======================================================================== 74F32 QUAD 2-INPUT OR GATE ======================================================================== Family: Fairchild FAST (Advanced Schottky TTL) Source: 1980 Fairchild FAST Data Book, page 4-10 Status: Released data sheet Ratings: Vcc = +5.0 V +/-5%, TA = 0 to +70 deg C DESCRIPTION ----------- The 74F32 contains four independent 2-input OR gates in a 14-pin package. Logic function (each gate): Z = A + B CONNECTION DIAGRAM (14-pin DIP) ------------------------------- Pin Function Pin Function --- ------------------- --- ------------------- 1 A1 gate 1 input 14 Vcc 2 B1 gate 1 input 13 B4 gate 4 input 3 Z1 gate 1 output 12 A4 gate 4 input 4 A2 gate 2 input 11 Z4 gate 4 output 5 B2 gate 2 input 10 B3 gate 3 input 6 Z2 gate 2 output 9 A3 gate 3 input 7 GND 8 Z3 gate 3 output TRUTH TABLE (each gate) ----------------------- A B Z --- --- --- L L L L H H H L H H H H 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 8.3 mA VIN = Open, Vcc = Max ICCL Power Supply Current 15.5 mA VIN = Gnd, Vcc = Max AC CHARACTERISTICS ------------------ Symbol Parameter CL Min Typ Max Units ------ --------------- ----- --- --- --- ----- tPLH Propagation Dly 15 pF 2.5 3.9 5.5 ns tPLH Propagation Dly 50 pF 3.0 -- 7.0 ns tPHL Propagation Dly 15 pF 2.5 3.5 5.0 ns tPHL Propagation Dly 50 pF 3.0 -- 6.0 ns