74F2243

74F2243 Quad Bus Transceiver October 1988 Revised August 1999 74F2243 Quad Bus Transceiver with 25Ω Series Resistors in the Outputs General Description The 74F2243 is a quad bus transmitter/receiver which can be used for 4-line asynchronous 2-way data communications between data busses. It is designed to drive the capacitive inputs of MOS memory drivers, address drivers, clock drivers, and bus-oriented transmitters/receivers. The 25Ω series resistors in the outputs reduce ringing and eliminate the need for external resistors. Features s 25Ω series resistors in outputs eliminate the need for external resistors s 2-Way asynchronous data bus communication s 3-STATE outputs s 12 mA source current s Designed to drive the capacitive inputs of MOS devices Ordering Code: Order Number 74F2243SC 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 Inputs/Outputs E2 L H L H An Input N/A Z A=B Z = High Impedance N/A = Not Allowed Bn B=A N/A Z Input Unit Loading/Fan Out Pin Names E1 E2 An , Bn Description Enable Input (Active LOW) Enable Input (Active HIGH) Inputs Outputs U.L. HIGH/LOW 1.0/1.67 1.0/1.67 3.5/2.67 750/20 Input IIH/IIL Output IOH/IOL 20 µA/−1 mA 20 µA/−1 mA 70 µA/−1.6 mA −15 mA/12 mA ...