======================================================================== 74F02 QUAD 2-INPUT NOR GATE ======================================================================== Family: Fairchild FAST (Advanced Schottky TTL) Source: 1980 Fairchild FAST Data Book, page 4-4 Status: Released data sheet Ratings: Vcc = +5.0 V +/-5%, TA = 0 to +70 deg C DESCRIPTION ----------- The 74F02 contains four independent 2-input NOR gates in a 14-pin package. Logic function (each gate): Z = /(A + B) (output HIGH only when both inputs are LOW) CONNECTION DIAGRAM (14-pin DIP) ------------------------------- Pin Function Pin Function --- ------------------- --- ------------------- 1 Z1 gate 1 output 14 Vcc 2 A1 gate 1 input 13 Z4 gate 4 output 3 B1 gate 1 input 12 B4 gate 4 input 4 Z2 gate 2 output 11 A4 gate 4 input 5 A2 gate 2 input 10 Z3 gate 3 output 6 B2 gate 2 input 9 B3 gate 3 input 7 GND 8 A3 gate 3 input TRUTH TABLE (each gate) ----------------------- A B Z --- --- --- L L H L H L H L L H H L H = HIGH voltage level; L = LOW voltage level. INPUT LOADING / FAN-OUT ----------------------- Pin Names Description U.L. HIGH/LOW ----------- ------------- ------------- Inputs 0.5 / 0.375 Outputs 25 / 12.5 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE --------------------------------------------------- Symbol Parameter Min Typ Max Units Conditions ------ -------------------- --- --- ---- ----- --------------------- ICCH Power Supply Current 5.6 mA VIN = Gnd, Vcc = Max ICCL Power Supply Current 13 mA *, Vcc = Max * Measured with one input HIGH, one input LOW for each gate. AC CHARACTERISTICS ------------------ Symbol Parameter CL Min Typ Max Units ------ --------------- ----- --- --- --- ----- tPLH Propagation Dly 15 pF 2.0 3.5 4.8 ns tPLH Propagation Dly 50 pF 2.5 -- 7.0 ns tPHL Propagation Dly 15 pF 1.5 2.6 3.5 ns tPHL Propagation Dly 50 pF 2.0 -- 5.5 ns