74F642

INTEGRATED CIRCUITS 74F641/74F642* Transceivers * Discontinued part. Please see the Discontinued Product List. Product specification Supersedes data of 1989 Nov 27 IC15 Data Handbook 1999 Jan 08 Philips Semiconductors Philips Semiconductors Product specification Transceivers 74F641/74F642* 74F641 Octal Bus Transceiver with Common Output Enable, Non-Inverting (Open Collector) 74F642 Octal Bus Transceiver with Common Output Enable, Inverting (Open Collector) FEATURES High-impedance NPN base inputs for reduced loading (20µA in High and Low states) ORDERING INFORMATION DESCRIPTION 20-pin plastic DIP 20-pin plastic SOL COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F641N N74F641D PKG DWG # SOT146-1 SOT163-1 Octal bidirectional bus interface Common Output Enable for both Transmit and Receive modes Open collector outputs sink 64mA —74F641, non-inverting —74F642, inverting TYPE 74F641 74F642 TYPICAL PROPAGATION DELAY 8.0ns 8.5ns TYPICAL SUPPLY CURRENT (TOTAL) 69mA 52mA INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0 - A7, B0 - B7 T/R OE A0 - A7 B0 - B7 Data inputs Transmit/Receive input Output Enable inputs Data outputs Data outputs DESCRIPTION 74F(U.L.) HIGH/LOW 1.0/0.033 2.0/0.067 2.0/0.067 OC/40 OC/106.7 LOAD VALUE HIGH/LOW 20µA/20µA 40µA/40µA 40µA/40µA OC/24mA OC/64mA NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. OC = Open Collector. PIN CONFIGURATION – 74F641 T/R 1 A0 A1 A2 A3 A4 A5 A6 A7 2...