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Product Detailed Parameters
- Description：8.784 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：8.784 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 18QHTF21-8.784-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 8.784 MHz and utilizes an LVCMOS output signal format. The device is designed for low-voltage applications, featuring a supply voltage of 1.8V. It includes 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 on printed circuit boards.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Integrated enable/disable pin for power management
- Compact 4-SMD no-lead surface mount package
Applications
- Embedded systems requiring precise clock timing
- Consumer electronics with low-voltage logic
- Industrial control modules needing stable oscillation
Procurement Notes
Verify the specific datasheet version for the 18QHTF21-8.784-OE to confirm electrical parameters such as current supply and frequency stability. Ensure the ordering suffix matches the required enable/disable functionality. Cross-reference the package outline drawing to confirm mechanical fit within the target design constraints before finalizing procurement.
Selection Notes
Select this component when a low-profile 1.8V oscillator with enable control is required. The 8.784 MHz frequency suits specific baud rate or system clock divisions. Compare against other Mercury 18QHTF21 series variants for different frequencies or voltage levels. Confirm that the LVCMOS swing meets the input requirements of the receiving logic gate.
Part Context
This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies and supports both 1.8V and 3.3V operation. The 'OE' suffix typically denotes the presence of an output enable feature. Mercury has been a pioneer in quartz crystal manufacturing since 1973, providing frequency control products globally.
Replacement Considerations
Direct substitutes include other 18QHTF21 series parts with identical pinout and envelope but different frequencies, such as 18QHTF21-8.000-OE. Verify that any replacement maintains the 1.8V supply requirement and LVCMOS output characteristics. Check if the enable/disable functionality is preserved in alternative candidates.
