SL74LS244

SL74LS244 Octal 3-State Noninverting Buffer/Line Driver/Line Receiver These octal buffers and line drivers and designed specifically to improve both the performance and density of three-state memory address drivers, clock drivers, and busoriented receivers and transmitters. This devise features high fan-out, improved fan-in, and 400 mV noise margin. It can be used to drive terminated lines down to 133 ohms. 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers P-N-P Inputs Reduce D-C Loading Hysteresis at Inputs Improves Noise Margins ORDERING INFORMATION SL74LS244N Plastic SL74LS244D SOIC TA = 0° to 70° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs PIN 20=VCC PIN 10 = GND Enable A, Enable B L L H X=don’t care Z = high impedance A,B L H X Outputs YA,YB L H Z SLS System Logic Semiconductor SL74LS244 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 OPERATING CONDITIONS Symbol VCC VIH VIL IOH IOL TA Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Ambient Temperature Range 0 Parameter Min 4.75 2.0 0.8 -15 24 +70 Max 5.25 Unit V V V mA mA °C DC ELECTRICAL CHARACTERISTICS o...