Datasheets
DS1305E/T&R by:

Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, TSSOP-20

Part Details for DS1305E/T&R by Maxim Integrated Products

Results Overview of DS1305E/T&R by Maxim Integrated Products

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DS1305E/T&R Information

DS1305E/T&R by Maxim Integrated Products 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 DS1305E/T&R

Part # Distributor Description Stock Price Buy
Vyrian Peripheral ICs 1629
RFQ

Part Details for DS1305E/T&R

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DS1305E/T&R Part Data Attributes

DS1305E/T&R Maxim Integrated Products
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DS1305E/T&R Maxim Integrated Products Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, TSSOP-20
Rohs Code No
Part Life Cycle Code Obsolete
Ihs Manufacturer MAXIM INTEGRATED PRODUCTS INC
Part Package Code TSSOP
Package Description 0.173 INCH, TSSOP-20
Pin Count 20
Reach Compliance Code not_compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Clock Frequency-Max 0.032 MHz
External Data Bus Width
Information Access Method SERIAL(SPI), SERIAL, 3-WIRE
Interrupt Capability Y
JESD-30 Code R-PDSO-G20
JESD-609 Code e0
Length 6.5 mm
Moisture Sensitivity Level 1
Number of Terminals 20
Number of Timers
Operating Temperature-Max 70 °C
Operating Temperature-Min
Package Body Material PLASTIC/EPOXY
Package Code TSSOP
Package Equivalence Code TSSOP20,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Qualification Status Not Qualified
Seated Height-Max 1.1 mm
Supply Voltage-Max 5.5 V
Supply Voltage-Min 2 V
Supply Voltage-Nom 5 V
Surface Mount YES
Technology CMOS
Temperature Grade COMMERCIAL
Terminal Finish TIN LEAD
Terminal Form GULL WING
Terminal Pitch 0.65 mm
Terminal Position DUAL
Time-Min SECONDS
Volatile YES
Width 4.4 mm
uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK

Alternate Parts for DS1305E/T&R

This table gives cross-reference parts and alternative options found for DS1305E/T&R. 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 DS1305E/T&R, 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
DS1305EN+ Analog Devices Inc $2.7875 Serial Alarm Real-Time Clock, 20-TSSOP_4.4-4.4_MM, 20 Pins, -40 to 85C DS1305E/T&R vs DS1305EN+
DS1305E+ Analog Devices Inc $2.8419 Serial Alarm Real-Time Clock, 20-TSSOP_4.4-4.4_MM, 20 Pins, 0 to 70C DS1305E/T&R vs DS1305E+
DS1305E+ Maxim Integrated Products $4.3696 Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, ROHS COMPLIANT, TSSOP-20 DS1305E/T&R vs DS1305E+
DS1305EN+T&R Analog Devices Inc $4.5150 Serial Alarm Real-Time Clock, 20-TSSOP_4.4-4.4_MM, 20 Pins, -40 to 85C DS1305E/T&R vs DS1305EN+T&R
DS1305EN+T&R Maxim Integrated Products $5.8982 Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, ROHS COMPLIANT, TSSOP-20 DS1305E/T&R vs DS1305EN+T&R
DS1305EN/T&R Maxim Integrated Products Check for Price Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, TSSOP-20 DS1305E/T&R vs DS1305EN/T&R
DS1305EN Maxim Integrated Products Check for Price Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 0.173 INCH, TSSOP-20 DS1305E/T&R vs DS1305EN
DS1305E Dallas Semiconductor Check for Price Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO20, 4.40 MM, TSSOP-20 DS1305E/T&R vs DS1305E

DS1305E/T&R Frequently Asked Questions (FAQ)

  • The recommended crystal oscillator frequency for the DS1305 is 32.768 kHz. This frequency is used to generate the clock signal for the real-time clock (RTC) and is required for proper operation.

  • The clock frequency for the DS1305 is set by connecting a crystal oscillator between the X1 and X2 pins. The crystal oscillator frequency is divided by 2^15 to generate the 1 Hz clock signal used by the RTC.

  • The RST (Reset) pin on the DS1305 is an active-low input that resets the RTC when pulled low. When the RST pin is pulled low, the RTC is reset to its default state, and all registers are cleared.

  • The DS1305 can be interfaced with a microcontroller using a 3-wire serial interface (SCL, SDA, and RST). The microcontroller can read and write data to the DS1305 using I2C protocol.

  • The DS1305 has a built-in battery-backed SRAM that allows the RTC to continue running even when the main power source is removed. The backup power source is typically a lithium coin cell battery connected to the VBAT pin.

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