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74VHCT14ATTR Datasheet(PDF) 7 Page - STMicroelectronics |
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74VHCT14ATTR Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 15 page 74VHCT14A Electrical characteristics 7/15 Table 7. AC electrical characteristics (Input tr = tf = 3ns) Symbol Parameter Test condition Value Unit VCC (1)(V) CL (pF) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. tPLH tPHL Propagation delay time 5.0 15 5.5 7.6 1.0 8.5 1.0 9.5 ns 5.0 50 6.7 8.0 1.0 9.5 1.0 10.5 1. Voltage range is 5.0V ± 0.5V Table 8. Capacitive characteristics Symbol Parameter Test condition Value Unit TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. CIN Input capacitance 6 10 10 10 pF CPD Power dissipation capacitance (1) 20 pF 1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/6 (per gate) Table 9. Dynamic switching characteristics Symbol Parameter Test condition Value Unit VCC (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. VOLP Dynamic low voltage quiet output (1) (2) 5.0 CL = 50 pF 0.3 0.8 V VOLV -0.8 -0.3 VIHD Dynamic high voltage input (1) (3) 5.0 2.0 V VILD Dynamic low voltage input (1) (3) 5.0 0.6 V 1. Worst case package. 2. Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND. 3. Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f = 1MHz. |
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