MAX6314 Maxim, MAX6314 Datasheet

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MAX6314

Manufacturer Part Number
MAX6314
Description
68HC11/Bidirectional-Compatible P Reset Circuit
Manufacturer
Maxim
Datasheet

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The MAX6314 low-power CMOS microprocessor (µP)
supervisory circuit is designed to monitor power
supplies in µP and digital systems. The MAX6314’s
RESET output is bidirectional, allowing it to be directly
connected to µPs with bidirectional reset inputs, such
as the 68HC11. It provides excellent circuit reliability
and low cost by eliminating external components and
adjustments. The MAX6314 also provides a debounced
manual reset input.
This device performs a single function: it asserts a reset
signal whenever the V
preset threshold or whenever manual reset is
asserted. Reset remains asserted for an internally pro-
grammed interval (reset timeout period) after V
risen above the reset threshold or manual reset is
deasserted.
The MAX6314 comes with factory-trimmed reset
threshold voltages in 100mV increments from 2.5V
to 5V. Preset timeout periods of 1ms, 20ms, 140ms,
and 1120ms (minimum) are also available. The device
comes in a SOT143 package.
For a µP supervisor with an open-drain reset pin, see
the MAX6315 data sheet.
________________________Applications
19-1090; Rev 1; 1/99
* Patents Pending
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
TOP VIEW
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable/Battery-Powered Equipment
RESET
GND
________________________________________________________________ Maxim Integrated Products
2
1
CC
General Description
SOT143
MAX6314
supply voltage falls below a
Pin Configuration
68HC11/Bidirectional-Compatible
3
4
V
MR
CC
CC
has
Ordering and Marking Information appears at end of
data sheet.
Small SOT143 Package
RESET Output Simplifies Interface to
Bidirectional Reset I/Os
Precision Factory-Set V
100mV Increments from 2.5V to 5V
±1.8% Reset Threshold Accuracy at T
±2.5% Reset Threshold Accuracy Over Temp.
Four Reset Timeout Periods Available:
1ms, 20ms, 140ms, or 1120ms (minimum)
Immune to Short V
5µA Supply Current
Pin-Compatible with MAX811
**OR OTHER µC/µP WITH BIDIRECTIONAL RESET I/O PIN.
MR
MAX6314
CIRCUITRY
Typical Operating Circuit
RESET
µP Reset Circuit
GND
CC
V
CC
Transients
CC
LASER-
TRIMMED
RESISTORS
V
CC
RESET
4.7k
Reset Thresholds:
V
CC
68HC11**
RESET
Features
µP
A
= +25°C
1

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