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Product Detailed Parameters
- Description：8.704 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：8.704 MHz
- Function：Standby (Power Down)
- 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 18QHTF21-8.704-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 8.704 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features a standby or power-down function to manage energy consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- Supports standby mode for power management
- Utilizes LVCMOS output interface
- Operates on 1.8V supply voltage
Applications
- Battery-powered portable devices
- Low-power embedded systems
- Consumer electronics requiring precise timing
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to prevent assembly issues during manufacturing.
Selection Notes
Select this component when a low-voltage, low-power clock source is required for digital circuits. The LVCMOS output is compatible with standard CMOS logic families. Consider the operating temperature range and stability specifications to ensure reliable performance under environmental conditions. The integrated power-down feature makes it suitable for devices with strict energy efficiency constraints.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically includes various frequencies optimized for consumer and industrial applications. Mercury Electronic has been a manufacturer of frequency control products since 1973, specializing in quartz crystals and oscillators.
Replacement Considerations
Compatible substitutes include other 1.8V LVCMOS oscillators in 4-SMD packages with similar frequency ratings. Verify pinout compatibility and electrical parameters such as current consumption and startup time before substitution.
