SN74AS245DWR Equivalent & Substitute Parts

Part Overview

The SN74AS245DWR is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit bidirectional data transfer 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 part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SN74AS245DWR

Texas InstrumentsIn Stock: 3867SN74AS245DWR Datasheet

Current PartRFQ

SN74AS245DW

Texas InstrumentsIn Stock: 973SN74AS245DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AS245DWR 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
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Output High, Low: 15mA, 64mA
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

The SN74AS245DW qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction between the main part and its substitute is product status and packaging format, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS245DW is the manufacturer-recommended substitute for the obsolete SN74AS245DWR. Both parts maintain identical electrical specifications, thermal operating ranges, and mechanical package dimensions. The SN74AS245DW carries Active product status, ensuring continued availability and manufacturing support. Both components satisfy ROHS3 compliance requirements and carry equivalent moisture sensitivity ratings. Selection of the SN74AS245DW eliminates obsolescence risk while preserving full functional and electrical compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS245DW be used as a direct replacement for the SN74AS245DWR in existing designs?

A: Yes. The SN74AS245DW is electrically and mechanically identical to the SN74AS245DWR across all specified parameters, including logic function, output characteristics, supply voltage range, output current ratings, operating temperature, and 20-SOIC package dimensions. No circuit modifications are required.

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

A: The SN74AS245DWR is classified as obsolete, while the SN74AS245DW maintains Active product status. The SN74AS245DW is supplied in Tube packaging, whereas the SN74AS245DWR packaging format is not specified in the provided data.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry identical Moisture Sensitivity Level ratings (MSL 1 - Unlimited), and share the same REACH and ECCN classifications.

Q: What are the critical parameters that define substitution eligibility for this transceiver?

A: Substitution is determined by equivalence in logic type (Non-Inverting Transceiver), element count (1), bit width (8 bits), output configuration (3-State), supply voltage range (4.5V ~ 5.5V), output current specifications (15mA high, 64mA low), operating temperature range (0°C ~ 70°C), and package type (20-SOIC surface mount).

Q: Is the SN74AS245DW currently available?

A: Yes. The SN74AS245DW is classified as Active and maintains current manufacturing status with documented inventory availability.