{"id":6452,"date":"2026-06-16T03:53:12","date_gmt":"2026-06-16T03:53:12","guid":{"rendered":"https:\/\/materialparts.com\/am26c31mjr\/"},"modified":"2026-06-29T09:39:21","modified_gmt":"2026-06-29T09:39:21","slug":"am26c31mjr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/am26c31mjr\/","title":{"rendered":"AM26C31MJR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The AM26C31MJR is a quadruple differential line driver from Texas Instruments that meets or exceeds TIA\/EIA-422-B and ITU V.11 standards. Using BiCMOS technology, it achieves 7ns propagation delay with only 100\u00b5A typical supply current. The military-grade MJR suffix specifies operation from -55\u00b0C to +125\u00b0C in a 16-pin CDIP package, with \u00b12000V HBM ESD protection and high-impedance outputs when powered down.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Drivers<\/td>\n4 (differential, complementary outputs)<\/td>\n<\/tr>\n
Standard<\/td>\nTIA\/EIA-422-B, ITU V.11<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n5V (single supply)<\/td>\n<\/tr>\n
Signaling Rate<\/td>\nUp to 10 Mbps<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n7 ns typical (tPLH = tPHL)<\/td>\n<\/tr>\n
Pulse Skew<\/td>\n0.5 ns typical<\/td>\n<\/tr>\n
Supply Current<\/td>\n100 \u00b5A typical (no load)<\/td>\n<\/tr>\n
Differential Output Voltage<\/td>\n2V minimum (RL = 100\u03a9)<\/td>\n<\/tr>\n
Common-Mode Range<\/td>\n-7V to +7V<\/td>\n<\/tr>\n
Outputs<\/td>\n3-state, high impedance when disabled or powered down<\/td>\n<\/tr>\n
Enable<\/td>\nActive-high (G) and active-low (G\u0304) enable inputs<\/td>\n<\/tr>\n
Fault Protection<\/td>\n-14V to +14V<\/td>\n<\/tr>\n
ESD Protection<\/td>\n\u00b12000V HBM, \u00b11000V CDM<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n16-pin CDIP (ceramic)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\u00b0C (military)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Meets TIA\/EIA-422-B and ITU V.11 requirements<\/li>\n
  • BiCMOS technology: high speed with low power<\/li>\n
  • 7ns propagation delay and 0.5ns pulse skew<\/li>\n
  • 3-state outputs with high-impedance on power-down<\/li>\n
  • Dual enable inputs (active-high and active-low)<\/li>\n
  • Complementary differential outputs<\/li>\n
  • Direct replacement for AM26LS31 with improved specs<\/li>\n
  • MIL-PRF-38535 qualified (M suffix)<\/li>\n
  • \u00b12000V HBM ESD protection<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Military and aerospace communication systems<\/li>\n
    • Industrial RS-422 bus transmitters<\/li>\n
    • Motor encoder interfaces<\/li>\n
    • Field transmitters (pressure, temperature sensors)<\/li>\n
    • Modbus communication links<\/li>\n
    • Long-distance balanced data transmission<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AM26C31MJR is a quadruple differential line driver from Texas Instruments that meets or exceeds TIA\/EIA-422-B and ITU V.11 standards. Using BiCMOS technology, it achieves 7ns propagation delay with only 100\u00b5A typical supply current. The military-grade MJR suffix specifies operation from -55\u00b0C to +125\u00b0C in a 16-pin CDIP package, with \u00b12000V HBM ESD […]<\/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":[330],"class_list":["post-6452","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-esmt"],"acf":{"brief_explanation":"Quad RS-422 diff line driver, 10Mbps, 7ns prop delay, BiCMOS, 3-state, mil-temp -55~125\u00b0C, 16-CDIP","date_code":"","package_case":"16-pin CDIP (21.3 x 6.9mm, ceramic)","in_stock":14623,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/am26c31.pdf","price":"$3.80 @ 1ku","product_introduction":"The AM26C31MJR is a military-grade quadruple differential line driver from Texas Instruments, designed to meet or exceed TIA\/EIA-422-B and ITU V.11 interface standards. Built with BiCMOS technology, it achieves 7ns propagation delay and 0.5ns pulse skew while drawing only 100\u00b5A typical supply current \u2014 dramatically lower than the bipolar AM26LS31 it replaces. The device features four independent differential drivers