74ACT11245PWE4 Equivalent & Substitute Parts

Part Overview

The 74ACT11245PWE4 is a non-inverting transceiver IC designed for 8-bit data bus applications with 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 24-TSSOP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74ACT11245PWE4

Texas InstrumentsIn Stock: 106574ACT11245PWE4 Datasheet

Current PartRFQ

74ACT11245PWR

Texas InstrumentsIn Stock: 99674ACT11245PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT11245PWE4 is determined by strict equivalence across the following critical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount

The 74ACT11245PWR meets all substitution criteria. The primary distinction between the main part and its substitute is the packaging format: the 74ACT11245PWE4 is supplied in tube packaging, while the 74ACT11245PWR is supplied in Tape & Reel (TR) format. Both parts share identical electrical specifications, pinout configuration, and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 74ACT11245PWR is the manufacturer-recommended substitute for the obsolete 74ACT11245PWE4. Both parts maintain identical electrical performance, thermal operating range, and mechanical compatibility within the 24-TSSOP package footprint.

The 74ACT11245PWR carries Active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification, satisfying regulatory and environmental requirements.

Selection between these parts is determined by procurement and assembly requirements. The 74ACT11245PWR in Tape & Reel format is suitable for high-volume automated assembly operations. For applications requiring tube packaging or lower-volume procurement, the 74ACT11245PWE4 remains available while stock exists, though the Active status of the 74ACT11245PWR provides superior long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT11245PWR directly replace the 74ACT11245PWE4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The 24-TSSOP pinout, signal timing, voltage specifications, and output drive characteristics are equivalent. Substitution requires no circuit modifications.

Q: What is the difference between tube and Tape & Reel packaging?

A: Tube packaging supplies individual components in plastic tubes, suitable for manual assembly or low-volume pick-and-place operations. Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for high-speed automated assembly equipment. The electrical and functional characteristics of the component remain unchanged.

Q: Why is the 74ACT11245PWE4 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 74ACT11245PWR, with Active status, represents the current production equivalent and is the recommended path for new designs and ongoing supply.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both parts operate identically across the -40°C to 85°C temperature range with 4.5V to 5.5V supply voltage. Output drive capability (24mA high and low) and 3-state logic behavior are identical.

Q: What compliance certifications apply to both parts?

A: Both the 74ACT11245PWE4 and 74ACT11245PWR are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is classified as 1 (unlimited), indicating no special moisture control requirements during storage or handling.