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MAX6896, MAX6897, MAX6898,pdf
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2010-09-23
kmno4
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The MAX6895–MAX6899 is a family of small, low-power,
voltage-monitoring circuits with sequencing capability.
These miniature devices offer tremendous flexibility with
an adjustable threshold capable of monitoring down to
0.5V and an external capacitor-adjustable time delay.
These devices are ideal for use in power-supply
sequencing, reset sequencing, and power-switching
applications. Multiple devices can be cascaded for
complex sequencing applications.
A high-impedance input with a 0.5V threshold allows an
external resistive divider to set the monitored threshold.
The output asserts (OUT = high or OUT = low) when
the input voltage rises above the 0.5V threshold and the
enable input is asserted (ENABLE = high or ENABLE =
low). When the voltage at the input falls below 0.5V or
when the enable input is deasserted (ENABLE = low or
ENABLE = high), the output deasserts (OUT = low or
OUT = high). All devices provide a capacitor-programmable
delay time from when the input rises above 0.5V
to when the output is asserted. The MAX689_A versions
provide the same capacitor-adjustable delay from when
enable is asserted to when the output asserts. The
MAX689_P devices have a 1μs propagation delay from
when enable is asserted to when the output asserts.
voltage-monitoring circuits with sequencing capability.
These miniature devices offer tremendous flexibility with
an adjustable threshold capable of monitoring down to
0.5V and an external capacitor-adjustable time delay.
These devices are ideal for use in power-supply
sequencing, reset sequencing, and power-switching
applications. Multiple devices can be cascaded for
complex sequencing applications.
A high-impedance input with a 0.5V threshold allows an
external resistive divider to set the monitored threshold.
The output asserts (OUT = high or OUT = low) when
the input voltage rises above the 0.5V threshold and the
enable input is asserted (ENABLE = high or ENABLE =
low). When the voltage at the input falls below 0.5V or
when the enable input is deasserted (ENABLE = low or
ENABLE = high), the output deasserts (OUT = low or
OUT = high). All devices provide a capacitor-programmable
delay time from when the input rises above 0.5V
to when the output is asserted. The MAX689_A versions
provide the same capacitor-adjustable delay from when
enable is asserted to when the output asserts. The
MAX689_P devices have a 1μs propagation delay from
when enable is asserted to when the output asserts.
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