BUY 74HC42 https://www.utsource.net/itm/p/1168063.html
BCD to decimal decoder 1-of-10
Description: The 74HC42 is a 4-bit binary counter with synchronous reset. Features: High-speed performance: tpd = 8.5 ns (typical) at VCC = 5 V Low power consumption: ICC = 2 μA (max) at Ta = 25 °C High noise immunity: VNIH = VNIL = 28 % VCC (min) Balanced propagation delays: tPLH tPHL Wide operating voltage range: VCC (opr) = 2 V to 6 V Output drive capability: 10 LSTTL loads Low input current: 1 μA (max) Applications: Frequency division Counting Time delay generation Pulse generation Sequential timing (For reference only)