74ABT16500CSSCX Universal Bus Transceiver 18-Bit Equivalent & Substitute Parts

Part Overview

The 74ABT16500CSSCX is a universal bus transceiver IC designed for 18-bit bidirectional data transfer applications. Manufactured by onsemi in a 56-SSOP surface mount package, this component operates across the 4.5V to 5.5V supply voltage range with an operating temperature range of -40°C to 85°C. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications where 74ABT16500 series functionality is required.

Substiute Parts

74ABT16500CSSCX

onsemiIn Stock: 105974ABT16500CSSCX Datasheet

Current PartRFQ

SN74ABT162500DL

Texas InstrumentsIn Stock: 854SN74ABT162500DL Datasheet

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SN74ABT16500BDGGR

Texas InstrumentsIn Stock: 3860SN74ABT16500BDGGR Datasheet

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SN74ABT16500BDL

Texas InstrumentsIn Stock: 2205SN74ABT16500BDL Datasheet

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SN74ABT16500BDLR

Texas InstrumentsIn Stock: 3792SN74ABT16500BDLR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ABT16500CSSCX is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Logic Type: Universal Bus Transceiver
• Number of Circuits: 18-Bit
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 56-BSSOP or 56-TFSOP (both 56-pin configurations)
• Supplier Device Package: 56-SSOP or 56-TSSOP

All substitute parts listed maintain compatibility across these core parameters. Variations in output current specifications (3mA vs. 32mA for output high current) and packaging format (Tube vs. Tape & Reel) do not affect functional substitution but may impact procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended):

SN74ABT16500BDL and SN74ABT16500BDLR are the most direct functional equivalents to the 74ABT16500CSSCX. Both are manufactured by Texas Instruments, maintain active product status, and are ROHS3 compliant. These parts share identical package specifications (56-BSSOP) and electrical parameters. Selection between these two depends on procurement requirements: SN74ABT16500BDL is supplied in Tube packaging, while SN74ABT16500BDLR is supplied in Tape & Reel format for automated assembly.

Alternative Substitute (Package Variant):

SN74ABT16500BDGGR provides functional equivalence with a package variant (56-TFSOP, 0.240" width vs. 0.295" width). This part is suitable only if PCB layout accommodates the narrower package footprint. Texas Instruments active status and ROHS3 compliance apply.

Secondary Substitute (Different Base Number):

SN74ABT162500DL represents a variant within the 74ABT transceiver family. While functionally compatible across core parameters, this part carries a different base product number (74ABT162500 vs. 74ABT16500). Electrical specifications align with supply voltage and operating temperature requirements. This option is suitable when the specific base number variant is acceptable for the application.

All substitute parts maintain REACH Unaffected status and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT16500BDGGR replace 74ABT16500CSSCX directly on existing PCBs?

A: SN74ABT16500BDGGR is functionally equivalent but uses a 56-TFSOP package (0.240" width) instead of the 56-BSSOP package (0.295" width) of the original part. PCB footprint compatibility must be verified before substitution. If the PCB is designed for 56-BSSOP, use SN74ABT16500BDL or SN74ABT16500BDLR instead.

Q: What is the difference between SN74ABT16500BDL and SN74ABT16500BDLR?

A: Both parts are electrically and mechanically identical. The difference is packaging format: SN74ABT16500BDL is supplied in Tube packaging for manual handling, while SN74ABT16500BDLR is supplied in Tape & Reel format for automated pick-and-place assembly. Select based on your assembly process requirements.

Q: Why does SN74ABT162500DL show different output current specifications?

A: SN74ABT162500DL lists dual current specifications (32mA, 64mA; 12mA, 12mA) compared to the original part (3mA, 64mA). This reflects different output drive capability configurations within the 74ABT transceiver family. Both maintain the same supply voltage (4.5V ~ 5.5V) and operating temperature range (-40°C ~ 85°C), ensuring functional compatibility for 18-bit universal bus transceiver applications.

Q: Are all substitute parts ROHS3 compliant?

A: All Texas Instruments substitute parts listed (SN74ABT162500DL, SN74ABT16500BDGGR, SN74ABT16500BDL, SN74ABT16500BDLR) are ROHS3 compliant. The original onsemi part does not specify RoHS status. Verify RoHS compliance requirements for your application before final selection.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. All parts in this comparison share this rating, meaning standard storage and handling procedures apply without special moisture control requirements.

Q: Can I use these substitutes in new designs?

A: Yes. All Texas Instruments substitute parts maintain active product status, ensuring long-term availability and support. The original onsemi part is obsolete, making these active alternatives suitable for both replacement and new design applications.