74F640

INTEGRATED CIRCUITS 74F640 Octal bus transceiver, inverting (3-State) Product specification IC15 Data Handbook 1989 Nov 27 Philips Semiconductors Philips Semiconductors Product specification Octal bus transceiver, inverting (3-State) 74F640 FEATURES High-impedance NPN base inputs for reduced loading (70µA in High and Low states) bus loading PIN CONFIGURATION T/R 1 A0 A1 A2 A3 A4 A5 A6 2 3 4 5 6 7 8 9 20 VCC 19 OE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 Ideal for applications which require high-output drive and minimal 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. A7 GND 10 SF00198 TYPE 74F640 TYPICAL PROPAGATION DELAY 3.5ns TYPICAL SUPPLY CURRENT (TOTAL) 78mA ORDERING INFORMATION DESCRIPTION 20-pin plastic DIP 20-pin plastic SOL COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F640N N74F640D PKG DWG # SOT146-1 SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0 - A7, B0 - B7 OE ...