M54HC123A |
Part Number | M54HC123A |
Manufacturer | STMicroelectronics (https://www.st.com/) |
Description | The M54/74HC123 is a high speed CMOS MONOSTABLE multivibrator fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS... |
Features |
puts, A INPUT (negative edge) and 8 INPUT (positive edge). These inputs are valid for slow rising/falling signals, (tr = tf = I sec). The device may also be triggered by using the CLR input (positive-edge) because of the Schmitt-trigger input ; after triggering the output maintains the MONOSTABLE state for the time period determined by the external resistor Rx and capacitor Cx. When Cx ≥ 10nF and Rx ≥ 10KΩ, the output pulse width value is approssimatively given by the formula: tw(out) = K • Cx • Rx. Two different pulse width constant are available: K ≅ 0.45 for HC123 K ≅ 1 for HC123A. Taking C... |
Document |
M54HC123A Data Sheet
PDF 291.68KB |
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