54FCT245 Datasheet | National Semiconductor

Description The ’FCT245 contains eight non-inverting bidirectional buffers with TRI-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 48 m A on both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A ports to B ports; Receive (active LOW) enables data from B ports to A ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a High Z condition. Features n TTL input and output level patible n A and B output sink capability of 48 m A, source capability of 12 m A n CMOS power consumption n Standard Microcircuit Drawing (SMD) 5962-8762901 Ordering Code: Military 54FCT245DMQB 54FCT245FMQB 54FCT245LMQB Package Number J20A W20A E20A 20-Lead Ceramic Dual-In-Line 20-Lead Cerpak 20-Lead Ceramic Leadless Chip Carrier, Type C Package Description Logic Symbol DS100950-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100950 .national. Free Datasheet http://.. Connection Diagrams Pin Assignment for DIP and Flatpak. Pin Assignment for LCC DS100950-3 DS100950-5 Pin Descriptions Pin Names OE T/R A0- A7 B0- B7 Description Output Enable Input (Active LOW) Transmit/Receive Input Side A Inputs or TRI-STATE Outputs Side B Inputs or TRI-STATE Outputs Truth Table Inputs OE L L H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Output T/R L H X Bus B Data to Bus A Bus A Data to Bus B High Z State Logic Diagram DS100950-4 .national. Free Datasheet http://.. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input...