The MAX4644 is a single-pole/double-throw (SPDT) switch that operates from a single supply ranging from +1.8V to +5.5V. It provides low 4Ω on-resistance (RON) as well as 1Ω RON flatness over the entire analog signal range. The MAX4644 offers fast switching times of less than 20ns while ensuring break-before-make operation. It typically consumes only 0.01µW of quiescent power, making it suitable for use in low-power, portable applications.
The MAX4644's features include low leakage currents over the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. It is packaged in either a small 8-pin µMAX® or a tiny 6-pin SOT23.
Key Features
Applications/Uses
+1.8V to +5.5V Single-Supply Operation
Rail-to-Rail Analog Signal Range
Guaranteed RON
4Ωs max (+5V supply)
8Ωs max (+3V supply)
+1.8V Operation
RON 30Ωs typ Over Temperature
tON 18ns typ, tOFF 12ns typ
Guaranteed RON Flatness: 0.75Ωs typ (+5V supply)
Guaranteed RON Match Between Channels:
0.1 ohm typ (+5V supply)
Low Leakage (< 0.35nA) Over Entire Temperature Range
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