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54121

National Semiconductor
Part Number 54121
Manufacturer National Semiconductor
Description Monostable Multivibrator
Published Apr 1, 2005
Detailed Description 54121 DM54121 DM74121 One-Shot with Clear and Complementary Outputs June 1989 54121 DM54121 DM74121 One-Shot with Clea...
Datasheet PDF File 54121 PDF File

54121
54121

Overview
54121 DM54121 DM74121 One-Shot with Clear and Complementary Outputs June 1989 54121 DM54121 DM74121 One-Shot with Clear and Complementary Outputs General Description The DM54 74121 is a monostable multivibrator featuring both positive and negative edge triggering with complementary outputs An internal 2kX timing resistor is provided for design convenience minimizing component count and layout problems This device can be used with a single external capacitor Inputs (A) are active-low trigger transition inputs and input (B) is an active-high transition Schmitt-trigger input that allows jitter-free triggering from inputs with transition rates as slow as 1 volt second A high immunity to VCC noise of typically 1 5V is also provided by internal circuitry at the input stage To obtain optimum and trouble free operation please read operating rules and NSC one-shot application notes carefully and observe recommendations Y Y Y Y Y Y Y Jitter free Schmitt-trigger input Excellent noise immunity ...


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