74ACT11245NT Equivalent & Substitute Parts

Part Overview

The 74ACT11245NT is a non-inverting transceiver IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This device operates across a 4.5V to 5.5V supply voltage range and is housed in a 24-pin DIP package for through-hole mounting.

The 74ACT11245NT is classified as obsolete. Finding equivalent substitute parts is necessary to support ongoing system maintenance, design updates, and procurement continuity where through-hole or surface-mount alternatives are required.

Substiute Parts

74ACT11245NT

Texas InstrumentsIn Stock: 81474ACT11245NT Datasheet

Current PartRFQ

74ACT11245DWR

Texas InstrumentsIn Stock: 89774ACT11245DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT11245NT is determined by the following critical parameters:

• Logic type: Transceiver, Non-Inverting
• Functional configuration: 1 element, 8 bits per element
• Output capability: 3-State
• Output current rating: 24mA (high and low)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Base product number: 74ACT11245

The 74ACT11245DWR is a direct functional equivalent manufactured by Texas Instruments. It maintains identical electrical specifications and logic functionality while differing in mounting technology and package form factor. The 74ACT11245DWR is housed in a 24-SOIC surface-mount package and is classified as an active product, making it suitable for new designs and ongoing procurement.

Parameter Comparison

Engineering Selection Recommendations

The 74ACT11245DWR is the manufacturer-recommended substitute for the 74ACT11245NT. Both devices are ROHS3 compliant and carry unlimited moisture sensitivity classification, ensuring equivalent environmental and regulatory compliance.

The primary distinction between these parts is packaging and product lifecycle status. The 74ACT11245NT uses through-hole DIP packaging suitable for breadboard prototyping and legacy PCB designs. The 74ACT11245DWR employs surface-mount SOIC packaging, which is standard for modern production boards and offers improved thermal characteristics and board density.

Selection between these parts depends on PCB design requirements and manufacturing capability. The 74ACT11245DWR is recommended for new designs and ongoing procurement due to its active product status and availability. The 74ACT11245NT remains suitable for maintenance and repair of existing through-hole assemblies where inventory permits.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT11245DWR directly replace the 74ACT11245NT in an existing circuit?

A: Electrical and functional compatibility is complete. The 74ACT11245DWR maintains identical logic specifications, output current ratings, supply voltage range, and operating temperature range. PCB layout modification is required due to package differences: DIP through-hole versus SOIC surface-mount. Adapter boards or redesign may be necessary depending on the application.

Q: What is the key difference between these two parts?

A: Both parts share the same base product number (74ACT11245) and identical electrical specifications. The 74ACT11245NT is packaged in 24-pin DIP for through-hole mounting, while the 74ACT11245DWR is packaged in 24-pin SOIC for surface-mount assembly. The 74ACT11245DWR is an active product; the 74ACT11245NT is obsolete.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry MSL Level 1 (unlimited), and share identical REACH and ECCN classifications. Regulatory and environmental compliance is equivalent.

Q: Which part should be selected for a new design?

A: The 74ACT11245DWR is the appropriate choice for new designs. It is an active product with ongoing manufacturer support and availability. Surface-mount SOIC packaging is standard in modern PCB manufacturing.

Q: Can the 74ACT11245NT be used if the 74ACT11245DWR is unavailable?

A: Electrical compatibility is complete if through-hole mounting can be accommodated in the PCB design. However, the 74ACT11245NT is classified as obsolete, and long-term availability cannot be assured. Procurement should prioritize the active 74ACT11245DWR.