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Product Detailed Parameters
- Description：67.5 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：67.5 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 18QHTF21-67.500-PD is a 67.5 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The component features a Standby function for power down control. It is housed in a 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Supports Low Voltage CMOS (LVCMOS) output logic levels
- Includes standby capability for power management
- Compact surface-mount form factor
Applications
- General clock signal generation
- Digital circuit timing reference
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.
Selection Notes
Select this component when a precise 67.5 MHz clock source is required for low-voltage digital applications. The choice depends on the necessity for LVCMOS compatibility and the availability of a standby control signal. Consider the physical size constraints of the 2.0x1.6mm package relative to other available oscillator options in the same frequency range.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various standard frequencies. The series typically provides XO solutions with LVCMOS outputs and standby functions. Other variants in this line include different frequencies such as 67.000 MHz and 96.768 MHz, sharing similar package and electrical characteristics.
Replacement Considerations
Direct substitutes must match the 67.5 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal performance. Cross-reference with other manufacturers offering identical specifications to ensure functional equivalence without redesign.
