CDC318ADL

Overview

The CDC318ADL is a single-line to eighteen-line clock driver manufactured by Texas Instruments. It functions as a fanout buffer with a 1:18 distribution ratio, converting one LVTTL input signal into eighteen LVTTL or TTL outputs. The device supports a maximum frequency of 100 MHz and operates within a supply voltage range of 3.135 V to 3.465 V. Designed for surface mount applications, it is housed in a 48-SSOP package (7.50 mm width). The component is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• 1-to-18 Clock Distribution Ratio
• 100 MHz Maximum Frequency
• LVTTL Input with LVTTL/TTL Outputs
• 3.135 V to 3.465 V Supply Voltage Range

Applications

• Clock distribution networks requiring high fanout
• System timing synchronization in embedded electronics
• Digital logic circuits utilizing LVTTL/TTL standards

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure compatibility with required packaging formats such as bulk or tube. Confirm that the 0°C to 70°C commercial temperature grade meets the operational environmental requirements of the target application before finalizing procurement.

Selection Notes

Select this component when a single clock source must drive up to eighteen loads using LVTTL or TTL signaling levels. Ensure the system power supply remains strictly within the 3.135 V to 3.465 V window to maintain signal integrity. Verify that the 48-SSOP footprint fits the PCB layout constraints and that the 100 MHz speed capability aligns with the system clock requirements.

Part Context

This part belongs to the Texas Instruments family of clock buffers and drivers. It serves as a specialized solution for expanding a single clock line into multiple synchronized paths. The device is distinct from differential clock drivers, focusing instead on single-ended LVTTL/TTL signal distribution for digital systems.

Replacement Considerations

Check for direct pin-compatible alternatives within the same Texas Instruments series that offer extended temperature ranges or different packaging options. Ensure any substitute maintains the 1:18 ratio and compatible LVTTL/TTL voltage levels.