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M74HC237M1R Datasheet(PDF) 5 Page - STMicroelectronics |
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M74HC237M1R Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 11 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 95 115 ns 4.5 8 151922 6.0 7 131619 tPLH tPHL Propagation Delay Time (A, B, C - Y) 2.0 60 180 225 270 ns 4.5 19 36 45 54 6.0 16 31 38 46 tPLH tPHL Propagation Delay Time (G1 - Y) 2.0 45 140 175 210 ns 4.5 15 28 35 42 6.0 13 24 30 36 tPLH tPHL Propagation Delay Time (G2 - Y) 2.0 45 140 175 210 ns 4.5 15 28 35 42 6.0 13 24 30 36 tPLH tPHL Propagation Delay Time (GL - Y) 2.0 65 190 240 285 ns 4.5 21 38 48 57 6.0 18 32 41 48 tW(L) Minimum Pulse Width (GL) 2.0 10 75 95 110 ns 4.5 6 151922 6.0 6 131619 ts Minimum Set-up Time (A, B, C - GL) 2.0 12 50 65 75 ns 4.5 3 101315 6.0 2 9 11 13 th Minimum Hold Time (A, B, C - GL) 2.0 25 30 40 ns 4.5 5 6 8 6.0 5 5 7 CIN Input Capacitance 5 10 10 10 pF CPD (*) Power Dissipation Capacitance 52 pF (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. SWITCHING CHARACTERISTICS TEST WAVEFORM M54/M74HC237 5/11 |
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