{"id":7964,"date":"2026-06-28T06:17:31","date_gmt":"2026-06-28T06:17:31","guid":{"rendered":"https:\/\/materialparts.com\/sn74ls151n\/"},"modified":"2026-06-28T11:45:09","modified_gmt":"2026-06-28T11:45:09","slug":"sn74ls151n","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/sn74ls151n\/","title":{"rendered":"SN74LS151N"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The SN74LS151N from Texas Instruments is an 8-line to 1-line data selector\/multiplexer with complementary outputs and active-LOW strobe, capable of selecting one-of-eight data sources or implementing any 4-variable Boolean function in a 16-pin PDIP package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\n8-line to 1-line data selector\/multiplexer<\/td>\n<\/tr>\n
\u0639\u0627\u0626\u0644\u0629 \u0627\u0644\u0645\u0646\u0637\u0642<\/td>\nLS (Low-power Schottky)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n4.75V to 5.25V (5V nominal)<\/td>\n<\/tr>\n
Data Inputs<\/td>\nD0\u2013D7 (8 lines)<\/td>\n<\/tr>\n
Select Inputs<\/td>\nS0, S1, S2 (3-bit binary address)<\/td>\n<\/tr>\n
Outputs<\/td>\nY (true) and W (complementary)<\/td>\n<\/tr>\n
Strobe (Enable)<\/td>\nActive LOW (G enables outputs)<\/td>\n<\/tr>\n
Propagation Delay (Data\u2192Y)<\/td>\n12ns typical<\/td>\n<\/tr>\n
Propagation Delay (Select\u2192Y)<\/td>\n18\u201337ns typical<\/td>\n<\/tr>\n
Output Drive (IOL\/IOH)<\/td>\n8mA \/ -0.4mA<\/td>\n<\/tr>\n
Supply Current<\/td>\n6\u201310mA typical<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nPDIP-16 (19.3 x 6.35mm)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Selects one-of-eight data lines<\/li>\n
  • Complementary Y and W outputs<\/li>\n
  • Active-LOW strobe for enabling\/disabling<\/li>\n
  • Parallel-to-serial conversion capability<\/li>\n
  • Can implement any 4-variable Boolean function<\/li>\n
  • Input clamp diodes simplify system design<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Data routing and selection<\/li>\n
    • Parallel-to-serial conversion<\/li>\n
    • Boolean function generation<\/li>\n
    • GPIO expansion for microcontrollers<\/li>\n
    • Address decoding<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74LS151N from Texas Instruments is an 8-line to 1-line data selector\/multiplexer with complementary outputs and active-LOW strobe, capable of selecting one-of-eight data sources or implementing any 4-variable Boolean function in a 16-pin PDIP package. Key Specifications Function 8-line to 1-line data selector\/multiplexer Logic Family LS (Low-power Schottky) Supply Voltage 4.75V to 5.25V […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-7964","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"8-to-1 data selector\/multiplexer, LS TTL, complementary outputs, PDIP-16","date_code":"","package_case":"PDIP-16 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":5000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74ls151.pdf","price":"$0.471 @ 1ku","product_introduction":"The SN74LS151N from Texas Instruments is an 8-line to 1-line data selector\/multiplexer built with LS TTL technology. It uses three select inputs (S0, S1, S2) to route one of eight data inputs (D0\u2013D7) to the Y output, with the complementary signal available at W. The strobe (G) input, when HIGH, forces Y LOW and W HIGH regardless of other inputs \u2014 effectively disabling the device. The 74151 is more than a simple multiplexer: with the eight data inputs tied HIGH or LOW in specific patterns, it can implement any Boolean function of four variables (the three select lines plus the strobe form the four inputs). This makes it a universal logic function generator. For data routing, the 74151 consolidates up to eight signal sources into a single line, reducing pin count on microcontrollers. The N suffix denotes the PDIP-16 through-hole package.","working_principle":"The SN74LS151N implements the logic function: Y = G \u00b7 (D0\u00b7S0'\u00b7S1'\u00b7S2' + D1\u00b7S0\u00b7S1'\u00b7S2' + D2\u00b7S0'\u00b7S1\u00b7S2' + D3\u00b7S0\u00b7S1\u00b7S2' + D4\u00b7S0'\u00b7S1'\u00b7S2 + D5\u00b7S0\u00b7S1'\u00b7S2 + D6\u00b7S0'\u00b7S1\u00b7S2 + D7\u00b7S0\u00b7S1\u00b7S2). When G is LOW (enabled), the 3-bit binary address on S0\u2013S2 selects which data input appears at Y; W is always the complement of Y. When G is HIGH, Y=0 and W=1 regardless of data and select inputs. For data multiplexing: if S2S1S0 = 101 (binary 5), then Y = D5 (the data on input 5). For Boolean function generation: each data input Di is tied to either VCC (1) or GND (0) to represent the desired truth table output for that minterm. For example, to implement the XOR of S0 and S1 (with S2=G=0): set D0=0, D1=1, D2=1, D3=0, D4\u2013D7=don't care. Then Y = S0'\u00b7S1'\u00b70 + S0\u00b7S1'\u00b71 + S0'\u00b7S1\u00b71 + S0\u00b7S1\u00b70 = S0\u2295S1.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>D3<\/td>Input<\/td>Data input 3<\/td><\/tr>\n
      2<\/td>D2<\/td>Input<\/td>Data input 2<\/td><\/tr>\n
      3<\/td>D1<\/td>Input<\/td>Data input 1<\/td><\/tr>\n
      4<\/td>D0<\/td>Input<\/td>Data input 0<\/td><\/tr>\n
      5<\/td>Y<\/td>Output<\/td>Multiplexer output (true)<\/td><\/tr>\n
      6<\/td>W<\/td>Output<\/td>Complementary multiplexer output<\/td><\/tr>\n
      7<\/td>G<\/td>Input<\/td>Strobe\/Enable (active LOW)<\/td><\/tr>\n
      8<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      9<\/td>S2<\/td>Input<\/td>Select input 2 (MSB)<\/td><\/tr>\n
      10<\/td>S1<\/td>Input<\/td>Select input 1<\/td><\/tr>\n
      11<\/td>S0<\/td>Input<\/td>Select input 0 (LSB)<\/td><\/tr>\n
      12<\/td>D7<\/td>Input<\/td>Data input 7<\/td><\/tr>\n
      13<\/td>D6<\/td>Input<\/td>Data input 6<\/td><\/tr>\n
      14<\/td>D5<\/td>Input<\/td>Data input 5<\/td><\/tr>\n
      15<\/td>D4<\/td>Input<\/td>Data input 4<\/td><\/tr>\n
      16<\/td>VCC<\/td>Power<\/td>Supply (5V)<\/td><\/tr>\n<\/table>\n

