SL74LS245

SL74LS245 Octal 3-State Noninverting Bus Transceiver These octal bus transceiver are designed for asynchronous twoway communication between data buses. The control function implementation minimized external timing requirements. The device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the directional control (DIR) input. The enable input(E) can be used to disable the device so that the buses are effectively isolated. Bidirectional Bus Transceiver in a High-Density 20-Pin Package 3-state Outputs Dirve Bus Lines Directly P-N-P Inputs D-C Loading on Bus Lines Hysteresis at Bus Inputs Improve Noise Margins Typical Propagation Delay Times; Port to Port ... 8 ns ORDERING INFORMATION SL74LS245N Plastic SL74LS245D SOIC TA = 0° to 70° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Control Inputs Output Enable L PIN 20=VCC PIN 10 = GND Direction L Operation Data Transmitted from Bus B to Bus A Data Transmitted from Bus A to Bus B Buses Isolated (High Impedance State) L H H X X = don’t care SLS System Logic Semiconductor SL74LS245 MAXIMUM RATINGS * Symbol VCC VIN VOUT Tstg * Parameter Supply Voltage Input Voltage Output Voltage Storage Temperature Range Value 7.0 7.0 5.5 -65 to +150 Unit V V V °C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. RECOMMENDED OPERATI...