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Product Detailed Parameters
- Description：10.178 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：10.178 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)：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 18QHTF21-10.178-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 10.178 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to conserve energy. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is suitable for applications requiring precise timing signals in low-power environments.
Feature Summary
- Supports standby mode for power management
- Compact surface-mount package design
- LVCMOS output interface compatibility
Applications
- Battery-powered portable devices
- Low-power consumer electronics
- Embedded systems requiring precise clock signals
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against your system requirements before procurement. Ensure that the 1.8V supply voltage aligns with your target circuit design. Confirm the availability of the 4-SMD No Lead package variant for your manufacturing process. Cross-reference the part number suffix PD to ensure it matches your desired specifications.
Selection Notes
Select this component when a low-profile, low-voltage oscillator is required for space-constrained designs. Consider the LVCMOS output level compatibility with your downstream logic circuits. Evaluate the power consumption benefits of the standby feature if battery life is a critical factor. Ensure the operating temperature range meets your environmental conditions.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequencies and voltage options. The 'PD' suffix likely indicates a specific pinout or packaging variation within the standard product line. Mercury Electronics specializes in quartz crystals and oscillators, providing timing solutions for diverse electronic applications.
Replacement Considerations
Direct replacements should be sought from the same manufacturer to ensure pin compatibility and electrical characteristics. Verify that any substitute part supports the same 1.8V supply and LVCMOS output. Check for equivalent package dimensions to maintain board layout integrity. Consult official substitution lists for confirmed compatible alternatives.
