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10 / 23 page September 1993 10 Philips Semiconductors Product specification Programmable delay timer with oscillator 74HC/HCT5555 AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF. SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITION +25 −40 to +85 −40 to +125 VCC (V) WAVEFORMS MIN TYP MAX MIN MAX MIN MAX tPLH/tPHL propagation delay A, B to Q, Q − − − 77 28 22 240 48 41 − − − 300 60 51 − − − 360 72 61 ns ns ns 2.0 4.5 6.0 Fig.6 tPLH/tPHL propagation delay MR to Q, Q − − − 61 22 18 185 37 31 − − − 230 46 39 − − − 280 56 48 ns ns ns 2.0 4.5 6.0 Fig.7 tPLH/tPHL propagation delay RS to Q, Q − − − 83 30 24 250 50 43 − − − 315 63 54 − − − 375 75 64 ns ns ns 2.0 4.5 6.0 Fig.8; note 1 tTHL/tTLH output transition time − − − 19 7 6 75 15 13 − − − 95 19 16 − − − 110 22 19 ns ns ns 2.0 4.5 6.0 Fig.6 tW trigger pulse width A = HIGH B = LOW 70 14 12 17 6 5 − − − 90 18 15 − − − 105 21 18 − − − ns ns ns 2.0 4.5 6.0 Fig.6 tW master reset pulse width HIGH 70 14 12 19 7 6 − − − 90 18 15 − 105 21 18 − − − ns ns ns 2.0 4.5 6.0 Fig.7 tW clock pulse width RS; HIGH or LOW 80 16 14 25 9 7 − − − 100 20 17 − − − 120 24 20 − − − ns ns ns 2.0 4.5 6.0 Fig.8 tW minimum output pulse width Q = HIGH, Q = LOW − − − 275 100 80 − − − − − − − − − − − − − − − ns ns ns 2.0 4.5 6.0 Fig.6; note 1 trt retrigger time A, B − − − 0 0 0 − − − − − − − − − − − − − − − ns ns ns 2.0 4.5 6.0 Fig.10; note 2 REXT external timing resistor 5 1 − − 1000 1000 − − − − − − − − − − k Ω k Ω 2.0 5.0 Fig.13 CEXT external timing capacitor 50 50 no limits pF pF 2.0 5.0 Fig.13 trem removal time MR to A, B 120 24 20 39 14 11 − − − 150 30 26 − − − 180 36 31 − − − ns ns ns 2.0 4.5 6.0 Fig.7 |
Số phần tương tự - 74HCT5555N |
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Mô tả tương tự - 74HCT5555N |
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