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Product Detailed Parameters
- Description：74.92 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：74.92 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 18QHTF21-74.920-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.92 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 with dimensions of 2.0x1.6 mm.
Feature Summary
- Supports low voltage operation at 1.8V
- Includes standby mode capability
- Utilizes LVCMOS output interface
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 your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.
Selection Notes
Select this component when a precise 74.92 MHz clock source is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage and standby feature for power-sensitive applications. Evaluate the small 2.0x1.6 mm package size for space-constrained designs requiring surface-mount integration.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 1.8V LVCMOS format. The series is designed for compact electronic applications requiring reliable clock signals. The 'PD' suffix indicates the inclusion of a power-down or standby functionality, distinguishing it from continuous-operation variants.
Replacement Considerations
Direct substitutes include other 74.92 MHz LVCMOS oscillators in a 4-SMD no-lead package with 1.8V operation. Verify pin compatibility and thermal characteristics when cross-referencing with alternative manufacturers. Ensure the replacement part supports the same standby functionality if power management is critical.
