TC1275 MICROCHIP [Microchip Technology], TC1275 Datasheet

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TC1275

Manufacturer Part Number
TC1275
Description
3-Pin Reset Monitors for 3.3V Systems
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TC1275-5ENBTR
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Features
• Precision V
• 100msec Minimum RESET, RESET Output
• Output Valid to V
• V
• Small 3-Pin SOT-23B Package
• No External Components
Applications
• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical µP Power Supply Monitoring
Device Selection Table
NOTE: “x” denotes a suffix for V
Package Type
©
TC1275-xENB
TC1276-xENB
TC1277-xENB
Duration
2002 Microchip Technology Inc.
NOTE: 3-Pin SOT-23B is equivalent to JEDEC TO-236
*( ) is for TC1277
Number
CC
Part
*(RESET)
Transient Immunity
RESET
Suffix
10
20
V
5
CC
CC
Complimentary 3-Pin SOT-23B
Complimentary 3-Pin SOT-23B
Open Drain
Monitor for 3.3V Systems
1
2
Order
3-Pin SOT-23B
CC
TC1275-xENB
TC1276-xENB
TC1277-xENB
3-Pin Reset Monitors for 3.3V Systems
= 1.2V
CC
Reset V
threshold (see table below).
3-Pin SOT-23B
Package
CC
3
3.06
2.88
2.55
Threshold (V)
TC1275/TC1276/TC1277
GND
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Range
Temp.
General Description
The
system supervisor circuits designed to monitor V
digital systems and provide a reset signal to the host
processor when necessary. No external components
are required.
The reset output is driven active within 20µsec of V
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 100msec after V
rises above the reset threshold. The TC1277 has an
active-high RESET output while the TC1275 and
TC1276 have an active-low RESET output. TC1275
and TC1277 each have a complimentary output while
the TC1276 has an open drain output. The output of the
TC1275 and TC1276 is valid down to V
TC1277 is valid down to V
are available in a 3-Pin SOT-23B package.
The TC1275/TC1276/TC1277 devices are optimized to
reject fast transient glitches on the V
Typical Operating Circuit
V
CC
TC1275/TC1276/TC1277
TC1275
GND
3
2
V
CC
RESET
CC
1
= 1.8V. All three devices
are
CC
DS21383B-page 1
CC
line.
RESET
Input
cost-effective
Processor
= 1.2V. The
GND
V
CC
CC
CC
CC
in

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TC1275 Summary of contents

Page 1

... TC1276 have an active-low RESET output. TC1275 and TC1277 each have a complimentary output while the TC1276 has an open drain output. The output of the TC1275 and TC1276 is valid down to V TC1277 is valid down to V are available in a 3-Pin SOT-23B package. The TC1275/TC1276/TC1277 devices are optimized to reject fast transient glitches on the V Temp ...

Page 2

... All voltages referenced to ground. ≥ 2.7 volts. 2: Measured with Measured with RESET output open for TC1275/TC1276; measured with RESET output open for TC1277 5µsec 1kΩ external resistor may be required in some applications for proper operation of the microprocessor reset control circuit when using the TC1276 ...

Page 3

... V TC1275 is complimentary. The output stage of the TC1276 is open drain. 1 RESET (TC1277) RESET output remains high while V 200msec (100msec min.) after V TC1277 is complimentary Supply voltage (1.2V to 5.5V TC1275 and TC1276, 1.8V to 5.5V TC1277 GND Ground. 2002 Microchip Technology Inc. © TC1275/TC1276/TC1277 Description ...

Page 4

... TC1275/TC1276/TC1277 3.0 APPLICATIONS INFORMATION 3.1 Operation – Power Monitor The TC1275/TC1276/TC1277 provide the function of detecting out-of-tolerance power supply conditions and warning a processor-based system of impending power failure. When V is detected as out-of- CC tolerance, the RESET signal is asserted. On power-up, RESET is kept active for approximately 200msec after the power supply has reached the selected tolerance ...

Page 5

... TC1277. 3.3 RESET Signal Integrity During Power-Down The TC1275 RESET output is valid to V Below this voltage the output becomes an "open circuit" and does not sink current. This means CMOS logic inputs to the µP will be floating at an undeter- mined voltage. Most digital systems are completely shut down well above this voltage ...

Page 6

... TC1275/TC1276/TC1277 4.0 TYPICAL CHARACTERISTICS Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...

Page 7

... PACKAGING INFORMATION 5.1 Package Marking Information & = part number code + temperature range 1 2 and voltage TC1275 (V) Code 2.55 DA 2.88 DB 3.06 DC 5.2 Taping Form Component Taping Orientation for 3-Pin SOT-23B (JEDEC TO-236) Devices Device Marking PIN 1 Standard Reel Component Orientation For TR Suffix Device (Mark Right Side Up) ...

Page 8

... TC1275/TC1276/TC1277 5.3 Package Dimensions 3-Pin SOT-23B .104 (2.64) .083 (2.10) .040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) DS21383B-page 8 .021 (0.54) .015 (0.37) .055 (1.40) .047 (1.20) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) 8 MAX. .010 (0.25) .005 (0.13) .081 (2.05) .070 (1.78) Dimensions: inches (mm) .007 (0.18) .003 (0.08) 2002 Microchip Technology Inc. © ...

Page 9

... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products.  2002 Microchip Technology Inc. TC1275/TC1276/TC1277 DS21383B-page9 ...

Page 10

... TC1275/TC1276/TC1277 NOTES: DS21383B-page10  2002 Microchip Technology Inc. ...

Page 11

... Microchip. No licenses are con- veyed, implicitly or otherwise, under any intellectual property rights. 2002 Microchip Technology Inc. © TC1275/1276/1277 Trademarks The Microchip name and logo, the Microchip logo, FilterLab microID, MPLAB, PIC, PICmicro, PICMASTER, ...

Page 12

W ORLDWIDE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Rocky Mountain 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7966 Fax: 480-792-7456 Atlanta 500 Sugar Mill Road, ...

Page 13

... This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components. ...

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