CDC208NSG4

Overview

The CDC208NSG4 is a fanout buffer and clock distribution integrated circuit manufactured by Texas Instruments. It features two independent circuits, each providing a 1:4 output ratio from a single TTL input. The device supports maximum operating frequencies up to 60 MHz and functions within a supply voltage range of 4.5 V to 5.5 V. Outputs are CMOS compatible. It is housed in a 20-SOIC surface-mount package with a width of 5.30 mm. The component operates reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel architecture with two independent 1:4 fanout buffers
• TTL input compatibility with CMOS outputs
• Maximum frequency performance of 60 MHz
• Operates on a 4.5 V to 5.5 V power supply

Applications

• Clock signal distribution in digital systems
• Fanout buffering for timing signals
• Industrial control applications requiring extended temperature operation

Procurement Notes

Verify the specific ordering suffix NSG4 against manufacturer documentation to confirm package type and tube packaging details. Ensure the design accommodates the 4.5 V to 5.5 V supply requirement and 20-SOIC footprint constraints. Confirm that TTL input levels match the source signal specifications for reliable logic threshold detection.

Selection Notes

Select this component when dual independent 1:4 clock distribution is required with TTL inputs. It is suitable for designs needing 60 MHz bandwidth and CMOS outputs. Consider the 20-SOIC package for surface-mount assembly. Verify thermal management requirements for the -40°C to +85°C operating range in the target environment.

Part Context

This part belongs to the clock buffer and driver category within Texas Instruments' portfolio. It serves as a discrete solution for clock tree expansion, distinct from programmable clock generators or multi-output synthesizers. The 20-pin SOIC package provides a compact form factor for standard PCB layouts.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family that may offer updated packaging or minor parameter variations. Ensure any substitute maintains the 1:4 ratio, TTL input, and CMOS output characteristics.