BUY 74HC670M https://www.utsource.net/itm/p/1867283.html
Description: 8-bit magnitude comparator
Features:
High-speed: tpd = 8.5 ns (typical) at VCC = 5 V
Low power dissipation: ICC = 1 μA (max) at TA = 25°C
Wide supply voltage range: VCC (opr) = 2 V to 6 V
Inputs accept voltages to 6 V
Outputs source/sink 24 mA
Complies with JEDEC standard JESD78
ESD protection:
Human-body model (HBM): 2000 V
Machine model (MM): 200 V
Charged-device model (CDM): 1000 V
Applications:
Magnitude comparison
Digital thermometers
Digital voltmeters
Digital tachometers
Digital frequency meters
(For reference only)
