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M74HC221B1R Datasheet(PDF) 7 Page - STMicroelectronics |
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M74HC221B1R Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 14 page  AC ELECTRICAL CHARACTERISTICS (CL =50 pF, Input tr =tf =6 ns) Symbol Parameter Test Conditions Value Unit VCC (V) TA =25 oC 54HC and 74HC -40 to 85 oC 74HC -55 to 125 oC 54HC Min. Typ. Max. Min. Max. Min. Max. tTLH tTHL Output Transition Time 2.0 30 75 95 110 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (A, B - Q, Q) 2.0 102 210 265 315 ns 4.5 30 42 53 63 6.0 24 36 45 54 tPLH tPHL Propagation Delay Time (CLRTRIGGER- Q,Q) 2.0 102 235 295 355 ns 4.5 30 47 59 71 6.0 24 40 50 60 tPLH tPHL Propagation Delay Time (CLR - Q, Q) 2.0 67 160 200 240 ns 4.5 20 32 40 48 6.0 16 27 34 41 tWOUT Output Pulse Width (for HC221) 2.0 CX = 100 pF RX =10 K Ω 1.5 µs 4.5 1.3 6.0 1.2 2.0 CX = 0.1 µF RX = 100 K Ω 7 ms 4.5 6.9 6.0 6.9 tWOUT Output Pulse Width (for HC221A) 2.0 CX = 100 pF RX =10 K Ω 1.8 µs 4.5 1.5 6.0 1.4 2.0 CX = 0.1 µF RX = 100 K Ω 10 ms 4.5 9.7 6.0 9.6 ∆tWOUT Output Pulse Width Error Between Circuits in Same Package ±1 % tW(H) tW(L) Minimum Pulse Width 2.0 75 95 110 ns 4.5 15 19 22 6.0 13 16 20 tW(L) Minimum Pulse Width 2.0 75 95 110 ns 4.5 15 19 22 6.0 13 16 20 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 174 pF (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (RefertoTestCircuit). Average operting current canbeobtained by the following equation. ICC(opr) =CPD •VCC •fIN +ICC’ Duty/100 + IC/2(per monostable) (ICC’: Active Supply Current) (Duty:%) M54/M74HC221/221A 7/14 |
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