OV-7604-C7 Micro Crystal AG Crystal or Oscillator (Other) In Stock
Micro Crystal AG OV-7604-C7 is an ultra-miniature HCMOS ceramic SMD crystal oscillator operating at 32.768 kHz with enable/disable function in a 4-pin surface-mount package. Features tight frequency stability and a fall time of up to 70 ns for low-power RTC and timer applications. Available from stock worldwide.
- Manufacturer
- Micro Crystal AG
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- OV-7604-C7 Datasheet PDF
- Category
- Crystal or Oscillator
- 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 HCMOS output oscillator with enable/disable control pin for power gating in battery-operated devices, reducing standby current consumption
- Ultra-miniature 4-pin SMD ceramic package occupying less than 3.2 mm x 1.5 mm board footprint, enabling dense layout in wearables and IoT sensors
- 70 ns maximum fall time ensures clean HCMOS logic transitions compatible with low-voltage microcontroller clock inputs at 1.8 V to 3.3 V supply levels
- Tape-and-reel packaging supports automated SMT assembly for high-volume wearable, medical, and IoT production lines
- RoHS compliant (Pb-free, JESD-609 e4) meeting global environmental regulations for consumer and industrial markets
Applications
The OV-7604-C7 is designed for real-time clock (RTC) reference frequency generation in wearables, IoT sensor nodes, smartwatches, and portable medical monitors where the standard 32.768 kHz timekeeping frequency is required. Its enable/disable function allows the microcontroller to gate the oscillator output during deep sleep modes, extending battery life in devices running on coin cells below 3 V for months or years. The ultra-miniature SMD ceramic package is also used in wireless sensor modules, GPS backup timers, and industrial data loggers where PCB space is constrained to areas under 10 mm x 10 mm.
Specifications
| Pbfree Code | Yes |
| YTEOL | 6.44 |
| Additional Feature | ENABLE/DISABLE FUNCTION; TAPE AND REEL |
| Fall Time-Max | 70ns |
| Frequency Adjustment-Mechanical | NO |
| Frequency Stability | 126% |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Nom | 0.032768MHz |
| Oscillator Type | HCMOS |
| Output Load | 15pF |
| Output Low Current-Max | 1mA |
| Package Body Material | CERAMIC |
| Package Equivalence Code | LCC4,.06X.12,96/35 |
| Physical Dimension | 3.2mm x 1.5mm x 1.0mm |
| Qualification Status | Not Qualified |
| Rise Time-Max | 70ns |
| Supply Current-Max | 0.0005mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.2V |
| Surface Mount | YES |
| Symmetry-Max | 40/60 % |
| Technology | CMOS |
| Terminal Finish | Gold (Au) |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Switzerland |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for OV-7604-C7:
suggested
suggested
suggested
Frequently Asked Questions
What output frequency and logic family does OV-7604-C7 provide, and which microcontroller clock inputs is it compatible with?
The OV-7604-C7 operates at 32.768 kHz with an HCMOS output, making it directly compatible with the RTC clock inputs of most ARM Cortex-M, STM32, nRF52, and PIC microcontrollers that accept 32.768 kHz references at 1.8 V to 3.3 V logic levels. Its 70 ns maximum fall time meets HCMOS switching specifications, ensuring reliable clock edge detection even at VCC as low as 1.8 V without additional buffering or level shifting.
How does the enable/disable pin on OV-7604-C7 help extend battery life in wearable devices?
The enable/disable function on OV-7604-C7 allows the host microcontroller to cut the oscillator's supply current to near zero during deep sleep periods by asserting a single GPIO pin, reducing the oscillator's contribution to standby current from its active draw down to the sub-microamp leakage level. In a wearable device on a 180 mAh coin cell with a 1% duty cycle, gating the oscillator between RTC wake events can extend battery life by 5% to 15% compared to leaving a free-running 32.768 kHz oscillator continuously active.
What is the physical package size of OV-7604-C7, and how does it compare to a standard 2-pad crystal for the same frequency?
The OV-7604-C7 uses an ultra-miniature 4-pin SMD ceramic package with typical dimensions of approximately 3.2 mm x 1.5 mm x 0.9 mm, which is an integrated oscillator module that is slightly larger than a bare 2-pad 32.768 kHz crystal (typically 1.6 mm x 1.0 mm) but eliminates the need for two external load capacitors of 6 pF to 12.5 pF each. The OV-7604-C7 thus reduces total component count by 2 parts and saves PCB routing area in high-density layouts of wearables or IoT modules smaller than 20 mm x 20 mm.
Is OV-7604-C7 RoHS compliant, and how is it packaged for automated PCB assembly?
Yes, OV-7604-C7 is RoHS compliant per JESD-609 Code e4, confirming lead-free terminations and restriction of hazardous substances including cadmium, mercury, and hexavalent chromium. It ships in tape-and-reel format compatible with standard 8 mm carrier tape for pick-and-place machines, supporting production throughput of thousands of placements per hour on automated SMT lines for consumer electronics, medical wearables, and industrial IoT devices.
For a smartwatch design needing a 32.768 kHz RTC reference, when is OV-7604-C7 preferred over a discrete crystal plus oscillator circuit?
OV-7604-C7 is preferred when PCB area is under 5 mm x 5 mm and design time must be minimized, because the integrated oscillator circuit removes the need to design and characterize a discrete crystal oscillator loop with matched load capacitors of 6 pF to 12.5 pF and a series resistor. A discrete design requires at minimum 3 external passive components and careful layout to avoid parasitic coupling above 1 pF, while OV-7604-C7 delivers a characterized 32.768 kHz HCMOS output in a single 4-pin package that meets RTC accuracy targets within its rated frequency stability of 126 ppm.
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