Datasheet Details
| Part number | SN54HCT257 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 484.09 KB |
| Description | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER |
| Download | SN54HCT257 Download (PDF) |
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| Part number | SN54HCT257 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 484.09 KB |
| Description | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER |
| Download | SN54HCT257 Download (PDF) |
|
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/ordering information NC − No internal connection The ’HCT257 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 (OE) input is at the high logic level.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor;
SN54HCT257, SN74HCT257 QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS WITH 3ĆSTATE OUTPUTS SCLS072D − NOVEMBER 1988 − REVISED SEPTEMBER 2003 D Operating Voltage Range of 4.5 V to 5.5 V D High-Current 3-State Outputs Interface Directly With System Bus D Typical tpd = 17 ns D Low Power Consumption, 80-µA Max ICC D ±6-mA Output Drive at 5 V D Low Input Current of 1 µA Max D Inputs Are TTL-Voltage Compatible D Provide Bus Interface From Multiple Sources in High-Performance Systems D Buffered Inputs and Outputs SN54HCT257 .
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| Part Number | Description |
|---|---|
| SN54HCT240 | OCTAL BUFFERS AND LINE DRIVER |
| SN54HCT244 | Octal Buffers and Line Driver |
| SN54HCT245 | Octal Bus Transceiver |
| SN54HCT273 | OCTAL D-TYPE FLIP-FLOPS |
| SN54HCT00 | QUADRUPLE 2-INPUT POSITIVE-NAND GATE |
| SN54HCT02 | QUADRUPLE 2-INPUT POSITIVE-NOR GATE |
| SN54HCT04 | HEX INVERTER |
| SN54HCT08 | QUADRUPLE 2-INPUT POSITIVE-AND GATE |
| SN54HCT125 | QUADRUPLE BUS BUFFER GATE |
| SN54HCT138 | 3-Line to 8-Line Decoders/Demultiplexers |