74HCT3G34DP,125

Overview

The Nexperia 74HCT3G34DP,125 is a triple buffer gate housed in an SOT505-2 (TSSOP8) package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features TTL input levels, clamp diodes for overvoltage interfacing, and ESD protection exceeding 2000 V (HBM). Static characteristics include a maximum input leakage current of ±1.0 μA at 5.5 V and a quiescent supply current of 20 μA. Dynamic performance specifies a propagation delay of 29 ns maximum at 4.5 V.

Feature Summary

• Triple non-inverting buffer configuration with three independent data inputs and outputs
• TTL-compatible input logic levels ensuring compatibility with standard digital systems
• Integrated input clamp diodes allowing safe interfacing with voltages exceeding the supply rail
• Robust electrostatic discharge protection meeting JEDEC Class 2 and Class C3 standards

Applications

• Signal buffering in mixed-voltage environments requiring level translation
• Line driving applications for improving signal integrity on PCB traces
• General-purpose logic buffering for high-no immunity requirements

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the application environment remains within the specified temperature and voltage limits. Ensure proper handling procedures are followed due to the sensitivity of CMOS inputs. Cross-reference the marking code T34 to validate authenticity upon receipt.

Selection Notes

Select this component when TTL-level inputs are required alongside a wide operating temperature range. The HCT series is appropriate for systems interfacing with legacy TTL logic. Consider the TSSOP8 package for space-constrained surface-mount designs. Verify that the output drive capability meets the load requirements of the connected circuitry.

Part Context

This part belongs to the Nexperia 74HCT3G34 family of triple buffer gates. It shares functional similarities with the 74HC3G34 but differs in input threshold specifications to support TTL logic levels. The DP suffix indicates the TSSOP8 plastic thin shrink small outline package. It is designed for general-purpose digital logic applications requiring reliable signal transmission.

Replacement Considerations

The 74HC3G34DP,125 serves as a pin-compatible alternative if CMOS input levels are acceptable. Other Nexperia triple buffers in the same package may be considered if electrical parameters align with specific design constraints.

FAQ

What is the marking code for the 74HCT3G34DP?

The marking code for the 74HCT3G34DP is T34.

How does the 74HCT3G34 handle input voltages higher than VCC?

The device includes input clamp diodes, which allow the use of current-limiting resistors to interface inputs to voltages exceeding VCC safely.