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Product Detailed Parameters
- Description：70.656 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：70.656 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 18QHTF21-70.656-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 70.656 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes standby and power-down functionality to reduce power consumption
- Designed as a standard crystal oscillator with fixed frequency operation
Applications
- Digital signal processing systems requiring precise clock timing
- Communication equipment utilizing LVCMOS interfaces
- Portable electronic devices benefiting from low-voltage operation
Procurement Notes
Verify the specific suffix PD against official Mercury Electronics documentation to confirm pinout and electrical characteristics. Ensure the 1.8V supply requirement aligns with system design constraints. Confirm the 4-SMD no-lead package dimensions match PCB layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a 70.656 MHz clock source with LVCMOS outputs is required. The 1.8V operating voltage makes it suitable for low-power designs. Consider the standby feature if power management is critical. Verify that the 4-SMD package fits within the available board space constraints.
Part Context
This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies with consistent LVCMOS output and 1.8V operation. The PD suffix typically denotes specific packaging or handling variations within the product line.
Replacement Considerations
Direct substitutes include other 18QHTF21 variants with matching 70.656 MHz frequency and LVCMOS output. Ensure replacement parts maintain the 1.8V supply and 4-SMD package form factor for mechanical compatibility.
