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Microcontrollers and Processors / Timers or RTCs / MCP7940N-I/ST
Datasheets
MCP7940N-I/ST by: Microchip Technology Inc

REAL TIME CLOCK, PDSO8, 4.40 MM, PLASTIC, TSSOP-8

Part Details for MCP7940N-I/ST by Microchip Technology Inc

Results Overview of MCP7940N-I/ST by Microchip Technology Inc

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

MCP7940N-I/ST Information

MCP7940N-I/ST by Microchip Technology Inc is a Timer or RTC.
Timers or RTCs are under the broader part category of Microcontrollers and Processors.

Microcontrollers (MCUs) are small, low-power integrated circuits used to control embedded systems. Microcontrollers are primarily used to automate and control devices. Read more about Microcontrollers and Processors on our Microcontrollers and Processors part category page.

Price & Stock for MCP7940N-I/ST

Part # Distributor Description Stock Price Buy
DISTI # 12X8717
Newark Rtcc, Gp I2C, 64B Sram, 8Tssop, Date Format:Yyyy:Mm:Wk:Dd:Hr:Min:Secs, Clock Format:12Hr/24Hr, Clock Ic Type:Alarm Rtc, Supply Voltage Min:1.8V, Supply Voltage Max:5.5V, Clock Ic Case Style:Tssop, No. Of Pins:8Pins, Ic Interface Rohs Compliant: Yes |Microchip MCP7940N-I/ST RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 0 Container: Bulk 0
  • 1 $0.9000
  • 10 $0.8650
  • 25 $0.8300
  • 50 $0.8150
  • 100 $0.8000
$0.8000 / $0.9000 Buy Now
DISTI # MCP7940N-I/ST-ND
DigiKey IC RTC CLK/CALENDAR I2C 8TSSOP Min Qty: 1 Lead time: 4 Weeks Container: Tube 1816
In Stock
  • 1 $0.9000
  • 25 $0.8300
  • 100 $0.8000
$0.8000 / $0.9000 Buy Now
DISTI # MCP7940N-I/ST
Avnet Americas Alarm RTC IC, Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr, I2C, 1.8 V to 5.5 V, TSSOP-8 - Rail/Tube (Alt: MCP7940N-I/ST) RoHS: Compliant Min Qty: 400 Package Multiple: 100 Lead time: 4 Weeks, 0 Days Container: Tube 0
  • 1 $0.9000
  • 25 $0.8300
  • 100 $0.7900
$0.7900 / $0.9000 Buy Now
DISTI # 579-MCP7940N-I/ST
Mouser Electronics Real Time Clock I2C GP RTCC 64B SRAM RoHS: Compliant 819
  • 1 $0.9000
  • 25 $0.8300
  • 100 $0.8000
$0.8000 / $0.9000 Buy Now
DISTI # V99:2348_06455077
Arrow Electronics Real Time Clock Serial 64byte Clock/Calendar/Alarm/Battery Backup Automotive AEC-Q100 8-Pin TSSOP Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 4 Weeks Date Code: 2342 Americas - 313
  • 1 $0.8376
$0.8376 Buy Now
DISTI # MCP7940N-I/ST
Microchip Technology Inc RTCC with battery-backed SRAM, TSSOP, Projected EOL: 2039-03-25 COO: Thailand ECCN: EAR99 RoHS: Compliant Lead time: 6 Weeks, 0 Days Container: Tube 100

