SN74ACT245NS Equivalent & Substitute Parts

Part Overview

The SN74ACT245NS is a non-inverting transceiver IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOIC surface mount package.

The SN74ACT245NS has been discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains system functionality for applications requiring this logic transceiver configuration.

Substiute Parts

SN74ACT245NS

Texas InstrumentsIn Stock: 768SN74ACT245NS Datasheet

Current PartRFQ

SN74ACT245NSR

Texas InstrumentsIn Stock: 2785SN74ACT245NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ACT245NS is determined by strict equivalence across the following critical parameters:

• Logic type and function (non-inverting transceiver)
• Bit width and element count (8-bit, 1 element)
• Output configuration (3-state)
• Output current specifications (24mA high and low)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (-40°C ~ 85°C)
• Physical package dimensions (20-SOIC, 0.209" width, 5.30mm)
• Series classification (74ACT)
• Compliance certifications (ROHS3, MSL Level 1)

Parts meeting all these criteria are direct functional and pin-compatible substitutes. Packaging format (tube versus cut tape/reel) does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74ACT245NSR is a direct substitute for the SN74ACT245NS. Both parts are manufactured by Texas Instruments and share identical electrical specifications, pin configuration, and physical package dimensions. The primary distinction is product status: the SN74ACT245NSR maintains active availability, while the original part number has been discontinued.

Both parts carry ROHS3 compliance and MSL Level 1 rating, confirming equivalent environmental and handling requirements. Selection between these part numbers should be based on current inventory availability and supply chain requirements rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT245NSR be used as a direct replacement for the SN74ACT245NS?

A: Yes. Both parts are electrically and mechanically identical. They share the same pin configuration, electrical characteristics, and 20-SOIC package dimensions. The difference is packaging format (tube versus cut tape/reel) and product status.

Q: Are there any differences in performance between these part numbers?

A: No. Both parts deliver identical output current (24mA), operate across the same supply voltage range (4.5V ~ 5.5V), and function across the same temperature range (-40°C ~ 85°C).

Q: Does the packaging format affect compatibility?

A: No. Tube and cut tape/reel packaging formats contain the same die and lead frame. Packaging affects only handling and storage procedures, not electrical or mechanical performance.

Q: What compliance certifications apply to both parts?

A: Both the SN74ACT245NS and SN74ACT245NSR are ROHS3 compliant and carry MSL Level 1 rating, indicating unlimited moisture sensitivity protection.

Q: Why is the original part number discontinued?

A: Product discontinuation decisions are made by manufacturers and distributors based on market demand and supply chain optimization. The SN74ACT245NSR remains in active production and provides equivalent functionality.