CDC318ADLRG4

Overview

The CDC318ADLRG4 is a 1-to-18 clock buffer manufactured by Texas Instruments. It accepts an LVTTL input and provides 18 LVTTL/TTL outputs. The device operates within a supply voltage range of 3.135V to 3.465V and supports a maximum frequency of 100 MHz. It is housed in a 48-BSSOP package with a width of 7.50mm. The component is designed for surface mount assembly and functions reliably within an operating temperature range of 0°C to 70°C.

Feature Summary

• 1:18 fanout ratio for clock distribution
• LVTTL input compatible
• LVTTL and TTL output levels
• 100 MHz maximum operating frequency

Applications

• Clock distribution networks
• Digital signal processing systems
• Communication equipment timing circuits

Procurement Notes

Verify the 48-SSOP package dimensions and tape & reel packaging specifications against design requirements. Confirm that the 3.135V to 3.465V supply voltage range aligns with the target system power rails. Ensure the 0°C to 70°C commercial temperature grade meets environmental constraints.

Selection Notes

Select this component when a single LVTTL clock source needs to drive up to 18 LVTTL or TTL loads. The 100 MHz speed rating suits moderate-frequency digital applications. The 48-pin SSOP form factor is suitable for space-constrained surface-mount designs requiring high fanout capability.

Part Context

This part belongs to the CDC318 family of clock drivers from Texas Instruments. It serves as a fanout buffer, converting one input line into eighteen output lines. The RG4 suffix typically indicates a specific tape and reel packaging variant for automated assembly processes.

Replacement Considerations

Check for direct pin-compatible alternatives within the same TI clock buffer family. Verify if other 1:18 drivers offer different voltage ranges or temperature grades if system conditions vary.