{"product_id":"lot-of-10-national-semiconductor-dm74ls85n-4-bit-magnitude-comparator-1979-nos","title":"Lot of 10 National Semiconductor DM74LS85N 4-Bit Magnitude Comparator 1979 NOS","description":"ITEM SPECIFICS\u003cbr\u003eBrand: National Semiconductor\u003cbr\u003eModel: DM74LS85N\u003cbr\u003eMPN: DM74LS85N\u003cbr\u003eType: 4-Bit Magnitude Comparator\u003cbr\u003eLogic Family: 74LS (Low-Power Schottky TTL)\u003cbr\u003eOutputs: A\u0026gt;B, A\u0026lt;B, A=B\u003cbr\u003eSupply Voltage: 4.75V to 5.25V (5V nominal)\u003cbr\u003eSupply Current: 10mA typical, 20mA maximum\u003cbr\u003ePropagation Delay: 24ns typical (4-bit words)\u003cbr\u003eOperating Temperature: 0°C to +70°C\u003cbr\u003ePackage: 16-Pin Plastic DIP\u003cbr\u003ePinout: Pin 16 VCC, Pin 8 GND\u003cbr\u003eMounting: Through-Hole\u003cbr\u003eDate Code: 7931\u003cbr\u003eCondition: New\u003cbr\u003eQuantity: 10\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eLot of 10 new old stock National Semiconductor DM74LS85N 4-bit magnitude comparators in 16-pin plastic DIPs. Each is marked with the National Semiconductor logo, \"7931,\" and \"DM74LS85N.\" Date code 7931 places manufacture in week 31 of 1979. Never installed, with clean, unsoldered leads. Light surface marks on the packages, as pictured.\u003cbr\u003eThe 74LS85 compares two 4-bit binary or BCD words and outputs A greater than B, A less than B, or A equal to B. Cascading inputs let several chips compare longer words without external gates. With ten pieces you can build up to a 40-bit comparator, or keep spares for repair work.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003eCompares two 4-bit binary or BCD words\u003cbr\u003eThree outputs: A\u0026gt;B, A\u0026lt;B, A=B\u003cbr\u003eCascading inputs, expandable to any word length\u003cbr\u003eLow-power Schottky TTL (74LS)\u003cbr\u003e5V supply\u003cbr\u003e24ns typical propagation delay\u003cbr\u003e16-pin through-hole DIP\u003cbr\u003eOriginal National Semiconductor manufacture, 1979\u003cbr\u003e10 pieces\u003cbr\u003e\u003cbr\u003eCompatibility:\u003cbr\u003eDirect replacement for the 74LS85 in any manufacturer's version, including SN74LS85N (Texas Instruments), 74LS85PC (Fairchild), 74LS85N (Signetics) and onsemi DM74LS85N. Pin-compatible with the 7485 and 74HCT85 in most 5V TTL circuits. Check timing and drive requirements before substituting a different logic family.\u003cbr\u003e\u003cbr\u003eQ\u0026amp;A\u003cbr\u003eQ: What does the 74LS85 do?\u003cbr\u003eA: It compares two 4-bit numbers (A and B) and signals whether A is greater than, less than, or equal to B.\u003cbr\u003eQ: What is the 74LS85 pinout for power?\u003cbr\u003eA: VCC is pin 16 and ground is pin 8.\u003cbr\u003eQ: How do I compare numbers longer than 4 bits?\u003cbr\u003eA: Cascade the chips. Connect the A\u0026gt;B, A\u0026lt;B and A=B outputs of the lower-order chip to the cascading inputs of the next chip.\u003cbr\u003eQ: How old are these parts?\u003cbr\u003eA: Date code 7931, which places manufacture in 1979.\u003cbr\u003eQ: How many are included?\u003cbr\u003eA: Ten.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003eItems are new old stock, sold as pictured. Ships fast with tracking. 30-day returns accepted; buyer pays return shipping.\u003cbr\u003e\u003cbr\u003eLEGAL DISCLAIMER\u003cbr\u003eWe are not an authorized distributor, reseller, or representative of National Semiconductor or its successors. All product names, trademarks, brands, and logos are the property of their respective owners. Products are sourced from surplus inventory and are not covered by manufacturer warranties.\u003cbr\u003e\u003cbr\u003eDM74LS85N, DM74LS85, 74LS85, 74LS85N, National Semiconductor DM74LS85N, NS 74LS85, SN74LS85N, 74LS85PC, 7485, 74LS85 comparator, 74LS85 IC, TTL 74LS85, 74LS85 pinout, 74LS85 pin diagram, 74LS85 truth table, 74LS85 datasheet, 4-bit magnitude comparator, 4 bit comparator IC, magnitude comparator chip, binary comparator, BCD comparator, 74LS TTL logic, 16 pin DIP IC, 74LS85 lot of 10, vintage National Semiconductor, 1979 IC, NOS logic IC, vintage computer repair IC, arcade board repair IC, digital logic chip replacement, retro electronics project\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"National Semiconductor","offers":[{"title":"Default Title","offer_id":49845126496411,"sku":"NS-DM74LS85N-N-2","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/national-semiconductor-dm74ls85n-74ls85-magnitude-comparator-dip-16-lot-of-10-1-american-industrial-parts-group.png?v=1792281917","url":"https:\/\/americanindustrialpartsgroup.com\/products\/lot-of-10-national-semiconductor-dm74ls85n-4-bit-magnitude-comparator-1979-nos","provider":"American Industrial Parts Group","version":"1.0","type":"link"}