TOSHIBA TC74HC123APNEWF

The TC74HC123A is a high-speed CMOS monostable multivibrator fabricated using silicon gate C²MOS technology. It achieves high-speed operation comparable to equivalent LSTTL while maintaining the low power consumption characteristic of CMOS. There are two trigger inputs: the A̅ input (negative edge) and the B input (positive edge). These inputs are effective for slowly rising/falling signals (tr = tf = 1s) as they are Schmitt trigger inputs. The device can also be triggered via the CLR input (positive edge). After triggering, the output remains in the monostable state for a period determined by the external resistor and capacitor (Rx, Cx). A low level at the CLR input will terminate this state. In the monostable state, if a new trigger is applied, it extends the monostable period (retriggerable mode). All inputs are equipped with protection circuits against electrostatic discharge or transient overvoltage.

• High Speed... .tpd = 25ns (typ.) at V_CC = 5V
• Low Power Dissipation Standby State ...... I_CC = 4μA(Max.) at Ta = 25℃ Active State ...... I_CC = 700μA(Max.) at Ta = 25℃
• High Noise Immunity .... V_NIH = V_NIL = 28% V_CC (Min.)
• Output Drive Capability.... 10 LSTTL Loads
• Symmetrical Output Impedance... |I_OH| = |I_OL| = 4mA(Min.)
• Balanced Propagation Delays... Δt_PLH ≃ t_PHL
• Wide Operating Voltage Range... Vcc (opr.) = 2V ~ 6V
• Pin and Function Compatible with 74LS123