{"id":8010,"date":"2026-06-28T06:44:50","date_gmt":"2026-06-28T06:44:50","guid":{"rendered":"https:\/\/materialparts.com\/sn74ls192n\/"},"modified":"2026-06-28T11:43:59","modified_gmt":"2026-06-28T11:43:59","slug":"sn74ls192n","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/sn74ls192n\/","title":{"rendered":"SN74LS192N"},"content":{"rendered":"

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

The SN74LS192N from Texas Instruments is a synchronous 4-bit BCD up\/down counter with separate up and down clock inputs, asynchronous clear, and parallel load \u2014 the most versatile BCD counter in the LS family 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
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\nSynchronous 4-bit BCD up\/down counter<\/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<\/td>\n<\/tr>\n
Count Range<\/td>\n0-9 (BCD decade)<\/td>\n<\/tr>\n
Clock Inputs<\/td>\nUP (count up), DOWN (count down), separate, negative-edge<\/td>\n<\/tr>\n
Parallel Load<\/td>\nAsynchronous, active-LOW (LOAD)<\/td>\n<\/tr>\n
Clear<\/td>\nAsynchronous, active-HIGH (CLR)<\/td>\n<\/tr>\n
Carry\/Borrow<\/td>\nCO (carry out, active-LOW), BO (borrow out, active-LOW)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0633\u0627\u0639\u0629<\/td>\n25MHz 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
  • Separate UP and DOWN clock inputs<\/li>\n
  • Synchronous counting in both directions<\/li>\n
  • Asynchronous parallel load (preset any BCD value)<\/li>\n
  • Asynchronous clear (CLR, active-HIGH)<\/li>\n
  • Carry and borrow outputs for cascading<\/li>\n
  • BCD count sequence: 0-9 up, 9-0 down<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Up\/down decade counters<\/li>\n
    • Digital position encoders<\/li>\n
    • Score counters<\/li>\n
    • Frequency synthesizers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74LS192N from Texas Instruments is a synchronous 4-bit BCD up\/down counter with separate up and down clock inputs, asynchronous clear, and parallel load \u2014 the most versatile BCD counter in the LS family in a 16-pin PDIP package. Key Specifications Function Synchronous 4-bit BCD up\/down counter Logic Family LS (Low-power Schottky) Supply […]<\/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-8010","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"4-bit BCD up\/down counter, separate clocks, async load\/clear, carry\/borrow, LS TTL, PDIP-16","date_code":"","package_case":"PDIP-16 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":3000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74ls192.pdf","price":"$1.00 @ 1ku","product_introduction":"The SN74LS192N from Texas Instruments is a synchronous 4-bit BCD up\/down counter with separate UP and DOWN clock inputs. This dual-clock design means the counter direction is determined by which clock input receives pulses: pulses on UP count 0\u21921\u21922\u2192...\u21929\u21920; pulses on DOWN count 9\u21928\u21927\u2192...\u21920\u21929. The unused clock input must be held HIGH during counting. The 74192 is the most feature-rich BCD counter: it has asynchronous parallel load (LOAD=LOW loads D0-D3 into the counter regardless of clocks), asynchronous clear (CLR=HIGH resets to 0), and carry\/borrow outputs for cascading. CO goes LOW when counting UP and the count reaches 9 (carry to next stage); BO goes LOW when counting DOWN and the count reaches 0 (borrow from next stage). For cascading: CO \u2192 UP of next stage; BO \u2192 DOWN of next stage. The 74193 is the binary (0-15) version with identical pinout. The N suffix denotes the PDIP-16 package.","working_principle":"The SN74LS192N counts in BCD (0-9) on the negative edge of either the UP or DOWN clock. Counting UP: pulses on UP, DOWN must be HIGH. Sequence: 0\u21921\u21922\u21923\u21924\u21925\u21926\u21927\u21928\u21929\u21920 (carry). At 9, CO goes LOW on the next UP clock (carry to next decade). Counting