Product Overview
Maxim MAX9142ESA Dual 40 ns Rail-to-Rail Comparator for 3 V and 5 V Single-Supply Boards
Condition
Condition: unused, new old stock (NOS). Markings legible: MAX9142 ESA. Sold each.
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Product Overview
Two high-speed, low-power comparators share one 8-pin SO body in Maxim's MAX9142ESA, built for single-supply 3 V and 5 V designs. Rail-to-rail inputs, internal hysteresis and CMOS/TTL-compatible outputs make it a clean threshold detector for battery-powered and mixed-signal boards.
Key Features
- Dual comparator: two comparators per package, no latch or shutdown pins
- 40 ns propagation delay at 10 mV overdrive
- 150 µA supply current per comparator at 3 V
- +2.7 V to +5.5 V single supply
- Rail-to-rail input voltage range; outputs swing within 300 mV of the rails, CMOS/TTL compatible
- Internal hysteresis, 500 µV offset voltage, -40°C to +85°C operating range, 8-pin SO surface-mount package
Applications
- Window comparator on one chip: one half watches the upper limit, the other the lower, on a single 3 V or 5 V rail
- Battery-voltage and sensor threshold alarms where 150 µA per channel matters
- Squaring a slow sensor or sine signal into clean logic edges for a microcontroller input
Frequently Asked Questions
Is this a single or a dual comparator?
Dual. Two comparators sit in one 8-pin SO package.
Will it run from a 3.3 V rail?
Yes. The supply range is +2.7 V to +5.5 V, so 3.3 V and 5 V rails both sit inside it, and the inputs are rail-to-rail.
Is this the SO or the SOT23 package?
The 8-pin SO. The SA in MAX9142ESA is the 8-pin SO code, and the E marks the -40°C to +85°C range.
Two comparators, one 8-pin body, and each one settles a yes-or-no question in 40 ns on 150 µA. Order the count the board calls for, plus one for the revision you already know is coming.
