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SN74ALS253

Texas Instruments
Part Number SN74ALS253
Manufacturer Texas Instruments
Description Dual 1-of-4 Data Selectors/Multiplexers
Published Dec 10, 2020
Detailed Description SN54ALS253, SN74ALS253, SN74AS253A DUAL 1ĆOFĆ4 DATA SELECTORS/MULTIPLEXERS WITH 3ĆSTATE OUTPUTS SDAS216A − APRIL 1982 − ...
Datasheet PDF File SN74ALS253 PDF File

SN74ALS253
SN74ALS253

Overview
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1ĆOFĆ4 DATA SELECTORS/MULTIPLEXERS WITH 3ĆSTATE OUTPUTS SDAS216A − APRIL 1982 − REVISED DECEMBER 1994 • 3-State Versions of the ′ALS153 and SN74AS153 • Permits Multiplexing From n Lines to One Line • Performs Parallel-to-Serial Conversion • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description SN54ALS253 .
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J PACKAGE SN74ALS253, SN74AS253A .
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D OR N PACKAGE (TOP VIEW) 1OE 1 B2 1C3 3 1C2 4 1C1 5 1C0 6 1Y 7 GND 8 16 VCC 15 2OE 14 A 13 2C3 12 2C2 11 2C1 10 2C0 9 2Y These data selectors/multiplexers contain inverters and drivers to supply full binary decoding data selection to the AND-OR gates.
Separate output control inputs are provided for each of the two 4-line sections.
B 1OE NC VCC 2OE SN54ALS253 .
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FK PACKAGE (TOP VIEW) The 3-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 drives the bus line to a high or low logic level.
Each output has its own output-enable (OE) input.
The output is disabled when OE is high.
3 2 1 20 19 1C3 4 18 A 1C2 5 17 2C3 NC 6 16 NC 1C1 7 15 2C2 1C0 8 14 2C1 9 10 11 12 13 1Y GND NC 2Y 2C0 The SN54ALS253 is characterized for operation over the full military temperature range of − 55°C to 125°C.
The SN74ALS253 and SN74AS253A are characterized for operation from 0°C to 70°C.
NC − No internal connection FUNCTION TABLE SELECT† B A INPUTS DATA OE C0 C1 C2 C3 X X X X X X H L L L X X X L L L H X X X L L H X L X X L L H X H X X L H L X X L X L H L X X H X L H H X X X L L H H X X X H L † Select inputs A and B are common to both sections.
OUTPUT Y Z L H L H L H L H PRODUCTION DATA information is current as of publication date.
Products conform to specification...


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