DOWN: pulses on DOWN, UP must be HIGH. Sequence: 9\u21928\u21927\u21926\u21925\u21924\u21923\u21922\u21921\u21920\u21929 (borrow). At 0, BO goes LOW on the next DOWN clock (borrow from next decade). Parallel load: LOAD=LOW loads D0-D3 into the counter asynchronously (overrides clocks and counting). CLR=HIGH resets Q0-Q3 to 0 asynchronously (overrides LOAD, clocks). Priority: CLR > LOAD > clocks. For multi-decade counting: CO of units \u2192 UP of tens; BO of units \u2192 DOWN of tens; both clock inputs of tens are independently driven by the carry\/borrow of the units stage. The 74192 counts in BCD; the 74193 (same pinout) counts in binary (0-15). Both share the same dual-clock, load, clear, carry\/borrow architecture.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>DOWN<\/td>Input<\/td>Count-down clock (negative edge, UP must be HIGH)<\/td><\/tr>\n
      2<\/td>Q1<\/td>Output<\/td>Output bit 1<\/td><\/tr>\n
      3<\/td>Q0<\/td>Output<\/td>Output bit 0 (LSB)<\/td><\/tr>\n
      4<\/td>BO<\/td>Output<\/td>Borrow output (active-LOW; LOW at count=0 with DOWN clock)<\/td><\/tr>\n
      5<\/td>CO<\/td>Output<\/td>Carry output (active-LOW; LOW at count=9 with UP clock)<\/td><\/tr>\n
      6<\/td>Q3<\/td>Output<\/td>Output bit 3 (MSB)<\/td><\/tr>\n
      7<\/td>Q2<\/td>Output<\/td>Output bit 2<\/td><\/tr>\n
      8<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      9<\/td>D2<\/td>Input<\/td>Parallel data input bit 2<\/td><\/tr>\n
      10<\/td>D3<\/td>Input<\/td>Parallel data input bit 3 (MSB)<\/td><\/tr>\n
      11<\/td>D0<\/td>Input<\/td>Parallel data input bit 0 (LSB)<\/td><\/tr>\n
      12<\/td>D1<\/td>Input<\/td>Parallel data input bit 1<\/td><\/tr>\n
      13<\/td>LOAD<\/td>Input<\/td>Parallel load enable (active-LOW, loads D0-D3)<\/td><\/tr>\n
      14<\/td>CLR<\/td>Input<\/td>Asynchronous clear (active-HIGH, resets to 0)<\/td><\/tr>\n
      15<\/td>UP<\/td>Input<\/td>Count-up clock (negative edge, DOWN must be HIGH)<\/td><\/tr>\n
      16<\/td>VCC<\/td>Power<\/td>Supply (5V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • 2-Digit Score Counter:<\/strong> Two 74192s; units CO \u2192 tens UP; units BO \u2192 tens DOWN; UP button increments; DOWN button decrements; score 00-99<\/li>\n
      • Presettable Counter:<\/strong> D0-D3 set to desired start value; pulse LOAD; counter starts from preset value; count up or down from preset<\/li>\n
      • Position Encoder:<\/strong> Rotary encoder generates UP\/DOWN pulses; 74192 tracks position (0-9); display on 7-segment via CD4511<\/li>\n
      • Frequency Synthesizer:<\/strong> Thumbwheel switches \u2192 D0-D3; LOAD presets divider ratio; counter counts down to 0; BO reloads preset; programmable divider<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        74LS192N<\/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
        74LS192D<\/td>TI\/Nexperia<\/td>Surface-mount SOIC version of LS with identical logic function<\/td>SOIC-16<\/td>5V TTL<\/td><\/tr>\n
        74HC192D<\/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
        74HC192N<\/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
        74HCT192D<\/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
        74HCT192N<\/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<\/table>\n

        The 74192 is a 4-Bit Decade Counter (BCD, Up\/Down). 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\/8010","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=8010"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/8010\/revisions"}],"predecessor-version":[{"id":8129,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/8010\/revisions\/8129"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=8010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=8010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=8010"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=8010"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}