{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AM686HC","brand":"AMD (Xilinx)","brandSlug":"amd-xilinx","productSlug":"AM686HC","canonicalUrl":"https://icboms.com/amd-xilinx/AM686HC","factsUrl":"https://icboms.com/api/mcp/products/AM686HC","rawCanonicalId":null},"summary":{"shortDescription":"AMD AM686HC General Purpose single comparator, TTL output, 15ns propagation delay, 80dB CMRR, 60dB PSRR, through-hole TO-100-10 metal can package, 0°C to 70°C operating temperature.","salesMarkdown":"## AM686HC — single comparator with TTL output in a TO-100-10 can The AM686HC is a single general-purpose comparator from AMD, delivering a TTL-compatible output with a 15 ns propagation delay. Packaged in a through-hole TO-100-10 metal can, it is built for applications that need fast threshold detection and a clean logic-level output — think line receivers, pulse-width discriminators, and zero-crossing detectors in instrumentation or control logic. The supply requirement is unusual: it needs a dual rail of -5.7 V to -6.3 V and 4.75 V to 5.25 V. That split-supply footprint is a hard constraint — do not plan for a single 5 V rail unless you generate the negative leg. Quiescent current maxes at 42 mA, and input offset voltage is specified at 10 mV at 5 V supply. Common-mode and power-supply rejection are rated at 80 dB CMRR and 60 dB PSRR respectively, giving reasonable noise immunity for a comparator of this era. The operating temperature range is 0°C to 70°C, so this part is suited for commercial indoor equipment — not extended or industrial environments. ## 15 ns propagation delay — timing margin in TTL systems The 15 ns propagation delay is the headline speed figure. For a TTL-output comparator, that puts it in the fast lane for the 1970s–80s logic era — fast enough to handle clock recovery or comparator-based timing circuits running at moderate clock rates. If your design needs sub-10 ns response, the AM685DL (6.5 ns, ECL output) is a different animal entirely, but it requires ECL termination and a wider temperature range (-30°C to 85°C). ## Package and mounting — through-hole metal can The TO-100-10 metal can is a 10-lead circular package with a hermetic seal — common in high-reliability and military-grade parts. It mounts through-hole, so plan for a corresponding PCB footprint with a 10-pin circular layout. The metal can provides good thermal dissipation and RF shielding, which is useful in noisy environments.","metaTitle":"AM686HC General Purpose Comparator, 15ns TTL, TO-100-10","metaDescription":"AM686HC single comparator with 15ns propagation delay, TTL output, 80dB CMRR. Through-hole TO-100-10 metal can. RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"General Purpose","Package":"Bulk","Output Type":"TTL","Mounting Type":"Through Hole","Package / Case":"TO-100-10 Metal Can","lifecycle_stage":"eol_hot","CMRR, PSRR (Typ)":"80dB CMRR, 60dB PSRR","Number of Elements":"1","Operating Temperature":"0°C ~ 70°C","Propagation Delay (Max)":"15ns","Supplier Device Package":"TO-100-10","Current - Quiescent (Max)":"42mA","Current - Input Bias (Max)":"13µA","Voltage - Input Offset (Max)":"10mV @ 5V","Voltage - Supply, Single/Dual (±)":"-5.7V ~ -6.3V, 4.75V ~ 5.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.4","stockQuantity":0,"priceTiers":[{"qty":21,"price":"$14.40000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04e1598a5f1016fc0b8128e1cda76dd4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is AM686HC RoHS compliant?","answer":"No, the AM686HC is listed as RoHS non-compliant. The TO-100-10 metal can package typically uses lead-based materials, so this part is not suitable for lead-free assembly without an exemption."},{"question":"What is the equivalent or cross reference for AM686HC?","answer":"The AM686/BEA is a functionally equivalent order code with identical electrical ratings (80 dB CMRR, 60 dB PSRR, 15 ns propagation delay, TTL output) and the same package. It can serve as a second-source alternate for dual-sourcing."},{"question":"Can AM686HC replace LM311 in a TTL circuit?","answer":"The AM686HC is a single comparator with TTL output and 15 ns delay, but its supply requirement is a split rail (-5.7 V to -6.3 V and 4.75 V to 5.25 V), whereas the LM311 typically runs on a single 5 V supply or ±15 V. Check your board's supply rails before substituting — the AM686HC needs that negative rail."},{"question":"What is the lead time for AM686HC?","answer":"Lead time is confirmed at quote time when you submit an RFQ. As an active part, it is generally available through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/amd-xilinx/AM686HC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/amd-xilinx/AM686HC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-12T00:17:26.012Z","lastPublished":"2026-07-12T00:17:26.012Z","indexable":true}}