Description
FairChild 74LS253 IC 3-state Data Selector/multiplexer
Each of these Schottky-clamped data selectors/multiplex- ers contains inverters and drivers to supply fully comple- mentary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are pro- vided for each of the two four-line sections. The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enabled output will drive the bus line to a HIGH or LOW logic level.
Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections.
The three-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the low-impedance of the single enabled output will drive the bus line to a high or low logic level.
Features
- Three-State Version of SN54/74LS153, SN54/74S153
- Schottky-Diode-Clamped Transistors
- Permits Multiplexing from N Lines to 1 Line
- Performs Parallel-to Serial Conversion
- Fully Compatible with Most TTL Circuits
- Low Power Dissipation
- ‘LS253 … 35 mW Typical
- ‘S253 … 225 mW Typical
Manufacturer:Fairchild Semiconductor
Datasheet:74LS253.pdf
