74ABT16543CSSCX Equivalent & Substitute Parts

Part Overview

The 74ABT16543CSSCX is a non-inverting transceiver IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. This 56-SSOP surface mount device operates across a 4.5V to 5.5V supply range and is rated for -40°C to 85°C operating temperature. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74ABT16543CSSCX

onsemiIn Stock: 401974ABT16543CSSCX Datasheet

Current PartRFQ

SN74ABT16543DGGR

Texas InstrumentsIn Stock: 2087SN74ABT16543DGGR Datasheet

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SN74ABT16543DL

Texas InstrumentsIn Stock: 1977SN74ABT16543DL Datasheet

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CY74FCT16543CTPVCT

Texas InstrumentsIn Stock: 1104CY74FCT16543CTPVCT Datasheet

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CY74FCT16646CTPVCT

Texas InstrumentsIn Stock: 1105CY74FCT16646CTPVCT Datasheet

Parametric EquivalentRFQ

CY74FCT16652ATPVCT

Texas InstrumentsIn Stock: 2533CY74FCT16652ATPVCT Datasheet

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SN74ABT16470DLR

Texas InstrumentsIn Stock: 939SN74ABT16470DLR Datasheet

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SN74ABT16543DLR

Texas InstrumentsIn Stock: 3222SN74ABT16543DLR Datasheet

Parametric EquivalentRFQ

SN74ABT16646DLR

Texas InstrumentsIn Stock: 2359SN74ABT16646DLR Datasheet

Parametric EquivalentRFQ

SN74ABT16652DLR

Texas InstrumentsIn Stock: 3414SN74ABT16652DLR Datasheet

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SN74ABT16657DLR

Texas InstrumentsIn Stock: 3382SN74ABT16657DLR Datasheet

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SN74ABT16952DLR

Texas InstrumentsIn Stock: 6163SN74ABT16952DLR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ABT16543CSSCX is determined by strict equivalence across the following electrical and mechanical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 2
• 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)
• Mounting Type: Surface Mount
• Package / Case: 56-BSSOP (0.295", 7.50mm Width)

Substitute parts are grouped into two categories: direct functional equivalents from Texas Instruments (SN74ABT series variants) and parametric equivalents from the 74FCT series. All listed substitutes maintain identical electrical performance and package specifications, differing only in product status, packaging format (tape & reel, cut tape, or tube), and manufacturer compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, SN74ABT16543DLR (Texas Instruments) is the primary recommended substitute. This part maintains active product status, ROHS3 compliance, and identical electrical and mechanical specifications to the obsolete 74ABT16543CSSCX. It is available in tape & reel packaging with 3200 pieces in stock.

SN74ABT16543DGGR provides an alternative with active status and ROHS3 compliance, packaged in 56-TSSOP format. This variant is suitable for applications where the slightly narrower package width (6.10mm versus 7.50mm) is acceptable.

SN74ABT16543DL offers the same electrical performance and 56-SSOP package in tube packaging format, with active product status and ROHS3 compliance.

For cost-sensitive applications where product status is less critical, the 74FCT series variants (CY74FCT16543CTPVCT, CY74FCT16646CTPVCT, CY74FCT16652ATPVCT) provide parametric equivalence with ROHS3 compliance, though these are listed as obsolete.

SN74ABT16646DLR and SN74ABT16652DLR are functionally equivalent alternatives with active status and ROHS3 compliance, available in cut tape and tape & reel formats respectively.

SN74ABT16470DLR is listed as discontinued at DiGi Electronics and should be considered only when other active alternatives are unavailable.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT16543DGGR replace 74ABT16543CSSCX directly?

A: Yes. Both parts share identical electrical specifications (2 elements, 8 bits per element, 3-state output, 32mA/64mA output current, 4.5V–5.5V supply, -40°C to 85°C operating range). The primary difference is package format: SN74ABT16543DGGR uses 56-TSSOP (6.10mm width) while the original uses 56-SSOP (7.50mm width). PCB layout compatibility must be confirmed before substitution.

Q: What is the difference between SN74ABT16543DL and SN74ABT16543DLR?

A: Both parts are electrically identical and use the same 56-SSOP package. The difference is packaging format: DL is supplied in tube packaging, while DLR is supplied in tape & reel format. Selection depends on assembly process requirements and quantity needs.

Q: Are the 74FCT series parts (CY74FCT16543CTPVCT, etc.) suitable replacements?

A: Yes, parametrically. All 74FCT variants listed maintain identical electrical specifications and 56-SSOP packaging. However, these parts are obsolete. They should be used only when active 74ABT alternatives are unavailable or when existing inventory must be consumed.

Q: Why is SN74ABT16470DLR listed if it is discontinued?

A: SN74ABT16470DLR meets all electrical and mechanical substitution criteria but is discontinued at DiGi Electronics. It is included for reference in applications where legacy inventory exists or where alternative sourcing channels may still carry stock.

Q: What compliance certifications apply to all substitute parts?

A: All listed substitutes carry ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory profile. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all variants.

Q: Can I use SN74ABT16646DLR or SN74ABT16652DLR as substitutes?

A: Yes. Both parts are functionally equivalent with identical electrical specifications, 56-SSOP packaging, active product status, and ROHS3 compliance. These are valid alternatives with strong inventory availability (2300 and 3400 pieces respectively).