with complementary outputs, dual enable inputs (active-high G and active-low G\u0304), and 3-state outputs that go high-impedance when disabled or powered down. The MJR suffix denotes the ceramic CDIP package with full military temperature range (-55\u00b0C to +125\u00b0C) and MIL-PRF-38535 qualification.","working_principle":"Each of the four AM26C31 drivers takes a single-ended TTL\/CMOS input (A) and generates a complementary differential output pair (Y and Z). When the input is high, Y is high and Z is low; when input is low, Y is low and Z is high. The differential output swings approximately 2V across a 100\u03a9 load, meeting the EIA-422 minimum requirement. The BiCMOS output stage combines bipolar transistors for high drive current with CMOS logic for low standby power. The enable function gates all four drivers simultaneously: when G is high AND G\u0304 is low, all outputs are active; any other enable combination forces all outputs to high-impedance. When the device is powered down (VCC = 0V), the outputs also go high-impedance, preventing loading of the bus \u2014 critical in multi-transmitter RS-422 systems where only one driver should be active at a time.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>1A<\/td>Driver 1 input<\/td><\/tr>
      2<\/td>1Y<\/td>Driver 1 non-inverting output<\/td><\/tr>
      3<\/td>1Z<\/td>Driver 1 inverting output<\/td><\/tr>
      4<\/td>G<\/td>Active-high enable (common to all 4 drivers)<\/td><\/tr>
      5<\/td>2Z<\/td>Driver 2 inverting output<\/td><\/tr>
      6<\/td>2Y<\/td>Driver 2 non-inverting output<\/td><\/tr>
      7<\/td>2A<\/td>Driver 2 input<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td><\/tr>
      9<\/td>3A<\/td>Driver 3 input<\/td><\/tr>
      10<\/td>3Y<\/td>Driver 3 non-inverting output<\/td><\/tr>
      11<\/td>3Z<\/td>Driver 3 inverting output<\/td><\/tr>
      12<\/td>G\u0304<\/td>Active-low enable (common to all 4 drivers)<\/td><\/tr>
      13<\/td>4Z<\/td>Driver 4 inverting output<\/td><\/tr>
      14<\/td>4Y<\/td>Driver 4 non-inverting output<\/td><\/tr>
      15<\/td>4A<\/td>Driver 4 input<\/td><\/tr>
      16<\/td>VCC<\/td>+5V supply<\/td><\/tr><\/table>","application_scenarios":"
      • Military Data Link:<\/b> Transmit digital data over 1000+ meters of twisted-pair cable in military vehicles and shelters. The -55\u00b0C to +125\u00b0C temperature range handles unheated vehicle compartments and desert environments. The ceramic CDIP package withstands mechanical shock and vibration. Pair with the AM26C32MJR receiver for a complete military-spec RS-422 link.<\/li>
      • Motor Encoder Interface:<\/b> Drive quadrature encoder signals from a motor controller to a drive unit over 50-100m cables. The 10Mbps data rate supports high-resolution encoders at high RPM. The complementary outputs reject common-mode noise picked up on the cable. The 0.5ns pulse skew preserves encoder signal integrity.<\/li>
      • Industrial Modbus Network:<\/b> Use as the transmitter in an RS-422 Modbus RTU network. The 3-state outputs allow multiple drivers to share the bus using the enable pins for direction control. The high-impedance power-down state ensures that a failed transmitter does not block bus communication.<\/li><\/ul>","alternative_models":"
        Model<\/th>Temp Range<\/th>Package<\/th>Key Difference<\/th><\/tr>
        AM26C31IDR<\/td>-40~85\u00b0C<\/td>SOIC-16<\/td>Industrial grade, surface mount<\/td><\/tr>
        AM26LS31MJ<\/td>-55~125\u00b0C<\/td>CDIP-16<\/td>Bipolar predecessor, higher power<\/td><\/tr>
        DS26C31TM<\/td>-55~125\u00b0C<\/td>SOIC-16<\/td>NatSemi\/TI alternative, military<\/td><\/tr>
        MC3487<\/td>0~70\u00b0C<\/td>DIP-16<\/td>NXP\/ON Semi, commercial grade<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6452"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6452\/revisions"}],"predecessor-version":[{"id":8649,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6452\/revisions\/8649"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6452"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}