74ABT657DB,118 Equivalent & Substitute Parts

Part Overview

The 74ABT657DB,118 is a non-inverting transceiver logic IC manufactured by NXP USA Inc., designed for 8-bit data transmission with 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 24-SSOP surface mount package. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

74ABT657DB,118

NXP USA Inc.In Stock: 94474ABT657DB,118 Datasheet

Current PartRFQ

SN74ABT543ADBR

Texas InstrumentsIn Stock: 2685SN74ABT543ADBR Datasheet

Parametric EquivalentRFQ

SN74ABT646ADBR

Texas InstrumentsIn Stock: 3088SN74ABT646ADBR Datasheet

Parametric EquivalentRFQ

SN74ABT646DBR

Texas InstrumentsIn Stock: 1153SN74ABT646DBR Datasheet

Parametric EquivalentRFQ

SN74ABT652ADBR

Texas InstrumentsIn Stock: 954SN74ABT652ADBR Datasheet

Parametric EquivalentRFQ

SN74ABT657ADBR

Texas InstrumentsIn Stock: 2017SN74ABT657ADBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ABT657DB,118 are selected based on strict electrical and mechanical parameter equivalence within the 74ABT logic family. All identified substitutes maintain identical specifications 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: 32mA, 64mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 24-SSOP (0.209", 5.30mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts are manufactured by Texas Instruments and carry Active product status, ensuring long-term availability and supply chain reliability. The substitutes differ only in base product number designation (74ABT543, 74ABT646, 74ABT652, 74ABT657) and packaging format (Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

All five substitute parts listed are direct functional equivalents to the 74ABT657DB,118 and are suitable for replacement in applications requiring non-inverting transceiver logic with 8-bit capacity and 3-state output. The primary advantage of these substitutes is their Active product status, ensuring continued availability and manufacturing support from Texas Instruments.

Selection among the substitute options should be based on:

• Inventory availability and lead time requirements
• Packaging format preference (Tape & Reel format for all substitutes)
• Supply chain qualification and preferred vendor relationships
• Cost considerations across the available part numbers

All substitutes maintain full compliance with ROHS3 and REACH requirements, with identical electrical performance and thermal operating ranges. The 24-SSOP package footprint is consistent across all parts, enabling direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SN74ABT657ADBR directly replace the 74ABT657DB,118 in existing designs?

A: Yes. The SN74ABT657ADBR is electrically and mechanically equivalent to the 74ABT657DB,118. Both parts share identical logic type, bit capacity, output configuration, supply voltage range, operating temperature range, and 24-SSOP package dimensions. The primary difference is manufacturer (Texas Instruments vs. NXP) and product status (Active vs. Obsolete).

Q: What is the difference between the various Texas Instruments substitute part numbers?

A: The substitute parts differ only in their base product designations (74ABT543, 74ABT646, 74ABT652, 74ABT657). All maintain identical electrical specifications, output drive capability, voltage supply requirements, and thermal performance. The base product number reflects internal functional variations that do not affect compatibility with the original 74ABT657DB,118 application.

Q: Are all substitutes available in the same packaging format?

A: All five substitute parts are supplied in Tape & Reel (TR) packaging format. The original 74ABT657DB,118 does not specify packaging format in the provided data. The 24-SSOP package case dimensions are identical across all parts, ensuring PCB footprint compatibility.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the original 74ABT657DB,118.

Q: Why is the original part listed as Obsolete?

A: The 74ABT657DB,118 manufactured by NXP USA Inc. has reached end-of-life status. The Texas Instruments equivalents (SN74ABT657ADBR and related part numbers) remain in active production, providing long-term design support and supply continuity.