74F243

74F243 Quad Bus Transceiver with 3-STATE Outputs April 1988 Revised July 1999 74F243 Quad Bus Transceiver with 3-STATE Outputs General Description The 74F243 is a quad bus transmitter/receiver designed for 4-line asynchronous 2-way data communications between data busses. Features s 2-Way asynchronous data bus communication s Input clamp diodes limit high-speed termination effects Ordering Code: Order Code 74F243SC Package Number M14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol IEEE/IEC Connection Diagram Truth Table Inputs E1 L L H H H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance N/A = Not Allowed Inputs/Outputs E2 L H L H An Input N/A Z A=B Bn B=A N/A Z Input Unit Loading/Fan Out Pin Description Names E1 E2 An, Bn Enable Input (Active LOW) Enable Input (Active HIGH) Inputs Outputs 1.0/1.67 1.0/1.67 3.5/2.67 U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL 20 µA/−1 mA 20 µA/−1 mA 70 µA/−1.6 mA 600/106.6 −12 mA/64 mA (80) (48 mA) © 1999 Fairchild Semiconductor Corporation DS009502 www.fairchildsemi.com 74F243 Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Out...