 4 Star Electronics | CD74HCT21MT | 1 | | 1 | |
| 1Source | CD74HCT21MT | 1 | | 1 | |
| Digi-Key | 10665263 | 1 | 288 | 1 | 1 @ $0.92, 10 @ $0.82, 25 @ $0.78, 100 @ $0.64, 250 @ $0.60, 500 @ $0.53, 1000 @ $0.46 |
| iodParts | CD74HCT21MT | 2500 | 9000 | 2500 | 2500 @ $0.12, 5250 @ $0.12 |
| Win Source | CD74HCT21MT | 1 | 9750 | 1 | |
| Hotenda | H2554572 | 250 | 1250 | 250 | 250 @ $0.52, 500 @ $0.44 |
 Radwell | CD74HCT21MT | 1250 | -2 | 1250 | 1 @ $0.48 |
 Digi-Key | CD74HCT21MT-ND | 250 | 1250 | | 250 @ $0.52, 500 @ $0.44, 1250 @ $0.35 |
| Chip One Stop Global | C1S746201024103 | 250 | 6000 | | 250 @ $0.44, 500 @ $0.42, 1000 @ $0.39, 2000 @ $0.27 |
| Mouser | 595-CD74HCT21MT | | 452 | | 1 @ $0.82, 10 @ $0.68, 50 @ $0.68, 100 @ $0.44, 1000 @ $0.35, 10000 @ $0.28 |
| Rochester Electronics | CD74HCT21MT | | 500 | | 1 @ $0.40, 25 @ $0.37, 100 @ $0.36, 500 @ $0.34, 1000 @ $0.32 |
| Avnet | CD74HCT21MT | 1250 | | | 1250 @ $0.36, 1750 @ $0.33, 3000 @ $0.31, 6250 @ $0.29, 12500 @ $0.28 |
| Avnet Europe | CD74HCT21MT | 250 | | | 250 @ $0.38, 500 @ $0.35, 1000 @ $0.34, 1500 @ $0.32, 2500 @ $0.30 |
| Avnet Asia | CD74HCT21MT | 250 | | | 250 @ $0.34, 500 @ $0.32, 1000 @ $0.30, 1500 @ $0.29, 2500 @ $0.28 |
| Abacus Technologies | CD74HCT21MT | | 2446 | | |