Alternates Available
  • 1 $0.9000
  • 25 $0.8300
  • 100 $0.7900
  • 1,000 $0.7400
  • 5,000 $0.7100
$0.7100 / $0.9000 Buy Now
DISTI # 70451503
RS Microchip MCP7940N-I/ST, Real Time Clock, 64B RAM Serial-I2C, 8-Pin TSSOP Min Qty: 400 Package Multiple: 1 Lead time: 52 Weeks, 0 Days Container: Bulk 0
  • 400 $0.9600
  • 4,000 $0.9100
  • 20,000 $0.8600
  • 40,000 $0.8200
$0.8200 / $0.9600 RFQ
Onlinecomponents.com Battery-Backed I2C Real Time Clock/Calendar - 64-byte SRAM - 1.8 to 5.5VDC - 12/24 hour - I2C - -40°C to +85°C - 8-lead TSSOP RoHS: Compliant 600 In Stock
7000 Factory Stock
  • 100 $0.8870
  • 300 $0.8530
  • 500 $0.8400
  • 1,000 $0.8120
  • 2,500 $0.7750
  • 5,000 $0.7630
$0.7630 / $0.8870 Buy Now
DISTI # 69860969
Verical Real Time Clock Serial 64byte Clock/Calendar/Alarm/Battery Backup Automotive AEC-Q100 8-Pin TSSOP Tube RoHS: Compliant Min Qty: 100 Package Multiple: 100 Date Code: 2327 Americas - 600
  • 100 $1.1531
  • 300 $1.1089
  • 500 $1.0920
  • 1,000 $1.0556
  • 2,500 $1.0075
$1.0075 / $1.1531 Buy Now
DISTI # MCP7940N-I/ST
TME IC: RTC circuit, I2C, SRAM, 64BSRAM, 1.8÷5.5VDC, TSSOP8 Min Qty: 1 0
  • 1 $1.0700
  • 10 $0.9800
  • 25 $0.9600
  • 100 $0.8900
$0.8900 / $1.0700 RFQ
NAC I2C GP RTCC, 64B SRAM - Package: 8 TSSOP 4.4mm TUBE RoHS: Compliant Min Qty: 400 Package Multiple: 100 Container: Tube 0
  • 1 $1.0200
  • 100 $0.9200
  • 500 $0.8500
  • 1,000 $0.8200
$0.8200 / $1.0200 Buy Now
DISTI # MCP7940N-I/ST
Avnet Silica Alarm RTC IC YearMonthWeekDateHrMinSec 12Hr 24Hr I2C 18 V to 55 V TSSOP8 (Alt: MCP7940N-I/ST) RoHS: Compliant Min Qty: 100 Package Multiple: 100 Lead time: 6 Weeks, 0 Days Silica - 0
Buy Now
DISTI # MCP7940N-I/ST
EBV Elektronik Alarm RTC IC YearMonthWeekDateHrMinSec 12Hr 24Hr I2C 18 V to 55 V TSSOP8 (Alt: MCP7940N-I/ST) RoHS: Compliant Min Qty: 100 Package Multiple: 100 Lead time: 5 Weeks, 0 Days EBV - 200
Buy Now
Master Electronics Battery-Backed I2C Real Time Clock/Calendar - 64-byte SRAM - 1.8 to 5.5VDC - 12/24 hour - I2C - -40°C to +85°C - 8-lead TSSOP RoHS: Compliant 600 In Stock
7000 Factory Stock
  • 100 $0.8870
  • 300 $0.8530
  • 500 $0.8400
  • 1,000 $0.8120
  • 2,500 $0.7750
  • 5,000 $0.7630
$0.7630 / $0.8870 Buy Now
New Advantage Corporation   RoHS: Compliant Min Qty: 1 Package Multiple: 100 200
  • 100 $3.8900
  • 200 $3.5900
$3.5900 / $3.8900 Buy Now
Win Source Electronics IC RTC CLK/CALENDAR I2C 8-TSSOP 350
  • 21 $2.7946
  • 51 $2.2931
  • 78 $2.2215
  • 108 $2.1498
  • 139 $2.0781
  • 186 $1.8632
$1.8632 / $2.7946 Buy Now

Part Details for MCP7940N-I/ST

MCP7940N-I/ST CAD Models

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MCP7940N-I/ST Part Data Attributes

