 Digi-Key | 255-2323-5-ND | 1 | 17 | 40 | 1 @ $4.61, 10 @ $4.32, 25 @ $3.84, 50 @ $3.65, 100 @ $3.46, 250 @ $3.07, 500 @ $2.88, 1000 @ $2.69 |
 Allied Electronics | E5366044 | 1 | | 1 | 1 @ $3.80 |
 Onlinecomponents.com | TXD2-4.5V | 1 | 154 | 1 | 1 @ $3.49, 25 @ $3.20, 40 @ $2.95, 100 @ $2.74, 250 @ $2.56, 500 @ $2.46 |
 Newark | 11C0117 | 40 | | 40 | 25 @ $4.41, 50 @ $4.04, 100 @ $3.60, 500 @ $3.28, 1000 @ $2.89, 2500 @ $2.69 |
| 1Source | TXD2-4.5V | 1 | | 1 | |
| Digi-Key | 649887 | 1 | 14 | 1 | 1 @ $4.98, 10 @ $4.67, 25 @ $4.15, 40 @ $3.94, 80 @ $3.73, 240 @ $3.32, 440 @ $3.11, 960 @ $2.90 |
 Avnet | TXD2-4.5V | 40 | | 1 | 40 @ $2.73, 1000 @ $2.51, 10000 @ $2.46 |
| us.rs-online.com | 74614230 | 40 | | 40 | 40 @ $4.04 |