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74LCX646 bảng dữ liệu(PDF) 7 Page - STMicroelectronics |
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74LCX646 bảng dữ liệu(HTML) 7 Page - STMicroelectronics |
7 / 16 page M74LCX646 7/16 Table 8: AC Electrical Characteristics 1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch- ing in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|) 2) Parameter guaranteed by design Table 9: Capacitive Characteristics 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/8 (per circuit) Symbol Parameter Test Condition Value Unit VCC (V) CL (pF) RL ( Ω) ts = tr (ns) -40 to 85 °C -55 to 125 °C Min. Max. Min. Max. tPLH tPHL Propagation Delay Time (CAB or CBA to An or Bn) 2.7 50 500 2.5 1.5 9.5 1.5 9.5 ns 3.0 to 3.6 1.5 8.5 1.5 8.5 tPLH tPHL Propagation Delay Time (An to Bn or Bn to An) 2.7 50 500 2.5 1.5 8.0 1.5 8.0 ns 3.0 to 3.6 1.5 7.0 1.5 7.0 tPLH tPHL Propagation Delay Time (SAB or SBA to An or Bn) 2.7 50 500 2.5 1.5 9.5 1.5 9.5 ns 3.0 to 3.6 1.5 8.5 1.5 8.5 tPZL tPZH Output Enable Time (G, DIR to An, Bn) 2.7 50 500 2.5 1.5 9.5 1.5 9.5 ns 3.0 to 3.6 1.5 8.5 1.5 8.5 tPLZ tPHZ Output Disable Time (G, DIR to An, Bn) 2.7 50 500 2.5 1.5 9.5 1.5 9.5 ns 3.0 to 3.6 1.5 8.5 1.5 8.5 tS Setup Time, HIGH or LOW level Data to CAB, CBA 2.7 50 500 2.5 2.5 2.5 ns 3.0 to 3.6 2.5 2.5 th Hold Time, HIGH or LOW level Data to CAB, CBA 2.7 50 500 2.5 1.5 1.5 ns 3.0 to 3.6 1.5 1.5 tW CAB, CBA Pulse Width, HIGH or LOW 2.7 50 500 2.5 4.0 4.0 ns 3.0 to 3.6 3.3 3.3 fMAX Clock Pulse Frequency 3.0 to 3.6 50 500 2.5 150 150 MHz tOSLH tOSHL Output To Output Skew Time (note1, 2) 3.0 to 3.6 50 500 2.5 1.0 1.0 ns Symbol Parameter Test Condition Value Unit VCC (V) TA = 25 °C Min. Typ. Max. CIN Input Capacitance 3.3 VIN = 0 to VCC 6pF CI/O I/O Capacitance 3.3 VIN = 0 to VCC 10 pF CPD Power Dissipation Capacitance (note 1) 3.3 fIN = 10MHz VIN = 0 or VCC 37 pF |
Số phần tương tự - 74LCX646 |
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Mô tả tương tự - 74LCX646 |
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