74HCT2G34GV,125

Overview

The Nexperia 74HCT2G34GV,125 is a dual buffer gate from the HCT logic family, housed in a SC-74 (TSOP6) plastic surface-mounted package with six leads. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range of -40 °C to +125 °C. The device features TTL-level inputs and non-inverting outputs. At 4.5 V, propagation delay is typically 18 ns with a maximum of 29 ns at -40 °C to +125 °C. Static characteristics include low input leakage current and compliance with JEDEC standards.

Feature Summary

• Accepts TTL-level input signals for direct interfacing with Transistor-Transistor Logic systems.
• Provides balanced propagation delays between rising and falling signal transitions.
• Includes input clamp diodes to allow safe interface with voltages exceeding the supply rail using current limiting resistors.

Applications

• Signal buffering in digital logic circuits
• Level shifting between TTL and CMOS domains
• Data line isolation in high-speed communication interfaces

Procurement Notes

Verify that the ordering suffix '125' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm the SC-74 package variant matches the footprint constraints of the target PCB design. Ensure the procurement documentation explicitly references the HCT logic family to distinguish it from HC variants with different voltage thresholds.

Selection Notes

Select this component when TTL-compatible input thresholds are mandatory within a system powered by a standard 5 V rail. The wide operating temperature range up to +125 °C makes it suitable for industrial environments where thermal stability is critical. Verify that the single-function buffer topology meets the circuit requirements without necessitating additional inversion stages.

Part Context

This part belongs to the Nexperia 74HCT2G34 series of dual buffer gates. It shares functional similarities with the 74HC2G34 but utilizes HCT technology to ensure compatibility with legacy TTL logic families. The GV suffix specifically identifies the SC-74 package style, distinguishing it from the GW variant which utilizes a TSSOP6 housing.

Replacement Considerations

The 74HCT2G34GW,125 serves as a direct functional substitute, differing only in the SC-88/TSSOP6 package geometry compared to the SC-74/TSOP6 form factor of the GV version. Electrical specifications remain identical across both package options.

FAQ

Can the 74HCT2G34GV handle input voltages higher than VCC?

Yes, the inputs include clamp diodes, allowing them to interface with voltages exceeding VCC provided current limiting resistors are used.

What is the input logic level specification for this device?

As an HCT device, it accepts TTL-level input signals, ensuring compatibility with standard Transistor-Transistor Logic outputs.