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M74HC423B1R 数据表(PDF) 7 Page - STMicroelectronics |
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M74HC423B1R 数据表(HTML) 7 Page - STMicroelectronics |
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 ns 4.5 8 15 19 6.0 7 13 16 tPLH tPHL Propagation Delay Time (A, B - Q, Q) 2.0 102 210 265 ns 4.5 29 42 53 6.0 22 36 45 tPLH tPHL Propagation Delay Time (CLR - Q, Q) 2.0 68 160 200 ns 4.5 20 32 40 6.0 16 27 34 tWOUT Output Pulse Width (for HC423) 2.0 CX = 100 pF RX =10 K Ω 1.3 µs 4.5 1.1 6.0 1 2.0 CX = 0.1 µF RX = 100 K Ω 4.8 ms 4.5 4.6 6.0 4.5 tWOUT Output Pulse Width (for HC423A) 2.0 CX = 100 pF RX =10 K Ω 1.7 µs 4.5 1.4 6.0 1.3 2.0 CX = 0.1 µF RX = 100 K Ω 10 ms 4.5 9.5 6.0 9.5 ∆tWOUT Output Pulse Width Error Between Circuits in Same Package ±1 % tW(H) tW(L) Minimum Pulse Width 2.0 75 95 ns 4.5 15 19 6.0 13 16 tW(L) Minimum Pulse Width 2.0 75 95 ns 4.5 15 19 6.0 13 16 trr Minimum Retrigger Time 2.0 CX = 100 pF RX =1 K Ω 325 ns 4.5 108 6.0 78 2.0 CX = 0.1 µF RX = 100 K Ω 5 µs 4.5 1.4 6.0 1.2 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 160 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/M74HC423/423A 7/14 |
类似零件编号 - M74HC423B1R |
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类似说明 - M74HC423B1R |
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