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Product Detailed Parameters
- Description：81.2 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：81.2 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 18QHTF21-81.200-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 81.2 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise clock signals within a small form factor.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated standby mode to reduce power consumption
- Compact surface-mount package design
Applications
- General purpose clock signal generation
- Digital circuit timing reference
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific operating temperature range limitations required by your application environment.
Selection Notes
Select this component when a low-voltage, small-footprint oscillator is required. Consider the LVCMOS output level compatibility with downstream logic families. Evaluate the need for power-down functionality if battery life or thermal management is critical. Compare physical dimensions against available board space.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 2.0x1.6mm package. The series provides options for different clock speeds while maintaining consistent electrical characteristics and mechanical dimensions across the family.
Replacement Considerations
Direct substitutes may include other 81.2 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson or SiTime. Verify pinout compatibility and voltage levels when considering alternatives.
