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UT54ACS191E 数据表(PDF) 8 Page - Aeroflex Circuit Technology |
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UT54ACS191E 数据表(HTML) 8 Page - Aeroflex Circuit Technology |
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8 / 12 page ![]() 8 36-00-04-001 Ver. 1.0.0 Aeroflex Microelectronics Solutions - HiRel Notes: 1. Maximum allowable relative shift equals 50mV. 2. For devices procured with a total ionizing dose tolerance guarantee, the post-irradiation performance is guaranteed at 25°C per MIL-STD-883 method 1019 condition A up to the maximum TID level procured. 3. Maximum clock frequency fMAX is the max rate at which the device will count up or down at the given voltage. However, the user must wait the appropriate UP-to-Qn or Down-to-Qn propagation delay time in order to observe the current counter value. tPHL8 CTEN to RCO CL = 50pF 4.5V to 5.5V 2 10 ns 3.0V to 3.6V 2 12 fMAX 3 Maximum clock frequency CL = 50pF 3.0V to 5.5V 70 MHz tSU1 D/U setup time before CLK ↑ CL = 50pF 4.5V to 5.5V 8 ns 3.0V to 3.6V 10 tSU2 CTEN low setup time before CLK ↑ CL = 50pF 4.5V to 5.5V 10 ns 3.0V to 3.6V 12 tSU3 A, B, C, D setup time before LOAD ↑ CL = 50pF 4.5V to 5.5V 4 ns 3.0V to 3.6V 5 tSU4 LOAD high setup time before CLK ↑ CL = 50pF 4.5V to 5.5V 3 ns 3.0V to 3.6V 4 tH1 D/U hold time after CLK ↑ CL = 50pF 3.0V to 5.5V 0 ns tH2 CTEN low hold time after CLK ↑ CL = 50pF 4.5v to 5.5V 1 ns 3.0V to 3.6V 2 tH3 A, B, C, D hold time after LOAD ↑ CL = 50pF 3.0V to 5.5V 2 ns tW Minimum pulse width CLK high or low LOAD low CL = 50pF 3.0V to 5.5V 7 ns |
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