Standard test vector
CRC implementations are commonly verified with the ASCII input 123456789.
- Input format
- ASCII
- Input
- 123456789
- Expected CRC
- 0x97
- Residue
- 0x00
CRC-8 / TECH-3250
Width8-bitRefInYesRefOutYesInput data9 bytesUTF-8 bytesText is converted to UTF-8 bytes.
Standard test string
Result
Similar CRC Algorithms
5 modelsBrowse all algorithms
Result is calculated from the current input. Check is the published verification value for the standard input 123456789. Click another algorithm to view its detail page.
CRC-8 / GSM-A
8-bitPoly 0x1DIn No Out No
Result
0x37
Check
0x37
CRC-8 / HITAG
8-bitPoly 0x1DIn No Out No
Result
0xB4
Check
0xB4
CRC-8 / I-CODE
8-bitPoly 0x1DIn No Out No
Result
0x7E
Check
0x7E
CRC-8 / MIFARE-MAD
8-bitPoly 0x1DIn No Out No
Result
0x99
Check
0x99
CRC-8 / TECH-3250 Current
8-bitPoly 0x1DIn Yes Out Yes
Result
0x97
Check
0x97
CRC Lookup Table
CRC-8 / TECH-3250 · Poly 0x1D · Init 0xFF · XorOut 0x00 · 256 entries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 Source Code
CRC-8 / TECH-3250 · Poly 0x1D · Init 0xFF · XorOut 0x00 · C · 56 lines
/*
* Model: CRC-8 / TECH-3250 (8-bit)
* Poly: 0x1D, Init: 0xFF, XorOut: 0x00
* CRC Table C Source Code & Lookup Table Generator
*/
#include <stdint.h>
#include <stddef.h>
const uint8_t crc_table[256] = {
0x00, 0x64, 0xC8, 0xAC, 0xE1, 0x85, 0x29, 0x4D,
0xB3, 0xD7, 0x7B, 0x1F, 0x52, 0x36, 0x9A, 0xFE,
0x17, 0x73, 0xDF, 0xBB, 0xF6, 0x92, 0x3E, 0x5A,
0xA4, 0xC0, 0x6C, 0x08, 0x45, 0x21, 0x8D, 0xE9,
0x2E, 0x4A, 0xE6, 0x82, 0xCF, 0xAB, 0x07, 0x63,
0x9D, 0xF9, 0x55, 0x31, 0x7C, 0x18, 0xB4, 0xD0,
0x39, 0x5D, 0xF1, 0x95, 0xD8, 0xBC, 0x10, 0x74,
0x8A, 0xEE, 0x42, 0x26, 0x6B, 0x0F, 0xA3, 0xC7,
0x5C, 0x38, 0x94, 0xF0, 0xBD, 0xD9, 0x75, 0x11,
0xEF, 0x8B, 0x27, 0x43, 0x0E, 0x6A, 0xC6, 0xA2,
0x4B, 0x2F, 0x83, 0xE7, 0xAA, 0xCE, 0x62, 0x06,
0xF8, 0x9C, 0x30, 0x54, 0x19, 0x7D, 0xD1, 0xB5,
0x72, 0x16, 0xBA, 0xDE, 0x93, 0xF7, 0x5B, 0x3F,
0xC1, 0xA5, 0x09, 0x6D, 0x20, 0x44, 0xE8, 0x8C,
0x65, 0x01, 0xAD, 0xC9, 0x84, 0xE0, 0x4C, 0x28,
0xD6, 0xB2, 0x1E, 0x7A, 0x37, 0x53, 0xFF, 0x9B,
0xB8, 0xDC, 0x70, 0x14, 0x59, 0x3D, 0x91, 0xF5,
0x0B, 0x6F, 0xC3, 0xA7, 0xEA, 0x8E, 0x22, 0x46,
0xAF, 0xCB, 0x67, 0x03, 0x4E, 0x2A, 0x86, 0xE2,
0x1C, 0x78, 0xD4, 0xB0, 0xFD, 0x99, 0x35, 0x51,
0x96, 0xF2, 0x5E, 0x3A, 0x77, 0x13, 0xBF, 0xDB,
0x25, 0x41, 0xED, 0x89, 0xC4, 0xA0, 0x0C, 0x68,
0x81, 0xE5, 0x49, 0x2D, 0x60, 0x04, 0xA8, 0xCC,
0x32, 0x56, 0xFA, 0x9E, 0xD3, 0xB7, 0x1B, 0x7F,
0xE4, 0x80, 0x2C, 0x48, 0x05, 0x61, 0xCD, 0xA9,
0x57, 0x33, 0x9F, 0xFB, 0xB6, 0xD2, 0x7E, 0x1A,
0xF3, 0x97, 0x3B, 0x5F, 0x12, 0x76, 0xDA, 0xBE,
0x40, 0x24, 0x88, 0xEC, 0xA1, 0xC5, 0x69, 0x0D,
0xCA, 0xAE, 0x02, 0x66, 0x2B, 0x4F, 0xE3, 0x87,
0x79, 0x1D, 0xB1, 0xD5, 0x98, 0xFC, 0x50, 0x34,
0xDD, 0xB9, 0x15, 0x71, 0x3C, 0x58, 0xF4, 0x90,
0x6E, 0x0A, 0xA6, 0xC2, 0x8F, 0xEB, 0x47, 0x23
};
uint8_t calculate_crc(const uint8_t *data, size_t length) {
