{"product_id":"toshiba-tmm416d-4-4116-4-16kx1-250ns-ceramic-dip-16-dram-nos","title":"Toshiba TMM416D-4 4116-4 16Kx1 250ns DRAM Ceramic DIP-16 NOS Vintage IC","description":"ITEM SPECIFICS\u003cbr\u003eBrand: Toshiba\u003cbr\u003eModel: TMM416D-4\u003cbr\u003eMPN: TMM416D-4\u003cbr\u003eAlternate Marking: 4116-4\u003cbr\u003eType: Dynamic RAM Integrated Circuit\u003cbr\u003eMemory Type: Page-Mode DRAM\u003cbr\u003eMemory Organization: 16K x 1 Bit\u003cbr\u003eMemory Density: 16 Kbit\u003cbr\u003eAccess Time: 250 ns\u003cbr\u003eTechnology: MOS\u003cbr\u003eOutput Type: Three-State\u003cbr\u003eRefresh Cycles: 128\u003cbr\u003ePackage Type: Ceramic DIP \/ CDIP\u003cbr\u003eNumber of Pins: 16\u003cbr\u003eMounting Style: Through-Hole\u003cbr\u003eTerminal Pitch: 2.54 mm\u003cbr\u003eOperating Temperature Range: 0°C to 70°C\u003cbr\u003eTemperature Grade: Commercial\u003cbr\u003eCountry\/Region of Manufacture: Japan\u003cbr\u003eProduct Status: Discontinued\u003cbr\u003eCondition: New Old Stock\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eToshiba TMM416D-4, also marked 4116-4, discontinued 16K × 1-bit dynamic RAM integrated circuit. This vintage memory IC provides page-mode operation and a maximum access time of 250 ns.\u003cbr\u003eThe component uses a 16-pin ceramic dual-inline through-hole package. It is intended for legacy electronic equipment, vintage computer restoration, circuit-board repair, and applications requiring the exact TMM416D-4 part number and speed grade.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003eToshiba TMM416D-4\u003cbr\u003eAlternate 4116-4 Marking\u003cbr\u003e16,384 x 1-Bit Organization\u003cbr\u003e16 Kbit Memory Capacity\u003cbr\u003e250 ns Maximum Access Time\u003cbr\u003ePage-Mode DRAM\u003cbr\u003eMOS Technology\u003cbr\u003eThree-State Output\u003cbr\u003e128 Refresh Cycles\u003cbr\u003e16-Pin Ceramic DIP Package\u003cbr\u003eThrough-Hole Mounting\u003cbr\u003eCommercial Temperature Grade\u003cbr\u003eDiscontinued Vintage Memory IC\u003cbr\u003eMade in Japan\u003cbr\u003e\u003cbr\u003eThis component is new old stock and may show cosmetic marks, terminal discoloration, or other evidence of long-term storage and handling. Functional testing has not been represented. Please review all photographs for the exact condition, markings, and item included.\u003cbr\u003eConfirm the exact part number, speed grade, pin configuration, timing, refresh requirements, and electrical requirements of the original equipment before installation.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003eThis item is new old stock and has been stored for an extended period. It may show cosmetic marks, terminal discoloration, or other evidence of storage and handling. Functional testing has not been represented. Please review all photos for the exact condition and markings. 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 Toshiba. All product names, trademarks, brands, and logos are the property of their respective owners. This discontinued component was sourced from existing inventory and is not covered by the original manufacturer’s warranty.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCOMPATIBILITY \u0026amp; CROSS-REFERENCE\u003c\/strong\u003e\u003cbr\u003eToshiba's MOS Memory data book lists the TMM416 as an alternate source for the Mostek MK4116 — the industry-standard 4116 16K x 1 dynamic RAM. The D denotes the ceramic (Cerdip) package and the -4 suffix the 250 ns speed grade; this unit carries the alternate 4116-4 marking. Other published 4116-family cross-references include the TMS4116 (Texas Instruments), MCM4116 (Motorola), μPD416 (NEC), AM9016 (AMD), and MB8116 (Fujitsu). The TMM416 requires +12V, +5V, and −5V supplies — always confirm speed grade, supply voltages, and timing against your equipment before substituting.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eQ\u0026amp;A\u003c\/strong\u003e\u003cbr\u003eQ: What is the Toshiba TMM416D-4? A: A 16,384 x 1-bit NMOS dynamic RAM with a 250 ns maximum access time in a 16-pin ceramic DIP.\u003cbr\u003eQ: Is the TMM416D-4 a 4116 equivalent? A: Yes — Toshiba lists the TMM416 as an alternate source for the Mostek MK4116, and this unit is marked 4116-4 (250 ns grade).\u003cbr\u003eQ: What supply voltages does it require? A: +12V, +5V, and −5V, like other 4116-family 16K DRAMs.\u003cbr\u003e\u003cbr\u003eToshiba TMM416D-4 TMM416D4 4116-4 4116D 4116J Toshiba Memory IC 16Kx1 DRAM 16K DRAM 16384x1 Memory 250ns DRAM Page Mode DRAM MOS RAM Ceramic DIP CDIP16 DIP-16 16 Pin IC Through Hole Memory Chip Discontinued IC Obsolete Semiconductor New Old Stock NOS Vintage Electronics Vintage Computer Parts Retro Computer RAM Legacy Memory Integrated Circuit Circuit Board Repair Computer Restoration Electronic Components Replacement DRAM Japan Semiconductor\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"Toshiba","offers":[{"title":"Default Title","offer_id":49598943297691,"sku":"TOS-TMM416D-4-N","price":6.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/toshiba-tmm416d-4-vintage-dram-ic-1-american-industrial-parts-group.png?v=1790019954","url":"https:\/\/americanindustrialpartsgroup.com\/products\/toshiba-tmm416d-4-4116-4-16kx1-250ns-ceramic-dip-16-dram-nos","provider":"American Industrial Parts Group","version":"1.0","type":"link"}