BUY 74HC4538 https://www.utsource.net/itm/p/908235.html
Dual retriggerable precision monostable multivibrator
Description: The 74HC4538 is a high-speed CMOS logic device from Philips Semiconductors. It is a dual 4-input positive edge-triggered D-type flip-flop with a reset (R) input. It is designed for use in high-performance memory and logic systems. Features: High-speed operation: tpd = 6.0 ns (typ.) at VCC = 5.0 V Low power dissipation: ICC = 4.0 μA (max.) at Ta = 25°C High noise immunity: VNIH = VNIL = 28% VCC (min.) Balanced propagation delays: tPLH ≈ tPHL High output current: IOH = -4.0 mA (min.), IOL = 8.0 mA (min.) Compatible with TTL outputs Inputs accept voltages up to 7.0 V Applications: Memory systems High-performance logic systems Clock and timing circuits Frequency dividers Shift registers Counters (For reference only)