| Part Number | 54LS257B Datasheet |
|---|---|
| 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 TRI-STATE versions LS157 and LS158 with same pinouts Y Schottky-clamped for significant improvement in A-C performance Y Provides bus interface from multiple sources in highperformance systems Y Average propagation delay from data input 12 ns Y Typical power dissipation LS257B 50 mW LS258B 35 mW Y. |
54LS257B Datasheet and Specifications PDF
The 54LS257B is a Quad 2-Data Selectors/Multiplexers.
Key Specifications
| Package | CDIP |
|---|---|
| Mount Type | Through Hole |
| Pins | 16 |
| Operating Voltage | 5 V |
| Max Voltage (typical range) | 5.5 V |
| Min Voltage (typical range) | 4.5 V |
| Logic Function | Multiplexer, Mux |
| Height | 5.08 mm |
| Part Number | 54LS257B Datasheet |
|---|---|
| Description | QUAD 2-INPUT MULTIPLEXER |
| Manufacturer | Motorola Semiconductor |
| 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,. 4 56 78 S I0a I1a Za I0b I1b Zb GND VCC E0 I0c I1c Zc I0d I1d Zd 16 15 14 13 12 11 10 9 SN54/74LS258B 1 2 3 4 56 78 S I0a I1a Za I0b I1b Zb GND NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. SN54/74LS257B SN54/74LS258B QUAD 2-INPUT MULTIPLEXER WIT. |
| Part Number | 54LS257B Datasheet |
|---|---|
| Description | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS |
| Manufacturer | Texas Instruments |
| Overview |
SN54LS257B, SN54LS258B, SN54S257, SN54S258
SN74LS257B, SN74LS258B, SN74S257, SN74S258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SDLS148 – OCTOBER 1976 – REVISED MARCH 1988
PRODUCTION DAT.
LS258B, SN54S257, SN54S258
SN74LS257B, SN74LS258B, SN74S257, SN74S258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SDLS148 * OCTOBER 1976 * REVISED MARCH 1988 4 * POST OFFICE BOX 655303 DALLAS, TEXAS 75265 SN54LS257B, SN54LS258B, SN54S257, SN54S258 SN74LS257B, SN74LS258B, SN74S257, SN74. |