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Product Detailed Parameters
- Description：74.963396 M XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：74.963396 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 18QHTF21-74.963396-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 74.963396 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features a standby or power-down capability for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- LVCMOS output logic interface
- Integrated standby and power-down functionality
- Compact 4-SMD no-lead surface mount package
Applications
- Digital signal processing systems requiring precise clocking
- Communication equipment utilizing standard frequency references
- Embedded control circuits needing low-voltage operation
Procurement Notes
Verify the specific ordering suffix to ensure compatibility with required frequency tolerance and stability specifications. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints. Check for any specific environmental ratings if operating in extreme conditions.
Selection Notes
Select this component when a 74.963396 MHz reference is required with LVCMOS compatibility. Consider the 1.8V operating voltage for low-power applications. Evaluate the 2.0x1.6mm package size against available board space. Verify that the standard oscillator type meets the phase noise and jitter requirements of the application.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd., which specializes in quartz crystal frequency control products. The series includes various frequencies and voltages, all sharing similar package and logic characteristics. Mercury Electronics has a long history in Taiwan's crystal manufacturing industry.
Replacement Considerations
Direct substitutes must match the 74.963396 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Cross-reference with other manufacturers offering identical electrical and mechanical specifications.
