component

S-35390A-J8T1U

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by Ray

ABLIC Real-time Clocks (RTC), SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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S-35390A-J8T1U

ABLIC · Real-time Clocks (RTC) · SOIC-8

S-35390A-J8T1U from ABLIC, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 INT1 output Output pin for interrupt signal 1. Nch open-drain output with no protective diode at VDD. Can be configured (via Status Register 2) as alarm 1 interrupt, user-set frequency output, minute-periodical interrupt 1/2, or 32.768 kHz clock output. Requires an external pull-up resistor.
2 XOUT passive Quartz crystal connection pin. Connect a 32.768 kHz quartz crystal between XIN and XOUT. Load capacitance Cd is built-in; only external Cg may be required.
3 XIN passive Quartz crystal connection pin. Connect a 32.768 kHz quartz crystal between XIN and XOUT.
4 VSS power_in Ground (GND) reference pin. Connect to system ground.
5 INT2 output Output pin for interrupt signal 2. Nch open-drain output with no protective diode at VDD. Configurable (via Status Register 2) as alarm 2 interrupt, user-set frequency output, or minute-periodical interrupt 1. Requires an external pull-up resistor.
6 SCL input Serial clock input pin for the I2C-bus interface. CMOS input with no protective diode at VDD. SDA data is synchronized to this clock.
7 SDA bidirectional Serial data I/O pin of the I2C-bus interface. CMOS input and Nch open-drain output (no protective diode at VDD). Pull up to VDD via a resistor; supports wired-OR with other open-drain/collector devices.
8 VDD power_in Positive power supply pin. Operating range 1.3 V to 5.5 V. Typical quiescent current 0.25 µA at VDD = 3.0 V, Ta = +25 °C.

Key specifications

Parameter Value
Manufacturer ABLIC
Package SOIC-8
Category RTC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • S-35390A-J8T1U
  • S-35390A-J8T1G
  • S-35390A-J8T1UT8T1U
  • S-35390A-J8T1UT8T1G
  • S-35390A-J8T1UI8T1U

CAD (KiCad official)

  • Symbol: S-35390A-J8T1U
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ABLIC datasheet (57 pp, sha256 4a8654978deb6f09, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF