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Product Detailed Parameters
- Description：69.545 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：69.545 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 18QHTF21-69.545-PD is a 69.545 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 device features a Standby (Power Down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for precision frequency generation in space-constrained electronic applications.
Feature Summary
- LVCMOS output logic interface
- Integrated Standby (Power Down) functionality
- Compact 4-SMD No Lead surface-mount package
Applications
- General clock signal generation
- Digital circuit timing references
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD No Lead footprint matches the PCB layout design to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this model when a low-voltage 1.8V operation is required alongside a small form factor. The LVCMOS output is suitable for standard digital logic interfaces. Consider the Standby feature if power efficiency during idle states is a priority. Verify that the 69.545 MHz frequency meets the specific timing requirements of the application circuit.
Part Context
This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies within a consistent 2.0x1.6mm SMD package. These components are engineered for reliability in consumer electronics and industrial control systems requiring stable clock signals.
Replacement Considerations
Direct substitutes include other 18QHTF21 variants with identical pinout and electrical characteristics but different frequencies, such as 18QHTF21-68.085-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application.
