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Product Detailed Parameters
- Description：74.5 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：74.5 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)：26mA
- 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 18QHTF21-74.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 74.5 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down standby function to reduce consumption. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm. This component serves as a precise clock source for digital circuits requiring low-profile timing solutions.
Feature Summary
- Supports power-down standby mode for energy efficiency
- Utilizes LVCMOS output logic for digital interface compatibility
- Compact 4-SMD no-lead surface mount package design
Applications
- General purpose clock generation for digital systems
- Embedded devices requiring low-profile oscillators
- Consumer electronics with space constraints
Procurement Notes
Verify the specific ordering suffix and frequency tolerance against the manufacturer's current datasheet before procurement. Ensure the supply voltage requirements align with the target circuit design. Confirm that the 4-SMD package footprint matches the PCB layout specifications to avoid assembly issues during manufacturing.
Selection Notes
Select this component when a 1.8V supply voltage and LVCMOS output are required. The 2.0x1.6 mm package size is suitable for applications with strict spatial limitations. Consider the operating temperature range and frequency stability needs relative to the specific application environment before finalizing the choice.
Part Context
This part belongs to the Mercury Electronics XO series, which provides standard crystal oscillators for various timing applications. The manufacturer specializes in quartz crystals and frequency control products, offering a range of oscillators including TCXO and VCTCXO options for different precision requirements.
Replacement Considerations
Check for direct substitutes within the same Mercury Electronics series or other manufacturers offering identical 74.5 MHz LVCMOS oscillators in 4-SMD packages. Verify pinout compatibility and electrical parameters such as supply voltage and output swing before substitution.
