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| # | Part: | Description: | Manuf. | Package | Pins | T°min | T°max | PDF size |
| 1. |  IN74HC251A | 8-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS | Integral Corp. | INTEGRAL | - | - | - | 151 Kb |
| 2. | IN74HC251A | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 160 Kb |
| 3. | IN74HC251AD | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 160 Kb |
| 4. | IN74HC251AN | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 160 Kb |
| 5. | IN74HC251D | 8-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS | Integral Corp. | INTEGRAL | - | - | - | 151 Kb |
| 6. | IN74HC251N | 8-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS | Integral Corp. | INTEGRAL | - | - | - | 151 Kb |
| 7. | IN74HC253A | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 163 Kb |
| 8. | IN74HC253AD | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 163 Kb |
| 9. | IN74HC253AN | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 163 Kb |
| 10. | IN74HC257 | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | Integral Corp. | INTEGRAL | - | - | - | 112 Kb |
| 11. | IN74HC257A | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 12. | IN74HC257AD | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 13. | IN74HC257AN | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 14. | IN74HC257D | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | Integral Corp. | INTEGRAL | - | - | - | 112 Kb |
| 15. | IN74HC257N | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | Integral Corp. | INTEGRAL | - | - | - | 112 Kb |
| 16. | IN74HC258A | Quad 2-Input Data Selectors/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 17. | IN74HC258AD | Quad 2-Input Data Selectors/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 18. | IN74HC258AN | Quad 2-Input Data Selectors/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS | IK Semicon Co., Ltd | IKSEMICON | - | - | - | 156 Kb |
| 19. | IN74HC258D | Quad 2-input data selector/multiplexer with 3-state outputs, high-performance silicon-gate CMOS | Integral Corp. | INTEGRAL | - | - | - | 115 Kb |
| 20. | IN74HC258N | Quad 2-input data selector/multiplexer with 3-state outputs, high-performance silicon-gate CMOS | Integral Corp. | INTEGRAL | - | - | - | 115 Kb |
