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Product Detailed Parameters
- Description：1.68 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：1.68 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)：21mA
- 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 18QHTF21-1.680-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 1.68 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, supporting a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly.
Feature Summary
- LVCMOS output interface for digital signal compatibility
- Integrated enable/disable pin for power management
- Compact 4-SMD no-lead surface mount package
Applications
- Low-power portable electronic devices
- Consumer electronics requiring precise timing
- Embedded systems with limited voltage rails
Procurement Notes
Verify the specific ordering suffix against official Mercury Electronics documentation to ensure correct voltage and output type. Confirm package dimensions match PCB footprint requirements. Check datasheet for operating temperature range specifications relevant to the target environment. Ensure supply voltage matches the 1.8V requirement before integration.
Selection Notes
Select this component when a 1.68 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V supply constraint and the need for an enable control feature. Evaluate the small 2.0x1.6 mm footprint against available board space. Compare performance metrics such as jitter and stability if specified in the manufacturer's datasheet.
Part Context
This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies and voltage options within a standardized small outline package. Mercury Electronics specializes in quartz crystals and timing components, providing solutions for frequency control applications across multiple industries.
Replacement Considerations
Direct substitutes include other 1.68 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify electrical parameters and pinout compatibility before substitution. Alternative parts may require design adjustments if enable functions or package sizes differ.
