18QHTF21-1.064-PD

Overview

The 18QHTF21-1.064-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.064 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby (power down) function to reduce power consumption during idle periods. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm. The component is suitable for applications requiring precise clock signals in space-constrained electronic designs.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes LVCMOS output interface

Applications

• Portable electronic devices
• Battery-powered systems
• Compact consumer electronics

Procurement Notes

Verify the specific ordering suffix and frequency tolerance requirements against the official datasheet before procurement. Ensure that the 1.8V supply voltage aligns with the target system's power rails. Confirm the 4-SMD package footprint matches the PCB design constraints. Cross-reference the part number with the manufacturer's latest documentation to ensure availability and compliance with current specifications.

Selection Notes

Select this component when a low-frequency, low-voltage clock source is required for space-limited applications. The LVCMOS output ensures compatibility with standard digital logic families operating at 1.8V. Consider the standby feature if power efficiency is critical. Verify that the 1.064 MHz frequency meets the system timing requirements. Evaluate the small form factor against available board space.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6 mm SMD package. The series supports multiple supply voltages and output types, including LVCMOS. The 'PD' suffix typically indicates the inclusion of a power-down or standby control pin, allowing for active power management in the circuit design.

Replacement Considerations

Direct substitutes include other 1.064 MHz LVCMOS oscillators in a 4-SMD 2.0x1.6 mm package with 1.8V operation. Compatible alternatives must match the pinout configuration and support the standby function. Verify electrical parameters such as load capacitance and drive strength. Check for equivalent thermal and mechanical specifications.