MAX6818EAP+T

The MAX6818EAP+T is a ±15KV ESD protected, octal, CMOS switch debouncers in 20 pin SSOP package. It provides clean interfacing of mechanical switches to digital systems. It accepts one or more bouncing inputs from a mechanical switch and produces a clean digital output after a short, preset qualification delay. Both switch opening bounce and switch closing bounce are removed. Robust switch inputs handle ±25V levels and are ±15KV ESD protected for use in harsh industrial environments. It features single supply operation from +2.7V to +5.5V. Undervoltage-lockout circuitry ensures the output is in correct state upon power-up. The MAX6818 monitors switches. Additionally, the MAX6818 has three state outputs controlled by an enable (active-low EN) pin. Typical applications include µP switch interfacing, industrial instruments, PC based instruments, portable instruments and membrane keypads.

• Switch debouncer integration simplifies system interface to mechanical switches
• No external components required, designed for data bus interfacing
• 6μA supply current, 40ms debounce duration
• Built-in protection circuitry improves system reliability
• Inputs can exceed power supplies up to ±25V
• ±15KV human body model, ±8KV IEC 1000-4-2 contact discharge, ±15KV IEC 1000-4-2 air gap discharge
• Direct data bus interface
• Pin compatible with LS573 octal latch (except for the CH pin)
• Switch change of state output (active-low CH), simplifying microprocessor polling and interrupts
• Operating temperature range form -40°C to +125°C

Applications

Signal Processing, Industrial, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party