SN74HC258 Series
Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs
Manufacturer: Texas Instruments
Catalog
Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs
Key Features
• Wide Operating Voltage Range of 2 V to 6 VHigh-Current Inverting Outputs Drive up to 15 LSTTL LoadsLow Power Consumption, 80-µA Max ICC’HC257 ...Typical tpd= 9 ns’HC258 ...Typical tpd= 12 ns±6-mA Output Drive at 5 VLow Input Current of 1 µA MaxProvides Bus Interface from Multiple Sources in High-Performance SystemsWide Operating Voltage Range of 2 V to 6 VHigh-Current Inverting Outputs Drive up to 15 LSTTL LoadsLow Power Consumption, 80-µA Max ICC’HC257 ...Typical tpd= 9 ns’HC258 ...Typical tpd= 12 ns±6-mA Output Drive at 5 VLow Input Current of 1 µA MaxProvides Bus Interface from Multiple Sources in High-Performance Systems
Description
AI
These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.
To ensure the high-impedance state during power up or power down, (G\) should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.
To ensure the high-impedance state during power up or power down, (G\) should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
