{"id":7937,"date":"2026-06-28T05:54:06","date_gmt":"2026-06-28T05:54:06","guid":{"rendered":"https:\/\/materialparts.com\/sn74ls193n\/"},"modified":"2026-06-28T11:45:42","modified_gmt":"2026-06-28T11:45:42","slug":"sn74ls193n","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/sn74ls193n\/","title":{"rendered":"SN74LS193N"},"content":{"rendered":"

Productos<\/h2>\n

The SN74LS193N from Texas Instruments is a 4-bit synchronous up\/down binary counter with separate up and down clock inputs, asynchronous clear and load, and borrow\/carry outputs for cascading in a 16-pin PDIP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Funci\u00f3n<\/td>\n4-bit synchronous up\/down binary counter<\/td>\n<\/tr>\n
Logic Family<\/td>\nLS (Low-power Schottky)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n4.75V to 5.25V (5V nominal)<\/td>\n<\/tr>\n
Count Range<\/td>\n0 to 15 (4-bit binary)<\/td>\n<\/tr>\n
Clock Inputs<\/td>\nCU (count up) and CD (count down), falling-edge triggered<\/td>\n<\/tr>\n
Asynchronous Clear (CLR)<\/td>\nActive-high, resets count to 0000<\/td>\n<\/tr>\n
Asynchronous Load (LOAD)<\/td>\nActive-low, loads D inputs to Q outputs<\/td>\n<\/tr>\n
Data Inputs<\/td>\nD0-D3 (parallel load)<\/td>\n<\/tr>\n
Carry Output (CO)<\/td>\nGoes LOW when count=15 and CU goes LOW<\/td>\n<\/tr>\n
Borrow Output (BO)<\/td>\nGoes LOW when count=0 and CD goes LOW<\/td>\n<\/tr>\n
Maximum Clock Frequency<\/td>\n25MHz typical<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n0\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nPDIP-16 (19.3 x 6.35mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 4-bit synchronous up\/down binary counter<\/li>\n
  • Separate up and down clock inputs<\/li>\n
  • Asynchronous parallel load<\/li>\n
  • Asynchronous clear<\/li>\n
  • Carry and borrow outputs for cascading<\/li>\n
  • Count in either direction independently<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Up\/down counting<\/li>\n
    • Position tracking (motor encoder)<\/li>\n
    • Frequency division<\/li>\n
    • Digital potentiometer control<\/li>\n
    • Programmable timer\/counter<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74LS193N from Texas Instruments is a 4-bit synchronous up\/down binary counter with separate up and down clock inputs, asynchronous clear and load, and borrow\/carry outputs for cascading in a 16-pin PDIP package. Key Specifications Function 4-bit synchronous up\/down binary counter Logic Family LS (Low-power Schottky) Supply Voltage 4.75V to 5.25V (5V nominal) […]<\/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-7937","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"4-bit up\/down binary counter, separate CU\/CD, async CLR\/LOAD, CO\/BO, PDIP-16","date_code":"","package_case":"PDIP-16 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":3800,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74ls193.pdf","price":"$0.58 @ 1ku","product_introduction":"The SN74LS193N from Texas Instruments is a 4-bit synchronous up\/down binary counter that counts from 0 to 15 in either direction. The unique feature is separate count-up (CU) and count-down (CD) clock inputs, both falling-edge triggered: a HIGH-to-LOW transition on CU increments the count, and a HIGH-to-LOW transition on CD decrements it. The unused clock input must be held HIGH. The asynchronous clear (CLR) input resets the count to 0000 when HIGH, regardless of the clocks. The asynchronous load (LOAD) input, when LOW, transfers the parallel data inputs (D0-D3) to the outputs (Q0-Q3), allowing presetting the count to any value. The carry output (CO) goes LOW when the count reaches 15 and CU goes LOW, and the borrow output (BO) goes LOW when the count reaches 0 and CD goes LOW. These outputs enable cascading: CO connects to the CU of the next stage, and BO connects to the CD of the next stage, for multi-decade or multi-digit counting. The N suffix denotes the PDIP-16 through-hole package.","working_principle":"The SN74LS193N counts in binary from 0000 (0) to 1111 (15). On the falling edge of CU (count-up clock), the count increments