SL74LS244 Datasheet | System Logic Semiconductor

features high fan-out, improved fan-in, and 400 m V 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 System Logic Semiconductor 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 Remended Operating Conditions. REMENDED 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 m A m A °C DC ELECTRICAL CHARACTERISTICS over full operating conditions Guaranteed Limit Symbol VIK VOH Parameter Input Clamp Voltage High Level Output Voltage Test Conditions VCC = min, IIN = -18 m A VCC = min, IOH = -1.0 m A VCC = min, IOH = -3.0 m A VCC = min, IOH = -15 m A VOL Low Level Output Voltage VCC = min, IOL = 12 m A VCC = min, IOL = 24 m A VT+ - VTIOZH IOZL IIH Hysteresis Output Off Current HIGH Output Off Current LOW High Level Input Current VCC = min VCC = max, VOUT = 2.7 V VCC = max, VOUT = 0.4 V VCC = max, VIN = 2.7 V VCC = max, VIN = 7.0 V IIL IO ICC Low Level Input Current Output Short Circuit Current Supply Current Outputs High Outputs Low All outputs disabled VCC = max, VIN = 0.4 V VCC = max, VO =0 V (Note 1) VCC = max Outputs open -40 0.2 20 -20 20 0.1 -0.2 -225 27 46 54 2.7 2.4 2.0 0.4 0.5 V µA µA µA m A m A...