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Product Detailed Parameters
- Description：72.8177 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：72.8177 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 18QHTF21-72.8177-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 72.8177 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic interface
- Standby and power-down mode support
- Compact 4-SMD no lead package
Applications
- Digital signal processing systems
- Communication equipment clocking
- Microcontroller timing references
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the 4-SMD no lead package footprint matches your PCB layout constraints to ensure proper soldering and mechanical reliability during assembly.
Selection Notes
Select this component when a 72.8177 MHz reference with LVCMOS outputs is required in a low-profile surface-mount form factor. Consider the 1.8V operating voltage and standby functionality if power management is a priority. Verify that the package dimensions align with space-constrained designs compared to larger through-hole or standard SMD alternatives.
Part Context
This part belongs to the Mercury Electronics 18QHTF series of quartz crystal oscillators. The series typically offers various frequencies with LVCMOS outputs in small packages. Mercury Electronics is a Taiwan-based manufacturer specializing in frequency control products, including crystals and oscillators, with a long history in the industry.
Replacement Considerations
Direct substitutes must match the 72.8177 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no lead package. Check pin compatibility and electrical characteristics carefully. Generic replacements may differ in tolerance or phase noise specifications.
