SN74HCT645N
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Octal Bus Transceiver with 3-State Outputs, High-Speed CMOS with TTL inputs (HCT series), standard baseline logic layout, 20-pin Plastic DIP. 100% Exact Replacements: SN74HCT645AN, CD74HCT645E, 74HCT645N, NTE74HCT645.
SEMIASST6