TC74HC423AF Datasheet | Toshiba

TC74HC423AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC423AP, TC74HC423AF Dual Retriggerable Monostable Multivibrator The TC74HC423A 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 low power dissipation. There are two trigger inputs, A input (negative edge), and B input (positive edge). These inputs are valid for a slow rise/fall time signal (tr = tf = 1 s) as they are schmitt trigger inputs. After triggering, the output stays in a MONOSTABLE state for a time period determined by the external resistor and capacitor (Rx, Cx ). A low level at the CLR input breaks this state. In the MONOSTABLE state, if a new trigger is applied, it extends the MONOSTABLE period (retrigger mode). Limitations for Cx and Rx are: External capacitor, Cx: No limit External resistor, Rx: VCC = 2.0 V more than 5 kΩ VCC ≥ 3.0 V more than 1 kΩ All inputs are equipped with protection circuits against static discharge or transient excess voltage. TC74HC423AP TC74HC423AF Features (Note) - High speed: tpd = 25 ns (typ.) at VCC = 5 V - Low power dissipation Standby state: ICC = 4 μA (max) at Ta = 25°C Active state: ICC = 700 μA (max) at VCC = 5 V - High noise immunity: VNIH = VNIL = 28% VCC (min) - Output drive capability: 10 LSTTL loads - Symmetrical output impedance: |IOH| = IOL = 4 m A (min) - Balanced propagation delays: tp LH ∼- tp HL - Wide operating voltage range: VCC (opr) = 2 to 6 V - Pin and function patible with 74LS423 Weight DIP16-P-300-2.54A SOP16-P-300-1.27A : 1.00 g (typ.) : 0.18 g (typ.) Note: In the case of using only one circuit, CLR should be tied to GND, Rx/Cx･Cx･Q･ Q should be tied to OPEN, the other inputs should be tied to VCC or GND. Start of mercial production 1988-05 2014-03-01 Pin Assignment TC74HC423AP/AF...