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Product Detailed Parameters
- Description：8.000156 MHz XO 1.8V 2.0X1.6 OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：8.000156 MHz
- Function：Enable/Disable
- 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)：21mA
- 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 18QHTF21-8.000156-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 8.000156 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals with low power consumption.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Enable/disable control for active and standby power modes
- Compact 4-SMD no-lead surface mount package
Applications
- Embedded systems requiring precise timing references
- Portable electronic devices needing low power operation
- Digital signal processing circuits
Procurement Notes
Verify the specific ordering suffix to ensure correct voltage and output configuration. Confirm package dimensions match PCB footprint requirements. Check datasheet for operating temperature range suitability. Ensure supply voltage matches system design specifications before integration.
Selection Notes
Select this model when a 1.8V supply and 8.000156 MHz frequency are required. Consider the enable pin feature for power-sensitive designs. Evaluate the small form factor against available board space. Compare performance metrics against alternative oscillators if stricter jitter or stability specs are needed.
Part Context
This part belongs to the QHTF series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and voltages. The 18 prefix indicates the 1.8V supply variant. The OE suffix typically denotes specific packaging or tape-and-reel configurations as defined by the manufacturer.
Replacement Considerations
Direct substitutes may include other 1.8V LVCMOS oscillators at 8.000156 MHz with identical pinouts. Verify electrical parameters such as load capacitance and drive strength. Ensure mechanical dimensions fit the existing footprint without modification.
