19, AT89S51-24JU, AT89S51-24AU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of AT89S51-33PU?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify AT89S51-33PU alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.