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74HC4040 数据表(PDF) 16 Page - NXP Semiconductors |
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74HC4040 数据表(HTML) 16 Page - NXP Semiconductors |
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16 / 24 page ![]() 74HC_HCT4040_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 14 September 2005 16 of 24 Philips Semiconductors 74HC4040; 74HCT4040 12-stage binary ripple counter Definitions for test circuit: CL = load capacitance including jig and probe capacitance (See Section 12 for the value). RT = termination resistance should be equal to output impedance ZO of the pulse generator. Fig 9. Test circuit mna101 VCC VI VO RT CL PULSE GENERATOR DUT |
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