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74F640 (DIP) ÃÖ¼ÒÁÖ¹®¼ö·® : 10°³ |
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Octal bus transceiver, inverting (3-State) 74F640
FEATURES • High-impedance NPN base inputs for reduced loading (70mA in High and Low states) • Ideal for applications which require high-output drive and minimal bus loading • Inverting version of 74F245 • Octal bidirectional bus interface • 3-State outputs sink 64mA and source 15mA
DESCRIPTION The 74F640 is an octal transceiver featuring inverting 3-State bus compatible outputs in both transmit and receive directions. The B port outputs are capable of sinking 64mA and sourcing 15mA, providing very good capacitive drive characteristics. The device features an Output Enable (OE) input for easy cascading and Transmit/Receiver (T/R) input for direction control. The 3-State outputs, B0–B7, have been designed to prevent output bus loading if the power is removed from the device.
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