The 74LS257 is a 3-STATE Quad 2-Data Selectors/Multiplexers.
| Package | PDIP |
|---|---|
| Mount Type | Through Hole |
| Pins | 16 |
| Operating Voltage | 5 V |
| Max Voltage (typical range) | 5.25 V |
| Min Voltage (typical range) | 4.75 V |
| Logic Function | Multiplexer |
| Height | 5.08 mm |
| Part Number | 74LS257 Datasheet |
|---|---|
| Manufacturer | Fairchild Semiconductor |
| Overview | These Schottky-clamped high-performance multiplexers feature 3-STATE outputs that can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a. s 3-STATE versions LS157 and LS158 with same pinouts s Schottky-clamped for significant improvement in A-C performance s Provides bus interface from multiple sources in high-performance systems s Average propagation delay from data input 12 ns s Typical power dissipation: 50 mW Ordering Code: Order. |
| Part Number | 74LS257 Datasheet |
|---|---|
| Description | Quadruple 2-line-to-1-line Data Selectors/Multiplexers |
| Manufacturer | Hitachi Semiconductor |
| Overview | 19.20 20.00 Max 16 9 7.40 Max 6.30 Unit: mm 1 1.3 1.11 Max 8 0.51 Min 2.54 Min 5.06 Max 7.62 2.54 ± 0.25 0.48 ± 0.10 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Weight (reference value) + 0. s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the informat. |
| Part Number | 74LS257 Datasheet |
|---|---|
| Description | TRI-STATE Quad 2-Data Selectors/Multiplexers |
| Manufacturer | National Semiconductor |
| Overview | These Schottky-clamped high-performance multiplexers feature TRI-STATE outputs that can interface directly with data lines of bus-organized systems With all but one of the common outputs disabled (at . Y Y Y Y Y Y TRI-STATE versions LS157 and LS158 with same pinouts Schottky-clamped for significant improvement in A-C performance Provides bus interface from multiple sources in highperformance systems Average propagation delay from data input 12 ns Typical power dissipation LS257B 50 mW LS258B 3. |
| Part Number | 74LS257 Datasheet |
|---|---|
| Description | LOW POWER SCHOTTKY |
| Manufacturer | onsemi |
| Overview |
The LS257B and LS258B are Quad 2-Input Multiplexers with 3-state outputs. They select four bits of data from two sources each under control of a Common Data Select Input. When the Select Input is LOW.
Voltage Operating Ambient Temperature Range Output Current * High Output Current * Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 * 2.6 24 Unit V °C mA mA 16 PLASTIC N SUFFIX CASE 648 1 SOIC D SUFFIX CASE 751B ORDERING INFORMATION Device SN74LS257BN SN74LS257BD SN74LS258BN SN74LS258BD Package 16 Pin DIP . |
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| Part Number | Manufacturer | Description |
|---|---|---|
| 74LS257B | National Semiconductor | Quad 2-Data Selectors/Multiplexers |
| 74LS257B | Motorola Semiconductor | QUAD 2-INPUT MULTIPLEXER |
| 74LS257B | Fairchild Semiconductor | 3-STATE Quad 2-Data Selectors/Multiplexers |
| 74LS257B | Texas Instruments | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS |