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74F243SC 데이터시트(PDF) 1 Page - Fairchild Semiconductor |
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74F243SC 데이터시트(HTML) 1 Page - Fairchild Semiconductor |
1 / 4 page © 1999 Fairchild Semiconductor Corporation DS009502 www.fairchildsemi.com 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: 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 H = HIGH Voltage Level Z = High Impedance L = LOW Voltage Level N/A = Not Allowed Unit Loading/Fan Out Order Code Package Number Package Description 74F243SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Inputs Inputs/Outputs E1 E2 An Bn L L Input B = A LH N/A N/A HL Z Z HH A = B Input Pin Description U.L. Input IIH/IIL Names HIGH/LOW Output IOH/IOL E1 Enable Input (Active LOW) 1.0/1.67 20 µA/−1 mA E2 Enable Input (Active HIGH) 1.0/1.67 20 µA/−1 mA An, Bn Inputs 3.5/2.67 70 µA/−1.6 mA Outputs 600/106.6 (80) −12 mA/64 mA (48 mA) |
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