74F1245 Datasheet | NXP Semiconductors

FEATURES - Same function and pinout as 74F245 - High impedance NPN base inputs for reduced loading (70µA in Low and High states) DESCRIPTION The 74F1245 is an octal transceiver featuring non-inverting 3-State bus patible outputs in both transmit and receive directions. The B port outputs are capable of sinking 64m A and sourcing up to 15m A, producing very good capacitive drive characteristics. The device features an Output Enable (OE) input for easy cascading and Transmit/Receive (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. - Useful in applications where light loading bus loading or direct interface with output of a MOS microprocessor is desired - Octal bidirectional bus interface - Glitch free during 3-State power up and power down - 3-State buffer outputs sink 64m A and source 15m A TYPE 74F1245 TYPICAL PROPAGATION DELAY 5.0ns TYPICAL SUPPLY CURRENT (TOTAL) 115m A ORDERING INFORMATION DESCRIPTION 20-Pin Plastic DIP 20-Pin Plastic SOL MERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F1245N N74F1245D DRAWING NUMBER SOT146-1 SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0- A7, B0- B7 OE T/R A0- A7 B0- B7 DESCRIPTION A and B port inputs Output Enable input (active Low) Transmit/Receive input A port outputs B port outputs 74F (U.L.) HIGH/LOW 3.5/0.117 2.0/0.033 2.0/0.033 150/40 750/106.7 LOAD VALUE HIGH/LOW 70µA/70µA 40µA/20µA 40µA/20µA 3.0m A/24m A 15m A/64m A NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6m A in the Low state. PIN CONFIGURATION T/R 1 A0 A1 A2 A3 A4 A5 A6 A7 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 LOGIC SYMBOL 2 3 4 5 6 7 8 9 A0 19 1 OE T/R B0 A1 A2 A3 A4 A5 A6 A7 B1 B2 B3 B4 B5 B6 B7 GND 10 18 VCC = Pin 20 GND = Pin...