      SN74LS151N uses the PDIP-16 package: VCC at Pin 16, GND at Pin 8. The 8 data inputs (D0-D7) are on Pins 4-1, 15, 14, 13, 12 respectively. Three select lines (A\/B\/C) on Pins 11, 10, 9 choose which input appears at the outputs. Pin 5 = Y output (true), Pin 6 = W output (complement). Pin 7 = Strobe (active-low enable). When Strobe is HIGH, Y is forced LOW and W is forced HIGH regardless of select inputs. The complementary outputs (Y and W) eliminate the need for an external inverter in many applications. For HC version with wider voltage range, 74HC151 provides the same pinout at 2-6V supply.<\/p>","application_scenarios":"

        \n
      • 8-Channel Data Selector:<\/strong> 8 sensor outputs \u2192 D0\u2013D7; MCU 3 GPIOs \u2192 S0\u2013S2; G=GND; Y \u2192 MCU ADC input; scan channels by changing S0\u2013S2<\/li>\n
      • Parallel-to-Serial:<\/strong> 8-bit parallel data on D0\u2013D7; counter on S0\u2013S2; Y outputs one bit per clock; serializes 8-bit word<\/li>\n
      • Function Generator:<\/strong> Tie D0\u2013D7 to VCC\/GND per truth table; S0\u2013S2 are function inputs; Y = Boolean function of 3 variables<\/li>\n
      • 16-to-1 Mux:<\/strong> Two 74151 chips; MSB selects which chip via G; combine Y outputs with AND gate; selects 1 of 16 lines<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        74LS151N<\/td>TI\/Nexperia<\/td>Original TTL version with 5V-only supply, typical propagation delay 10-15ns<\/td>DIP-16<\/td>5V TTL<\/td><\/tr>\n
        74LS151D<\/td>TI\/Nexperia<\/td>Surface-mount SOIC version of LS with identical logic function<\/td>SOIC-16<\/td>5V TTL<\/td><\/tr>\n
        74HC151D<\/td>TI\/Nexperia<\/td>CMOS version with wide 2-6V supply range, lower power consumption and higher noise immunity<\/td>SOIC-16<\/td>2-6V CMOS<\/td><\/tr>\n
        74HC151N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of HC family for prototyping and repair<\/td>DIP-16<\/td>2-6V CMOS<\/td><\/tr>\n
        74HCT151D<\/td>TI\/Nexperia<\/td>CMOS with TTL-compatible input levels, ideal for mixing with LS devices at 5V<\/td>SOIC-16<\/td>4.5-5.5V TTL-in<\/td><\/tr>\n
        74HCT151N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of HCT family for prototyping and repair<\/td>DIP-16<\/td>4.5-5.5V TTL-in<\/td><\/tr>\n
        74AC151D<\/td>TI\/Nexperia<\/td>Advanced CMOS with 2-6V supply and higher output drive current (24mA vs 6mA for HC)<\/td>SOIC-16<\/td>2-6V CMOS<\/td><\/tr>\n
        74AC151N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of AC family for prototyping and repair<\/td>DIP-16<\/td>2-6V CMOS<\/td><\/tr>\n<\/table>\n

        The 74151 is a 8-Line to 1-Line Data Selector\/Multiplexer. Family variants span from the original LS TTL (5V only) to modern LVC\/AUP (down to 0.8V). HC and HCT versions offer 2-6V CMOS operation with HCT providing TTL-compatible input thresholds for mixed 5V systems. CD4000-series equivalents offer the widest 3-18V supply range at the cost of lower switching speed. DIP packages (N suffix) are through-hole; SOIC (D suffix) and TSSOP are surface-mount.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=7964"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7964\/revisions"}],"predecessor-version":[{"id":8168,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7964\/revisions\/8168"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7964"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7964"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}