74HCT30D,653

Overview

The Nexperia 74HCT30D,653 is an 8-input NAND gate in a 14-lead SO plastic small outline package (SOT108-1). It operates on a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features TTL-level input compatibility and includes input clamp diodes for interfacing with voltages exceeding VCC. Static characteristics specify a maximum propagation delay of 42 ns at 4.5 V and a low-level output voltage of 0.4 V max at 4.0 mA load current.

Feature Summary

• Provides eight-input NAND logic functionality within a single integrated circuit.
• Features TTL-compatible input levels for direct interfacing with standard logic families.
• Includes input clamp diodes to allow the use of current limiting resistors for voltage translation.
• Offers high noise immunity and low power dissipation typical of CMOS technology.

Applications

• Digital logic circuits requiring multi-input NAND operations
• Interface modules utilizing current limiting resistors for voltage level shifting
• Industrial control systems operating across extended temperature ranges

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number may correspond to different physical packages such as TSSOP. Confirm the operational temperature grade aligns with system requirements, noting that this specific variant supports the full industrial range up to 125 °C. Ensure compliance with relevant JEDEC standards for your application environment.

Selection Notes

Select this component when an 8-input NAND gate is required with TTL-compatible inputs. The HCT series ensures compatibility with 5 V logic systems while maintaining CMOS power efficiency. Consider the SO14 package dimensions if board space allows for a wider footprint compared to shrink packages. Verify that the input clamp diode feature meets the interface design needs for voltages above VCC.

Part Context

This component belongs to the Nexperia 74HCT30 family of 8-input NAND gates. It shares functional similarities with other members of the 74HCT logic series but is distinguished by its specific eight-input configuration and SO14 packaging. The device complements other logic gates in digital design applications where complex boolean functions are implemented using discrete components.

Replacement Considerations

Direct replacements include the 74HC30D,653, which offers identical pinout and form factor but utilizes HC logic levels instead of TTL-compatible HCT levels. Designers must verify input voltage thresholds when substituting between HC and HCT variants to ensure proper logic signaling.

FAQ

What is the function of the input clamp diodes?

The input clamp diodes enable the use of current limiting resistors to interface inputs to voltages in excess of VCC without damaging the device.

Does this device support automotive applications?

No, unless expressly stated otherwise in the data sheet, this product is not suitable for automotive use and is not qualified according to automotive testing requirements.