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74HC273DB 数据表(PDF) 4 Page - NXP Semiconductors |
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74HC273DB 数据表(HTML) 4 Page - NXP Semiconductors |
4 / 21 page 74HC_HCT273 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved. Product data sheet Rev. 4 — 10 June 2013 4 of 21 NXP Semiconductors 74HC273; 74HCT273 Octal D-type flip-flop with reset; positive-edge trigger 5. Pinning information 5.1 Pinning 5.2 Pin description (1) This is not a supply pin. The substrate is attached to this pad using conductive die attach material. There is no electrical or mechanical requirement to solder this pad. However, if it is soldered, the solder land should remain floating or be connected to GND. Fig 5. Pin configuration DIP20, SO20, SSOP20 and TSSOP20 Fig 6. Pin configuration DHVQFN20 74HC273 74HCT273 MR VCC Q0 Q7 D0 D7 D1 D6 Q1 Q6 Q2 Q5 D2 D5 D3 D4 Q3 Q4 GND CP 001aae053 1 2 3 4 5 6 7 8 9 10 12 11 14 13 16 15 18 17 20 19 001aae054 74HC273 74HCT273 Transparent top view Q4 D3 Q3 D4 D2 D5 Q2 Q5 Q1 Q6 D1 D6 D0 D7 Q0 Q7 9 12 8 13 7 14 6 15 5 16 4 17 3 18 2 19 terminal 1 index area GND(1) Table 2. Pin description Symbol Pin Description MR 1 master reset input (active LOW) Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7 2, 5, 6, 9, 12, 15, 16, 19 flip-flop output D0, D1, D2, D3, D4, D5, D6, D7 3, 4, 7, 8, 13, 14, 17, 18 data input GND 10 ground (0 V) CP 11 clock input (LOW-to-HIGH, edge-triggered) VCC 20 supply voltage |
类似零件编号 - 74HC273DB |
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类似说明 - 74HC273DB |
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