by 1; on the falling edge of CD (count-down clock), it decrements by 1. The unused clock input must be held HIGH to prevent spurious counting. The counter wraps around: incrementing past 1111 returns to 0000, and decrementing below 0000 wraps to 1111. The carry output (CO) provides a LOW pulse when the count is 1111 and CU goes LOW; this connects to the CU input of the next higher-order counter, enabling it to count once per 16 counts of the lower counter. Similarly, the borrow output (BO) provides a LOW pulse when the count is 0000 and CD goes LOW, cascading the down-count to the next stage. The asynchronous clear (CLR) forces the count to 0000 when HIGH, regardless of clock or load inputs. The asynchronous load (LOAD) transfers D0-D3 to Q0-Q3 when LOW, allowing the count to be preset to any value. For example, loading 1001 (9) and counting up gives 6 more counts before wrapping, creating a divide-by-6 counter. The 193 is fully synchronous within each stage (all four bits change simultaneously), but cascading between stages is ripple (asynchronous).","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>CO<\/td>Output<\/td>Carry output (LOW when count=15 and CU=LOW)<\/td><\/tr>\n
      2<\/td>CD<\/td>Input<\/td>Count-down clock (falling edge triggered, hold HIGH when not counting down)<\/td><\/tr>\n
      3<\/td>Q3<\/td>Output<\/td>Count output bit 3 (MSB)<\/td><\/tr>\n
      4<\/td>Q2<\/td>Output<\/td>Count output bit 2<\/td><\/tr>\n
      5<\/td>Q1<\/td>Output<\/td>Count output bit 1<\/td><\/tr>\n
      6<\/td>Q0<\/td>Output<\/td>Count output bit 0 (LSB)<\/td><\/tr>\n
      7<\/td>CU<\/td>Input<\/td>Count-up clock (falling edge triggered, hold HIGH when not counting up)<\/td><\/tr>\n
      8<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      9<\/td>D0<\/td>Input<\/td>Parallel data input bit 0 (LSB)<\/td><\/tr>\n
      10<\/td>D1<\/td>Input<\/td>Parallel data input bit 1<\/td><\/tr>\n
      11<\/td>D2<\/td>Input<\/td>Parallel data input bit 2<\/td><\/tr>\n
      12<\/td>D3<\/td>Input<\/td>Parallel data input bit 3 (MSB)<\/td><\/tr>\n
      13<\/td>BO<\/td>Output<\/td>Borrow output (LOW when count=0 and CD=LOW)<\/td><\/tr>\n
      14<\/td>CLR<\/td>Input<\/td>Asynchronous clear (active HIGH, resets to 0000)<\/td><\/tr>\n
      15<\/td>LOAD<\/td>Input<\/td>Asynchronous load (active LOW, loads D0-D3 to Q0-Q3)<\/td><\/tr>\n
      16<\/td>VCC<\/td>Power<\/td>Supply (4.75V to 5.25V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Position Counter:<\/strong> Motor encoder A\u2192CU, B\u2192CD; counts up on CW, down on CCW; Q0-Q3 = 4-bit position<\/li>\n
      • 8-Bit Counter:<\/strong> Two 193s cascaded; CO\u2192CU of next, BO\u2192CD of next; 0-255 count range<\/li>\n
      • Divide-by-N:<\/strong> Load N, count up to 15; CO triggers LOAD; divides clock by (16-N)<\/li>\n
      • Up\/Down Timer:<\/strong> Load initial value; CU increments toward 15, CD decrements toward 0; BO\/CO detect endpoints<\/li>\n
      • Digital Pot:<\/strong> CU\/CD from buttons; Q0-Q3 drive R-2R DAC; each press adjusts voltage up or down<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        74LS193N<\/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
        74LS193D<\/td>TI\/Nexperia<\/td>Surface-mount SOIC version of LS with identical logic function<\/td>SOIC-16<\/td>5V TTL<\/td><\/tr>\n
        74HC193D<\/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
        74HC193N<\/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
        74HCT193D<\/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
        74HCT193N<\/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 74193 is a 4-Bit Binary Counter (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\/es\/wp-json\/wp\/v2\/posts\/7937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=7937"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7937\/revisions"}],"predecessor-version":[{"id":8181,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7937\/revisions\/8181"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7937"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}