S3880-32.768K Pletronics Crystal or Oscillator (Other) In Stock
Pletronics S3880-32.768K is a 32.768 kHz CMOS surface-mount oscillator in a 4-pin LCC package with enable/disable function, 10 pF output load, and 100 ns maximum fall time. It provides a stable real-time clock reference for microcontrollers and timing circuits in compact SMT designs. Available globally with competitive pricing and fast shipping for low-power embedded and consumer electronics applications.
- Manufacturer
- Pletronics
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- S3880-32.768K Datasheet PDF
- Category
- Crystal or Oscillator
- Price
- From $2.8200(MOQ 250)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32.768 kHz CMOS oscillator with enable/disable function for power gating in battery-powered devices, reducing standby current by selectively disabling the clock output
- 4-pin LCC surface-mount package minimizes PCB footprint compared to through-hole crystal oscillators, enabling compact RTC and timing circuit layouts
- 10 pF output load drive capability and 100 ns maximum fall time ensure clean CMOS-compatible clock edges for reliable microcontroller and FPGA clock inputs
Applications
The S3880-32.768K is the standard clock source for real-time clock (RTC) circuits in microcontroller systems, data loggers, and battery-backed timekeeping modules requiring 32.768 kHz precision frequency. Its enable/disable control pin is particularly useful in ultra-low-power IoT devices and wearables that duty-cycle the oscillator to extend battery life below 1 µA average current draw. The CMOS output is directly compatible with RTC IC inputs such as DS1307, PCF8563, and STM32 RTC peripherals without level-shifting or buffering.
Specifications
| YTEOL | 6 |
| Additional Feature | ENABLE/DISABLE FUNCTION |
| Fall Time-Max | 100ns |
| Frequency Adjustment-Mechanical | NO |
| Frequency Stability | 20% |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Nom | 0.032768MHz |
| Oscillator Type | CMOS |
| Output Load | 10pF |
| Package Body Material | CERAMIC |
| Package Equivalence Code | LCC4(UNSPEC) |
| Physical Dimension | 3.2mm x 1.5mm x 1.0mm |
| Rise Time-Max | 100ns |
| Screening Level | MIL-STD-883 |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Symmetry-Max | 60/40 % |
| Terminal Finish | GOLD OVER NICKEL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Switzerland |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why is 32.768 kHz chosen as the RTC clock frequency, and how does S3880-32.768K provide it?
32.768 kHz equals exactly 2^15 Hz, so a 15-bit binary counter divides it down to precisely 1 Hz for seconds counting — a key property exploited by virtually every RTC circuit since the 1970s. The S3880-32.768K generates this frequency using a CMOS oscillator in a 4-pin LCC SMT package, providing a stable 32.768 kHz output with 10 pF drive capability and 100 ns fall time, ready for direct connection to RTC IC clock inputs.
How does the enable/disable function of S3880-32.768K benefit battery-powered IoT designs?
The enable/disable pin allows the host microcontroller to shut off the 32.768 kHz clock output when the RTC is not needed, reducing oscillator current draw from the active state (typically 1 mA to 3 mA) to near zero during sleep intervals. In a coin-cell-powered device with a 220 mAh CR2032 battery, duty-cycling the oscillator at 1% on-time can extend device lifetime from a few weeks to over 2 years of periodic data logging at one sample per minute.
Is the S3880-32.768K compatible with standard DS1307 or PCF8563 RTC ICs without external buffering?
Yes — the S3880-32.768K provides a CMOS logic output at standard 3.3 V or 5 V supply levels with 10 pF output load drive, which is directly compatible with the 32.768 kHz clock inputs of popular RTC ICs including DS1307 (5 V), DS3231 (3.3 V), and PCF8563 (1.8 V to 5.5 V). No level shifter or buffer is required; the 100 ns maximum fall time ensures clean clock edges at input thresholds of 0.3× to 0.7× VCC typical of CMOS RTC input specifications.
What are the main package and mounting considerations when placing S3880-32.768K on a PCB near sensitive analog circuits?
The S3880-32.768K uses a 4-pin LCC surface-mount package, which should be placed within 10 mm of the RTC IC's clock input to minimize clock trace length and reduce susceptibility to coupling from adjacent switching power supplies. Routing the 32.768 kHz trace away from high-frequency signals above 1 MHz and using a guard trace connected to ground reduces interference; the 10 pF output drive limits current injection into nearby analog circuits operating at signal levels below 100 mV.
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Pletronics is a leading electronic component manufacturer. FindMyChip sources Pletronics ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $3.3800 | $845.00 |
| 1000+ | $2.8600 | $2860.00 |
| 2000+ | $2.8200 | $5640.00 |
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