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Product Detailed Parameters
- Description：1.8412 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：1.8412 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)：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 18QHTF21-1.8412-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.8412 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for space-constrained portable electronics.
Feature Summary
- Supports standby power-down mode for energy efficiency
- Utilizes LVCMOS output logic for digital interface compatibility
- Compact 4-SMD no-lead surface mount package design
Applications
- Battery-powered portable devices
- Low-power consumer electronics
- Embedded systems requiring precise timing references
Procurement Notes
Verify the specific ordering suffix to ensure correct frequency and package configuration. Confirm that the LVCMOS output type matches the target circuit requirements. Check datasheet specifications for operating temperature range and load capacitance to ensure system compatibility before finalizing procurement.
Selection Notes
Select this component when a low-voltage 1.8V supply is required alongside a small footprint. The 2.0x1.6mm package size is ideal for dense PCB layouts. Ensure the application does not require spread spectrum or differential outputs, as this model provides standard single-ended LVCMOS signals.
Part Context
This part belongs to the 18QHTF21 series of miniature crystal oscillators from Mercury Electronics. The series offers various frequencies within a consistent 4-SMD form factor. The '-PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-output variants in the same physical package family.
Replacement Considerations
Direct substitutes must match the 1.8412 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package dimensions. Verify pinout compatibility, particularly the power-down function, when cross-referencing with other manufacturers' offerings.
