MC14490PG

MC14490 Hex Contact Bounce Eliminator The MC14490 is constructed with complementary MOS enhancement mode devices, and is used for the elimination of extraneous level changes that result when interfacing with mechanical contacts. The digital contact bounce eliminator circuit takes an input signal from a bouncing contact MC14490 PIN ASSIGNMENT A 1 16 V in DD B 2 15 A out out C 3 14 B in in D 4 13 C out out E 5 12 D in in F 6 11 E out out OSC 7 10 F in in V 8 9 OSC SS out BLOCK DIAGRAM +V DD DATA 15 A out 1/2-BIT A 1 4-BIT STATIC SHIFT REGISTER in DELAY SHIFT LOAD V = PIN 16 OSCILLATOR DD 1 2 OSC 7 1 in V = PIN 8 AND SS 1 2 TWO-PHASE CLOCK GENERATOR OSC 9 2 out 1 2 B 14 2 B IDENTICAL TO ABOVE STAGE in out 1 2 C 3 IDENTICAL TO ABOVE STAGE 13 C in out 1 2 D 12 IDENTICAL TO ABOVE STAGE 4 D in out 1 2 E 5 IDENTICAL TO ABOVE STAGE 11 E in out 1 2 F 10 6 F IDENTICAL TO ABOVE STAGE in out