MAX6316, MAX6316M, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322 5-Pin µP Supervisory Circuits with Watchdog and Manual Reset

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The MAX6316–MAX6322 family of microprocessor (µP) supervisory circuits monitors power supplies and microprocessor activity in digital systems. It offers several combinations of push/pull, open-drain, and bidirectional (such as Motorola 68HC11) reset outputs, along with watchdog and manual reset features. The Selector Guide below lists the specific functions available from each device. These devices are specifically designed to ignore fast negative transients on V_CC. Resets are guaranteed valid for V_CC down to 1V.

These devices are available in 26 factory-trimmed reset threshold voltages (from 2.5V to 5V, in 100mV increments), featuring four minimum power-on reset timeout periods (from 1ms to 1.12s), and four watchdog timeout periods (from 6.3ms to 25.6s). Thirteen standard versions are available with an order increment requirement of 2500 pieces (see Standard Versions table); contact the factory for availability of other versions, which have an order increment requirement of 10,000 pieces.

The MAX6316–MAX6322 are offered in a miniature 5-pin SOT23 package.

Key Features

Applications/Uses

Small 5-Pin SOT23 Package
Available in 26 Reset Threshold Voltages
- 2.5V to 5V, in 100mV Increments
Four Reset Timeout Periods
- 1ms, 20ms, 140ms, or 1.12s (min)
Four Watchdog Timeout Periods
- 6.3ms, 102ms, 1.6s, or 25.6s (typ)
Four Reset Output Stages
- Active-High, Push/Pull
- Active-Low, Push/Pull
- Active-Low, Open-Drain
- Active-Low, Bidirectional
Guaranteed Reset Valid to V_CC = 1V
Immune to Short Negative V_CC Transients
Low Cost
No External Components

	Computers: Desktop, Workstation, Server
	Controllers
	Embedded Control Systems
	Intelligent Instruments
	Portable Battery-Powered Equipment
	Portable Computing

Key Specifications: Supervisors (1 Monitored Voltage)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Nom. Watchdog Timeout Range

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Industry Qualified

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX6316M

2.5 to 3.3
3.3 to 5.5

Bidirectional

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

Input (WDI)

1s to 2s
<1s
>2s

Manual Reset

1.5

Yes

Automotive - AECQ100
Automotive - General

SOT-23/5

-40 to +85
0 to +70

$1.15 @ 1k

See All Supervisors (1 Monitored Voltage) (268)

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.