Parametric Data
MCP7940N-I/ST Microchip Technology Inc
Buy Now Datasheet
Compare Parts:
MCP7940N-I/ST Microchip Technology Inc REAL TIME CLOCK, PDSO8, 4.40 MM, PLASTIC, TSSOP-8
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer MICROCHIP TECHNOLOGY INC
Part Package Code SOIC
Package Description 4.40 MM, PLASTIC, TSSOP-8
Pin Count 8
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Factory Lead Time 4 Weeks
Samacsys Manufacturer Microchip
Clock Frequency-Max 0.032 MHz
External Data Bus Width
Information Access Method SERIAL(I2C)
Interrupt Capability Y
JESD-30 Code R-PDSO-G8
JESD-609 Code e3
Length 4.4 mm
Number of Terminals 8
Number of Timers
On Chip Data RAM Width 8
Operating Temperature-Max 85 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code TSSOP
Package Equivalence Code TSSOP8,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Qualification Status Not Qualified
RAM (words) 64
Screening Level TS 16949
Seated Height-Max 1.2 mm
Supply Current-Max 0.4 mA
Supply Voltage-Max 5.5 V
Supply Voltage-Min 1.8 V
Supply Voltage-Nom 2.5 V
Surface Mount YES
Technology CMOS
Temperature Grade INDUSTRIAL
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 0.65 mm
Terminal Position DUAL
Time-Min SECONDS
Volatile YES
Width 3 mm
uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK

Alternate Parts for MCP7940N-I/ST

This table gives cross-reference parts and alternative options found for MCP7940N-I/ST. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of MCP7940N-I/ST, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
MCP7940NT-I/ST Microchip Technology Inc $1.0040 REAL TIME CLOCK, PDSO8, 4.40 MM, PLASTIC, TSSOP-8 MCP7940N-I/ST vs MCP7940NT-I/ST
Part Number Manufacturer Composite Price Description Compare
MCP7940M-I/SN Microchip Technology Inc $0.6990 REAL TIME CLOCK MCP7940N-I/ST vs MCP7940M-I/SN
MCP7940M-I/P Microchip Technology Inc $0.7712 REAL TIME CLOCK MCP7940N-I/ST vs MCP7940M-I/P
MCP7940N-I/MS Microchip Technology Inc $0.7928 REAL TIME CLOCK, PDSO8, PLASTIC, MSOP-8 MCP7940N-I/ST vs MCP7940N-I/MS
MCP7940NT-I/SN Microchip Technology Inc $0.8335 REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8 MCP7940N-I/ST vs MCP7940NT-I/SN
MCP7940N-E/SN Microchip Technology Inc $0.8853 REAL TIME CLOCK MCP7940N-I/ST vs MCP7940N-E/SN
DS1339AU+ Analog Devices Inc $3.6405 Low-Current, I2C, Serial Real-Time Clock, 8-MINI_SO-N/A, 8 Pins, -40 to 85C MCP7940N-I/ST vs DS1339AU+
MCP7940MT-I/MNY Microchip Technology Inc $50.7140 REAL TIME CLOCK MCP7940N-I/ST vs MCP7940MT-I/MNY
DS1339AU+T Maxim Integrated Products Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, MSOP-8 MCP7940N-I/ST vs DS1339AU+T
MCP7940MT-I/SNVAO Microchip Technology Inc Check for Price Real Time Clock, 1 Timer(s), CMOS, PDSO8 MCP7940N-I/ST vs MCP7940MT-I/SNVAO
MCP7940N-E/P Microchip Technology Inc Check for Price Real Time Clock MCP7940N-I/ST vs MCP7940N-E/P

MCP7940N-I/ST Related Parts

MCP7940N-I/ST Frequently Asked Questions (FAQ)

  • The MCP7940N-I/ST can support clock frequencies up to 32 kHz.

  • The MCP7940N-I/ST automatically accounts for leap years, so no additional programming is required.

  • Yes, the MCP7940N-I/ST has a battery input pin (VBAT) that allows it to maintain the time and date even when the main power supply is removed.

  • The internal oscillator on the MCP7940N-I/ST has an accuracy of ±10 ppm over the operating temperature range.

  • Yes, the MCP7940N-I/ST has a high-accuracy timekeeping mode that allows it to maintain an accuracy of ±2 seconds per year.

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