74HCT126DB,118

Overview

The 74HCT126DB,118 is a quad buffer and line driver from the Nexperia HCT logic family. It features four non-inverting channels with three-state outputs controlled by dedicated output enable inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and utilizes an SSOP-14 surface-mount package. Key electrical specifications include a propagation delay of 25 ns at 4.5 V, static current of 8 uA, and output drive capabilities of -6 mA for high level and 6 mA for low level. It supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Provides four independent non-inverting buffer channels with three-state output control
• Compatible with standard TTL input levels due to HCT logic family characteristics
• Supports wide industrial operating temperatures up to +125 °C

Applications

• Data bus buffering in digital systems
• Line driving for signal integrity maintenance
• Interface isolation between different logic domains

Procurement Notes

Verify component authenticity through authorized Nexperia distributors or official manufacturer channels. Confirm the specific suffix '118' corresponds to the SSOP-14 packaging variant. Check for recent Product Change Notifications (PCN) regarding manufacturing site or material updates. Ensure compliance with RoHS directives as indicated in official documentation before integration into final assemblies.

Selection Notes

Select this component when four buffered channels with tri-state capability are required in a compact SSOP-14 footprint. The HCT series ensures compatibility with TTL-driven interfaces while maintaining CMOS noise immunity. Consider the 25 ns propagation delay and 6 mA drive strength against system timing requirements. Verify that the 4.5 V to 5.5 V supply range aligns with the target circuit design.

Part Context

This part belongs to the 74HCT126 series of quad buffers with 3-state outputs. It is functionally similar to the 74HCT125 but differs in pinout configuration. The 'DB' suffix denotes the SSOP-14 package, while '118' indicates the specific reel/cut-tape packaging format used by Nexperia for distribution.

Replacement Considerations

Direct substitutes include other 74HCT126 variants in SSOP-14 packages from Nexperia or compatible manufacturers. Cross-reference pinouts carefully as 74HCT125 and 74HCT126 differ in enable pin placement.