{"id":6988,"date":"2026-06-22T12:15:47","date_gmt":"2026-06-22T12:15:47","guid":{"rendered":"https:\/\/materialparts.com\/mc74vhc1g32dft2g-2\/"},"modified":"2026-06-22T12:15:47","modified_gmt":"2026-06-22T12:15:47","slug":"mc74vhc1g32dft2g-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mc74vhc1g32dft2g-2\/","title":{"rendered":"MC74VHC1G32DFT2G"},"content":{"rendered":"

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

The MC74VHC1G32DFT2G from onsemi is a single 2-input OR gate with TTL-compatible inputs, 2-5.5V VCC, 3.5ns propagation delay, and SC-88A (SC-70-5) 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
\u0627\u0644\u0646\u0648\u0639<\/td>\nSingle 2-Input OR Gate (TTL-Compatible Inputs)<\/td>\n<\/tr>\n
Logic Function<\/td>\nOR (Y = A + B)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.0V to 5.5V<\/td>\n<\/tr>\n
\u062a\u0623\u062e\u064a\u0631 \u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631<\/td>\n3.5 ns (typ) at VCC=5V; 7.5 ns (max) at VCC=4.5-5.5V<\/td>\n<\/tr>\n
Input Threshold<\/td>\nTTL: VIH=2.0V, VIL=0.8V (T32 variant)<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-8 mA at 3.0V VCC<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n1 uA (max) at 25C<\/td>\n<\/tr>\n
Input Overvoltage<\/td>\nTolerant to 5.5V (regardless of VCC)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSC-88A \/ SC-70-5 (DFT2 suffix)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55C to +125C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • TTL-compatible input thresholds (MC74VHC1GT32)<\/li>\n
  • 2.0V to 5.5V VCC operation<\/li>\n
  • 3.5ns typical propagation delay at 5V<\/li>\n
  • Input overvoltage tolerant to 5.5V<\/li>\n
  • IOFF partial power-down protection<\/li>\n
  • +\/-8mA output drive at 3V<\/li>\n
  • Pb-free, halogen-free, RoHS compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Logic-level translation (3V to 5V)<\/li>\n
    • General-purpose logic glue<\/li>\n
    • Signal combining and OR-ing<\/li>\n
    • Buffer\/interface logic<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MC74VHC1G32DFT2G from onsemi is a single 2-input OR gate with TTL-compatible inputs, 2-5.5V VCC, 3.5ns propagation delay, and SC-88A (SC-70-5) package. Key Specifications Type Single 2-Input OR Gate (TTL-Compatible Inputs) Logic Function OR (Y = A + B) Supply Voltage 2.0V to 5.5V Propagation Delay 3.5 ns (typ) at VCC=5V; 7.5 ns […]<\/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":[19,13],"tags":[],"chip_brand":[144],"class_list":["post-6988","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"Single 2-Input OR Gate, TTL In, 2-5.5V, SC-70-5","date_code":"","package_case":"SC-88A \/ SC-70-5 (2.0 x 1.25 x 1.0 mm, 0.65mm pitch)","in_stock":15000,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/mc74vhc1g32-d.pdf","price":"$0.024 @ 1ku","product_introduction":"The MC74VHC1G32DFT2G from onsemi is a single 2-input OR gate in a tiny SC-88A (SC-70-5) surface-mount package. The DFT2 suffix denotes the SC-88A package with tape and reel packaging, and G indicates the Pb-free version. The MC74VHC1G32 variant has CMOS-level input thresholds, while the MC74VHC1GT32 variant (indicated by the T in the full part number MC74VHC1GT32DFT2G) has TTL-compatible input thresholds (VIH=2.0V, VIL=0.8V). The TTL input thresholds allow the gate to interface directly with 5V TTL logic outputs even when operating at a lower VCC (e.g., 3.3V), because a 5V TTL output high level (2.4V minimum) exceeds the 2.0V VIH threshold. The input overvoltage tolerance to 5.5V regardless of VCC allows the gate to be used as a logic-level translator from 5V CMOS to 3.3V CMOS: the inputs can be driven by 5V signals while VCC is 3.3V, and the outputs will swing to 3.3V CMOS levels. The IOFF circuit ensures that when VCC is 0V, the inputs and outputs are disabled and do not load the bus, preventing back-feeding in power-down scenarios. The 1uA maximum quiescent current at 25C minimizes standby power consumption.","working_principle":"The MC74VHC1G32DFT2G implements the OR logic function Y = A + B using CMOS transistor-level logic. The OR function is built from NAND and NOR gates with inverters using the DeMorgan equivalent implementation: Y = A + B = (A' * B')' . The three-stage internal circuit provides buffering for high noise immunity and stable output characteristics. The TTL-compatible input threshold variant (T32) uses a modified input stage that sets the switching threshold at TTL levels (VIH=2.0V, VIL=0.8V) rather than CMOS levels (VIH=0.7xVCC, VIL=0.3xVCC). This allows the gate to recognize 5V TTL logic levels even when operating at 3.3V VCC. The output stage uses a balanced CMOS push-pull driver (P-channel pull-up, N-channel pull-down) providing symmetrical output impedance and rail-to-rail output swing. The input protection circuit uses diodes to VCC and GND that clamp input voltages beyond the supply rails, and the overvoltage-tolerant input structure allows the protection diodes to block (not conduct) when the input voltage exceeds VCC up to 5.5V, achieved by isolating the VCC-referenced clamp diode from the input.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>A<\/td>Input<\/td>OR gate input A<\/td><\/tr>
      2<\/td>B<\/td>Input<\/td>OR gate input B<\/td><\/tr>
      3<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      4<\/td>Y<\/td>Output<\/td>OR gate output (Y = A + B)<\/td><\/tr>
      5<\/td>VCC<\/td>Power<\/td>Supply voltage (2.0-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • 3.3V to 5V logic level translation: 3.3V MCU GPIO OR-ed with 5V peripheral interrupt using TTL input thresholds and 5.5V input overvoltage tolerance<\/li>
      • Power-good OR-ing: two power supply PGOOD signals (active-low) combined through OR gate with pull-up to create a combined power-good indicator<\/li>
      • General-purpose glue logic in space-constrained design where a single OR function is needed in a 2x1.25mm SC-70-5 footprint<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        onsemi<\/td>MC74VHC1G32DFT1G<\/td>SC-88A<\/td>CMOS-level inputs (non-T)<\/td><\/tr>
        TI<\/td>SN74LVC1G32DCKR<\/td>SC-70-5<\/td>Direct equivalent, TI brand<\/td><\/tr>
        NXP<\/td>74LVC1G32GW<\/td>SOT-353<\/td>Equivalent, different brand<\/td><\/tr>
        Toshiba<\/td>TC7SG32FU<\/td>USV-5<\/td>Equivalent, Toshiba brand<\/td><\/tr>
        onsemi<\/td>NL27WZ32DFT2G<\/td>SC-88A<\/td>Dual OR gate, same footprint<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6988","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=6988"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6988\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6988"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6988"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}