SN74AHCT126DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT126DBR is a quadruple bus buffer gate with three-state outputs manufactured by Texas Instruments. It belongs to the 74AHCT logic series, designed for CMOS technology with TTL-compatible inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports high-level output currents of -8 mA and low-level output currents of 8 mA. It features a propagation delay of 7.5 ns and is housed in a 14-pin TSSOP package. The component functions as a non-inverting buffer with four independent channels, each capable of driving loads while maintaining signal integrity across an operating temperature range of -40°C to +125°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides four independent non-inverting buffer channels with three-state output control for efficient bus management.
• Features TTL-compatible inputs allowing direct interfacing with TTL-driven signals without level shifting requirements.
• Supports high drive capability with specified output currents suitable for loading standard digital circuits.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock buffering and distribution networks
• Voltage translation between different logic families

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DBR' corresponds to the 14-TSSOP package and reel packaging configuration when sourcing. Confirm that the AHCT series designation ensures compatibility with 5V systems requiring TTL input thresholds. Check for automotive or military variants if extended qualification beyond standard industrial specifications is required for the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring multiple buffered outputs driven by a single control line. The AHCT series is appropriate for applications needing robust noise immunity at 5V operation. Consider the TSSOP package dimensions for PCB layout constraints. Ensure the load capacitance does not exceed the rated limits to maintain signal timing specifications during high-speed switching operations.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is a member of the widely used 74HC/HCT logic family, specifically optimized for high-speed CMOS performance with TTL-compatible inputs. The '126' designation indicates a quad buffer with enable functionality. The 'A' prefix denotes advanced high-speed CMOS technology, offering improved speed over standard HC devices while maintaining low power consumption characteristics typical of modern digital logic implementations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AHCT126DWR: Same logical function and pinout but utilizes a PW (TSSOP) package variant which may require footprint adaptation. SN74HCT126DBR: Standard HCT series alternative with slightly different electrical characteristics and potentially lower speed performance compared to the AHCT version.