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Product Detailed Parameters
- Description：12.8 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：12.8 MHz
- Function：Enable/Disable
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：22mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-12.800-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 12.8 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Supports active low enable/disable control for power management
- Utilizes LVCMOS output logic for digital interface compatibility
- Designed in a small form factor surface-mount package
Applications
- Embedded systems requiring precise clock timing
- Consumer electronics with space constraints
- Industrial control modules
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the LVCMOS output swing is compatible with the receiving logic inputs. Check the datasheet for operating temperature range specifications to guarantee reliability under your environmental conditions.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a standard 12.8 MHz reference frequency. The enable pin functionality makes it suitable for applications needing power conservation during idle states. Consider the 2.0x1.6mm footprint if board real estate is limited compared to larger oscillator packages.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronic, which offers various frequencies within a standardized 4-SMD no-lead package. The series typically provides LVCMOS outputs and support for multiple supply voltages, allowing designers to maintain consistent mechanical footprints across different frequency requirements.
Replacement Considerations
Direct substitutes include other 12.8 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter before swapping.