uint8_t crc = 0xFF;
for (size_t i = 0; i < length; i++) {
#if 1
uint8_t idx = (uint8_t)(crc ^ data[i]);
crc = (crc >> 8) ^ crc_table[idx];
#else
uint8_t idx = (uint8_t)((crc >> 0) ^ data[i]);
crc = (crc << 8) ^ crc_table[idx];
#endif
}
return crc ^ 0x00;
}About CRC-8/TECH-3250
CRC-8/TECH-3250 is associated with professional digital audio data formats.
CRC-8/TECH-3250 is a 8-bit CRC model defined by polynomial 0x1D, an initial register value of 0xFF, and final XOR 0x00. It processes reflected input bytes and reports a reflected output.
Documented application context for this model includes AES/EBU, Digital audio, Broadcast systems. The calculator above applies this exact parameter set to the current input; the published Check value below is instead the fixed verification result for ASCII 123456789.
Model characteristics
A model is identified by its complete parameter set, not its polynomial alone.
- Bit order
- Reflected
- Register start
- 0xFF
- Final XOR
- 0x00
- Published check
- 0x97
Implementation checks for CRC-8/TECH-3250
- Use a 8-bit register and polynomial 0x1D.
- Initialize the register to 0xFF and use XorOut 0x00 exactly as listed; changing either value defines a different model.
- Verify the implementation with ASCII “123456789”; the expected result is 0x97.
Continue with the main calculator, browse the algorithm catalog, compare models in the Algorithm Reference section, or generate a lookup table.
Complete CRC-8/TECH-3250 parameters
| Parameter | Value | Meaning | Reference |
|---|---|---|---|
| Width | 8 bits | CRC register and result width | Read guide |
| Poly | 0x1D | Generator polynomial without the leading term | Read guide |
| Init | 0xFF | Initial CRC register value | Read guide |
| RefIn | Yes | Reflect each input byte before processing | Read guide |
| RefOut | Yes | Reflect the register before XOR Out | Read guide |
| XorOut | 0x00 | Final value XORed with the CRC register | Read guide |
| Check | 0x97 | CRC of ASCII “123456789” | Read guide |
| Residue | 0x00 | Expected residue after appending a valid CRC | Read guide |
AliasesAES/EBU CRC-8
Where CRC-8/TECH-3250 is used
- 01AES/EBU
- 02Digital audio
- 03Broadcast systems
CRC-8/TECH-3250 FAQ
What is the check value for CRC-8/TECH-3250?
For the standard ASCII test input 123456789, the check value of CRC-8/TECH-3250 is 0x97.
What polynomial does CRC-8/TECH-3250 use?
CRC-8/TECH-3250 uses the 8-bit polynomial 0x1D.
Does CRC-8/TECH-3250 use reflected input and output?
For CRC-8/TECH-3250, RefIn is Yes and RefOut is Yes.
What is CRC-8/TECH-3250 commonly confused with?
CRC-8/HITAG uses the same polynomial (0x1D), which is the usual source of mix-ups — matching the polynomial alone does not reproduce CRC-8/TECH-3250. The two models differ in input reflection and output reflection, so a port from one to the other needs those fields checked explicitly, not just the poly.