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Product Detailed Parameters
- Description：8.3125 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：8.3125 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 18QHTF21-8.3125-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 8.3125 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features a standby power-down mode for energy management. It is housed in a compact 4-SMD, no-lead package designed for surface-mount applications.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes standby power-down functionality to reduce consumption
- Utilizes a 4-SMD no-lead surface-mount package
Applications
- General-purpose timing reference in electronic circuits
- Clock signal generation for digital systems
- Embedded system synchronization
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to ensure correct voltage and logic levels. Confirm that the 'PD' suffix corresponds to the required power-down feature. Request the latest datasheet directly from Mercury Electronics Ind. Co. Ltd or authorized distributors to validate electrical parameters and mechanical dimensions before integration.
Selection Notes
Select this component when a precise 8.3125 MHz clock source is required for low-voltage digital interfaces. Ensure the design accommodates the 1.8V supply requirement and the physical footprint of the 4-SMD package. Consider the standby capability if power efficiency during idle states is a critical design constraint.
Part Context
This part belongs to the QHTF series of crystal oscillators from Mercury Electronics Ind. Co. Ltd. The series offers various frequencies and voltages, typically utilizing quartz resonators for stable timing. The 18QHTF21 variant specifically denotes the 1.8V operating range within this product line.
Replacement Considerations
Direct substitutes include other 8.3125 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and voltage tolerance. Cross-reference with similar Mercury models like 18QHTF21 variants with different frequencies if the exact frequency is not mandatory.
