This datasheet provides information about SN54LS257B, SN54LS258B, SN54S257, SN54S258 SN74LS257B, SN74LS258B, SN74S257, SN74S258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS, including product name, model, package, pin, function, application, etc.
This document is a datasheet for the Texas Instruments SN54LS257B, SN54LS258B, SN54S257, SN54S258, SN74LS257B, SN74LS258B, SN74S257, and SN74S258 series. These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems, featuring three-state outputs that interface directly with system buses.
| Operating Temperature (SN54LS/SN74LS) | -55°C to 125°C |
|---|---|
| Operating Temperature (SN54S/SN74S) | -55°C to 125°C |
| High-Level Output Current (SN54LS/SN74LS) | -2.6 mA |
| Low-Level Output Current (SN54LS/SN74LS) | 24 mA |
| High-Level Output Current (SN54S/SN74S) | -6.5 mA |
| Low-Level Output Current (SN54S/SN74S) | 20 mA |
These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems.
Yes, the three-state outputs will not load the data lines when the output control pin (G) is at a high-logic level.
The typical propagation delay from power to data input is 5.5 ns.