74HCT2G126DC,125

Overview

The 74HCT2G126DC,125 is a dual buffer/line driver with 3-state outputs controlled by output enable inputs (nOE). It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level input signals. The device features symmetrical output impedance, high noise immunity, and low power dissipation. It includes input clamp diodes for interfacing with voltages exceeding VCC. ESD protection exceeds 2000 V per HBM and 200 V per MM standards. Propagation delay is specified at 30 ns maximum at 4.5 V. The component is housed in an 8-lead VSSOP package.

Feature Summary

• Dual non-inverting buffer/line drivers with 3-state outputs
• TTL-compatible input levels for direct interface with standard logic
• High noise immunity and balanced propagation delays
• Robust ESD protection meeting JEDEC standards

Applications

• Bus-oriented applications requiring data isolation
• Clock buffering and distribution circuits
• Memory address/data bus drivers
• I/O port expansion systems

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when TTL-level compatibility is required alongside CMOS drive capabilities. Ensure the application voltage remains within the 4.5 V to 5.5 V range. Consider the VSSOP-8 package constraints for thermal management and PCB space. Verify that the 3-state control logic aligns with the system's bus arbitration requirements.

Part Context

This part belongs to the NXP 74HC(H)T2G series of dual-function logic devices. These components are designed for compact surface-mount applications where space is limited. The series offers various voltage ranges and input/output configurations to support diverse digital logic interfaces in consumer electronics and industrial equipment.

Replacement Considerations

Direct pin-to-pin replacements include other 74HCT2G126 variants from NXP or compatible manufacturers, provided they match the VSSOP-8 package and electrical specifications. Verify that substitute parts maintain identical propagation delays and output drive currents.