HT1381
Holtek SemiconExtended
1-Wire Protocol 2V~5.5V SOIC-8 Real Time Clocks ROHS
- Part id
- holtek-semicon/HT1381
- Category
- Real Time Clocks
- Package
- SOIC-8
- Pins
- 8
- In stock
- 0 at JLCPCB (C16495)
Overview
The HT1381 is a real Time Clock made by Holtek Semicon in a SOIC-8 package with 8 pins. 1-Wire Protocol 2V~5.5V SOIC-8 Real Time Clocks ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:HT1381, from EasyEDA) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C16495).
Symbol
Footprint
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | NC | Unspecified |
| 2 | XI | Unspecified |
| 3 | XO | Unspecified |
| 4 | VSS | Unspecified |
| 5 | RST# | Unspecified |
| 6 | I/O | Unspecified |
| 7 | SCLK | Unspecified |
| 8 | VDD | Unspecified |
Parts like it
8
PCF8563T/5
SO-8-40℃~+85℃ 0.25uA 1V~5.5V Battery low-voltage detection、Programmable clock output、Alarm function、Countdown timer I2C Yes SO-8 Real Time Clocks ROHSNXP SemiconductorsReal Time ClocksPCF8523T/1
SO-8-40℃~+85℃ 1.6V~5.5V 150nA Backup power management and battery charging、Alarm function、Sleep/Wake control Built-in I2C Yes SO-8 Real Time Clocks ROHSNXP SemiconductorsReal Time ClocksPCF85163T/1
SOIC-81.8V~5.5V Battery low-voltage detection、Programmable clock output、Alarm function、Periodic interrupt output、Countdown timer I2C SOIC-8 Real Time Clocks ROHSNXP SemiconductorsReal Time ClocksDS3231MZ+TRL
SOIC-8-40℃~+85℃ 100nA 2.3V~5.5V 200uA Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Periodic interrupt output Yes SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time ClocksDS1302Z+T&R
SOIC-80℃~+70℃ 1nA 2V~5.5V 300nA Backup power management and battery charging、InsideSRAM/NVRAM、Sleep/Wake control External SPI SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time ClocksDS1307Z+T&R
SOIC-80℃~+70℃ 1.5mA 300nA 4.5V~5.5V Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output External I2C SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time ClocksDS1307ZN+T&R
SOP-8-40℃~+85℃ 1.5mA 300nA 4.5V~5.5V Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output External I2C No SOP-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time ClocksGM1302
SOIC-8-40℃~+85℃ 1.2mA 1nA 2V~5.5V Backup power management and battery charging、InsideSRAM/NVRAM External SPI SOIC-8 Real Time Clocks ROHSGATEMODEReal Time Clocks
Questions
Is there a KiCad symbol and footprint for the HT1381?
Yes. The symbol is EasyEDA_Cloud:HT1381 and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the HT1381?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the HT1381 datasheet?
Holtek Semicon publishes it: the Datasheet link on this page opens it.
Where can I order the HT1381?
JLCPCB lists it as part C16495, with 0 in stock; the sellers' links on this page open their listings.
What can replace the HT1381?
Parts like it in the library: the PCF8563T/5 by NXP Semiconductors, the PCF8523T/1 by NXP Semiconductors, the PCF85163T/1 by NXP Semiconductors and the DS3231MZ+TRL by Maxim Integrated (Analog Devices). Check their datasheets: a part that fits the footprint may still differ in its ratings.