LS Series Asynchronous, Negative Edge Triggered, 3-Bit, Up Direction Decade Counter Technical data: Ambient Temperature Range High 70 °C Clock Edge Trigger Type Negative Edge Direction Unidirectional Frequency 42 MHz Logic Function Counter Max Operating Temperature 70 °C Max Supply Voltage 5.25 V Min Operating Temperature 0 °C Min Supply Voltage 4.75 V Nominal Supply Current 9 mA Number of Bits 4 Number of Bits per Element 4 Number of Circuits 4 Number of Elements 1 Number of Inputs 2 Number of Outputs 1 Operating Supply Voltage 5 V Output Current 400 µA Propagation Delay 34 ns Reset Asynchronous Schedule B 8542390000, 8542390000|8542390000|8542390000|8542390000|8542390000 Sync/Async Asynchronous Turn-On Delay Time 50 ns https://elecena.pl/product/23210341/sn74ls90n-74ls90-hd74ls90p-decade-counter-ttl-dip14 2023-04-13 https://elecena.pl/product/23210341/sn74ls90n-74ls90-hd74ls90p-decade-counter-ttl-dip14 2025-10-29