74HCT2G125DC,125

Overview

The Nexperia 74HCT2G125DC,125 is a dual buffer and line driver featuring three-state outputs controlled by active-low output enable inputs (nOE). It belongs to the HCT logic family, providing TTL-compatible input levels. The device operates within a supply voltage range of 4.5 V to 5.5 V. It utilizes a VSSOP8 package (SOT765-1) with eight leads. Key electrical characteristics include a maximum propagation delay of 38 ns at 4.5 V, an operating temperature range from -40 °C to +125 °C, and ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

Feature Summary

• Features three-state outputs for bus-oriented applications.
• Provides TTL-compatible input switching levels.
• Includes clamp diodes on inputs for interfacing with voltages exceeding VCC.
• Offers high noise immunity and low power CMOS dissipation.

Applications

• Bus-oriented systems requiring signal buffering.
• Clock distribution circuits.
• Memory address and data bus drivers.

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when TTL-level compatibility is required for CMOS logic interfaces. The VSSOP8 package is suitable for space-constrained designs. Ensure the application voltage remains within the 4.5 V to 5.5 V range to maintain specified performance parameters.

Part Context

This part is part of the Nexperia 74HCT2Gxx series of dual-gate logic devices. It shares the same pinout and physical dimensions as the 74HC2G125 but differs in input threshold specifications to accommodate TTL logic families. The DC suffix denotes the VSSOP8 plastic very thin shrink small outline package.

Replacement Considerations

The 74HC2G125DC,125 is electrically compatible regarding pinout and package but uses CMOS input levels instead of TTL. Verify that the system input signals meet the HCT threshold requirements before substituting.

FAQ

What is the function of the nOE pins?

The nOE pins are active-low output enable inputs. When driven LOW, the buffers are enabled; when HIGH, the outputs enter a high-impedance state.

Does the device support input voltages higher than VCC?

Yes, the inputs include clamp diodes, allowing current-limiting resistors to be used for interfacing inputs to voltages in excess of VCC.