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74HC423BQ 데이터시트(PDF) 4 Page - NXP Semiconductors |
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74HC423BQ 데이터시트(HTML) 4 Page - NXP Semiconductors |
4 / 24 page 74HC_HCT423 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 6 — 19 December 2011 4 of 24 NXP Semiconductors 74HC423; 74HCT423 Dual retriggerable monostable multivibrator with reset 5. Pinning information 5.1 Pinning 5.2 Pin description (1) The die substrate is attached to this pad using a conductive die attach material. It cannot be used as supply pin or input Fig 5. Pin configuration DIP16, SO16 and (T)SSOP16 Fig 6. Pin configuration DHVQFN16 74HC423 74HCT423 1A VCC 1B 1REXT/CEXT 1RD 1CEXT 1Q 1Q 2Q 2Q 2CEXT 2RD 2REXT/CEXT 2B GND 2A 001aah785 1 2 3 4 5 6 7 8 10 9 12 11 14 13 16 15 001aah784 74HC423 74HCT423 2REXT/CEXT 2B 2CEXT 2RD 2Q 2Q 1Q 1Q 1RD 1CEXT 1B 1REXT/CEXT Transparent top view 7 10 6 11 5 12 4 13 3 14 2 15 terminal 1 index area VCC(1) Table 2. Pin description Symbol Pin Description 1A, 2A 1, 9 trigger input (negative edge triggered) 1B, 2B 2, 10 trigger input (positive edge triggered) 1RD, 2RD 3, 11 direct reset (active LOW) 1Q, 2Q 4, 12 output (active LOW) GND 8 ground (0 V) 1Q, 2Q 13, 5 output (active HIGH) 1CEXT, 2CEXT 14, 6 external capacitor connection 1REXT/CEXT, 2REXT/CEXT 15, 7 external resistor/capacitor connection VCC 16 supply voltage |
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