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74HC393N 数据表(PDF) 10 Page - NXP Semiconductors |
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74HC393N 数据表(HTML) 10 Page - NXP Semiconductors |
10 / 21 page 74HC_HCT393 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved. Product data sheet Rev. 4 — 16 May 2013 10 of 21 NXP Semiconductors 74HC393; 74HCT393 Dual 4-bit binary ripple counter [1] tpd is the same as tPLH and tPHL. [2] tt is the same as tTHL and tTLH. [3] CPD is used to determine the dynamic power dissipation (PD in W). PD =CPD VCC2 fi N+ (CL VCC2 fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; (C L VCC 2 f o) = sum of outputs. 10.1 Waveforms CPD power dissipation capacitance CL =50pF;f=1 MHz; VI =GND to VCC [3] -25 - - - - - pF Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 11. Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit Min Typ Max Min Max Min Max Measurement points are given in Table 8. Fig 9. Propagation delays clock (nCP) to output (nQx), the output transition times and the maximum clock frequency 001aad537 VM VM tPLH tTLH tTHL tPHL input nCP VI GND VOH VOL 1/fmax output nQx Table 8. Measurement points Type Input Output VM VM 74HC393 0.5VCC 0.5VCC 74HCT393 1.3 V 1.3 V |
类似零件编号 - 74HC393N |
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