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74HC123DB 데이터시트(PDF) 5 Page - NXP Semiconductors |
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5 / 25 page 74HC_HCT123 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 8 — 16 December 2011 5 of 25 NXP Semiconductors 74HC123; 74HCT123 Dual retriggerable monostable multivibrator with reset 6. Functional description [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; = LOW-to-HIGH transition; = HIGH-to-LOW transition; = one HIGH level output pulse; = one LOW level output pulse. [2] If the monostable was triggered before this condition was established, the pulse will continue as programmed. 7. Limiting values [1] For DIP16 package: Ptot derates linearly with 12 mW/K above 70 C. [2] For SO16 package: Ptot derates linearly with 8 mW/K above 70 C. [3] For SSOP16 and TSSOP16 packages: Ptot derates linearly with 5.5 mW/K above 60 C. [4] For DHVQFN16 package: Ptot derates linearly with 4.5 mW/K above 60 C. Table 3. Function table[1] Input Output nRD nA nB nQ nQ L XXL H XH XL[2] H[2] XXL L[2] H[2] HL H H LH Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage 0.5 +7 V IIK input clamping current VI < 0.5 V or VI >VCC + 0.5 V - 20 mA IOK output clamping current VO < 0.5 V or VO > VCC + 0.5 V - 20 mA IO output current except for pins nREXT/CEXT; VO = 0.5 V to (VCC +0.5 V) - 25 mA ICC supply current - 50 mA IGND ground current - 50 mA Tstg storage temperature 65 +150 C Ptot total power dissipation DIP16 package [1] - 750 mW SO16 package [2] - 500 mW SSOP16 package [3] - 500 mW TSSOP16 package [3] - 500 mW DHVQFN16 package [4] - 500 mW |
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