SN74F657DWR Equivalent & Substitute Parts

Part Overview

The SN74F657DWR is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments, designed for 8-bit data transmission with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 24-SOIC surface mount package.

The SN74F657DWR is classified as obsolete, which necessitates identification of equivalent substitute components for new designs or production continuity. Active alternatives with identical electrical and mechanical specifications are available to ensure seamless integration into existing circuit designs.

Substiute Parts

SN74F657DWR

Texas InstrumentsIn Stock: 1008SN74F657DWR Datasheet

Current PartRFQ

SN74F657DW

Texas InstrumentsIn Stock: 872SN74F657DW Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F657DWR 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 Specifications: Output High (3mA, 24mA) and Output Low (12mA, 64mA)
• Voltage Supply Range: 4.5V ~ 5.5V
• Operating Temperature Range: 0°C ~ 70°C (TA)
• Package / Case: 24-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

The SN74F657DW meets all substitution criteria as a direct equivalent, with identical electrical characteristics and mechanical specifications. The primary distinction is product status: the SN74F657DW is active, whereas the SN74F657DWR is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SN74F657DW is the direct substitute for the SN74F657DWR. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The SN74F657DW maintains active product status with Texas Instruments, ensuring ongoing availability and supply chain continuity.

For applications currently using the SN74F657DWR, transition to the SN74F657DW provides equivalent electrical performance and mechanical compatibility without circuit redesign. The active status of the SN74F657DW supports long-term production requirements and reduces obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can the SN74F657DW directly replace the SN74F657DWR in existing designs?

A: Yes. The SN74F657DW is a direct substitute with identical electrical specifications, output characteristics, supply voltage range, operating temperature range, and 24-SOIC package dimensions. No circuit modifications are required.

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

A: The SN74F657DWR is obsolete, while the SN74F657DW is active. Both components share identical functional and mechanical specifications.

Q: Are there packaging differences between the SN74F657DWR and SN74F657DW?

A: Both components use the 24-SOIC (0.295", 7.50mm Width) surface mount package. The SN74F657DWR is supplied in standard packaging, while the SN74F657DW is supplied in tube packaging. Pin configuration and footprint are identical.

Q: Do these parts meet current compliance standards?

A: Yes. Both the SN74F657DWR and SN74F657DW are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: logic type (non-inverting transceiver), element count (1), bit count per element (8), output type (3-state), current specifications (3mA/24mA high, 12mA/64mA low), supply voltage (4.5V–5.5V), operating temperature (0°C–70°C), and package type (24-SOIC surface mount).