MAX6314 68HC11/Bidirectional-Compatible µP Reset Circuit

Description

The MAX6314 low-power CMOS microprocessor (µP) supervisory circuit is designed to monitor power supplies in µP and digital systems. The MAX6314's active-low 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_CC supply voltage falls below a preset threshold or whenever manual reset is asserted. Reset remains asserted for an internally programmed interval (reset timeout period) after V_CC has 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.

Key Features

Applications/Uses

Small SOT143 Package
Active-Low RESET Output Simplifies Interface to Bidirectional Reset I/Os
Precision Factory-Set V_CC Reset Thresholds:
- 100mV Increments from 2.5V to 5V
±1.8% Reset Threshold Accuracy at T_A = +25°C
±2.5% Reset Threshold Accuracy over temp.
Four Reset Timeout Periods Available:
- 1ms, 20ms, 140ms, or 1120ms (minimum)
Immune to Short V_CC Transients
5µA Supply Current
Pin-Compatible with MAX811

	Computers: Desktop, Workstation, Server
	Controllers
	Critical µP and µC Power Monitoring
	Intelligent Instruments
	Portable Battery-Powered Equipment

Key Specifications: Supervisors (1 Monitored Voltage)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

Price^**

MAX6314

2.5 to 3.3
3.3 to 5.5

Bidirectional

1ms to 15ms
15ms to 85ms
85ms to 300ms
>1s

No Watchdog

Manual Reset

1.8

$0.99 @ 1k

See All Supervisors (1 Monitored Voltage) (270)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

MAX6314

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Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX6314US25D2+

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-40°C to +85°C

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MAX6314US25D3+

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MAX6314US27D1+

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MAX6314US27D1+T

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MAX6314US27D2+

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MAX6314US27D2+T

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MAX6314US27D3+

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MAX6314US27D3+T

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MAX6314US27D4+

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MAX6314US27D4+T

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MAX6314US28D1+

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MAX6314US28D1+T

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MAX6314US29D1+

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MAX6314US29D1+T

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MAX6314US29D2+

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MAX6314US29D4+

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MAX6314US29D4+T

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MAX6314US30D2+

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MAX6314US30D2+T

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MAX6314US30D3+

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MAX6314US30D3+T

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MAX6314US32D1+

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MAX6314US32D1+T

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MAX6314US32D2+

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MAX6314US32D2+T

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MAX6314US32D3+

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MAX6314US32D3+T

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MAX6314US32D4+

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MAX6314US32D4+T

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MAX6314US33D1+

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MAX6314US33D1+T

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MAX6314US33D2+

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MAX6314US33D2+T

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MAX6314US33D3+

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MAX6314US33D3+T

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MAX6314US33D4+

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MAX6314US33D4+T

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MAX6314US34D1+

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MAX6314US34D1+T

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MAX6314US34D2+

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MAX6314US34D2+T

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MAX6314US34D3+

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MAX6314US34D3+T

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MAX6314US34D4+

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MAX6314US34D4+T

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MAX6314US35D1+

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MAX6314US35D1+T

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MAX6314US35D2+

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MAX6314US35D2+T

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MAX6314US35D3+

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MAX6314US35D3+T

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MAX6314US35D4+

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MAX6314US35D4+T

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MAX6314US36D1+

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MAX6314US36D1+T

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MAX6314US36D2+

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MAX6314US36D2+T

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MAX6314US36D3+

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MAX6314US36D3+T

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MAX6314US36D4+

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MAX6314US36D4+T

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MAX6314US37D1+

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MAX6314US37D1+T

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MAX6314US37D2+

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MAX6314US37D2+T

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MAX6314US37D3+

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MAX6314US37D3+T

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MAX6314US37D4+

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MAX6314US37D4+T

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MAX6314US38D1+

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MAX6314US38D1+T

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MAX6314US38D2+

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MAX6314US38D2+T

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MAX6314US38D3+

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MAX6314US38D3+T

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MAX6314US38D4+

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MAX6314US38D4+T

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MAX6314US39D1+

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MAX6314US39D1+T

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MAX6314US39D2+

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MAX6314US39D2+T

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MAX6314US39D3+

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MAX6314US39D3+T

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MAX6314US39D4+

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MAX6314US39D4+T

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MAX6314US40D1+

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MAX6314US40D1+T

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MAX6314US40D2+

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MAX6314US40D2+T

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MAX6314US40D3+

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MAX6314US40D3+T

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MAX6314US40D4+

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MAX6314US40D4+T

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MAX6314US41D1+

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MAX6314US41D1+T

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MAX6314US41D2+

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MAX6314US41D2+T

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MAX6314US41D4+

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MAX6314US41D4+T

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MAX6314US42D1+

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