74ABT16541CSSCX Equivalent & Substitute Parts

Part Overview

The 74ABT16541CSSCX is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 8 bits per element and 3-state output capability. This device is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ABT16541CSSCX
Manufacturer	onsemi
Series	74ABT
Logic Type	Buffer, 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	48-BSSOP (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 74ABT16541CSSCX is determined by strict equivalence across the following critical parameters:

Logic Type: Buffer, 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)
Series: 74ABT
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts maintain identical electrical specifications and functional characteristics. Variations exist only in packaging format (Tape & Reel versus Tube) and package case dimensions (48-TSSOP versus 48-BSSOP), which do not affect electrical compatibility or functional performance.

Parameter Comparison

Parameter	74ABT16541CSSCX (onsemi)	SN74ABT16541ADGGR (TI)	SN74ABT16541ADL (TI)	SN74ABT16541ADLR (TI)
Series	74ABT	74ABT	74ABT	74ABT
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2
Number of Bits per Element	8	8	8	8
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)	48-TFSOP (0.240", 6.10mm Width)	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three Texas Instruments substitute parts (SN74ABT16541ADGGR, SN74ABT16541ADL, SN74ABT16541ADLR) are active products with identical electrical and functional specifications to the obsolete 74ABT16541CSSCX. Selection between these alternatives depends on packaging and compliance requirements:

SN74ABT16541ADL provides direct package compatibility (48-BSSOP) with the original part and is supplied in Tube packaging. This option minimizes PCB layout modifications.

SN74ABT16541ADLR offers identical electrical and package specifications to SN74ABT16541ADL but is supplied in Tape & Reel format, suitable for automated assembly processes.

SN74ABT16541ADGGR features a narrower package footprint (48-TFSOP, 0.240" width versus 0.295") and Tape & Reel packaging. This option requires PCB layout verification due to package case dimension differences but maintains full electrical compatibility.

All substitute parts carry ROHS3 compliance certification and REACH Unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT16541ADGGR be used as a direct replacement for 74ABT16541CSSCX?

A: SN74ABT16541ADGGR is electrically equivalent but uses a different package case (48-TFSOP versus 48-BSSOP). The narrower package width (0.240" versus 0.295") requires PCB footprint verification. Pin count and electrical specifications are identical.

Q: What is the difference between the three Texas Instruments substitutes?

A: All three parts are electrically identical. Differences are limited to packaging format and case dimensions. SN74ABT16541ADL and SN74ABT16541ADLR use the same 48-BSSOP package; SN74ABT16541ADGGR uses 48-TFSOP. SN74ABT16541ADL is supplied in Tube; the other two are supplied in Tape & Reel.

Q: Are there any compliance differences between the original and substitute parts?

A: The original 74ABT16541CSSCX does not specify RoHS status. All Texas Instruments substitutes are ROHS3 Compliant. All parts are REACH Unaffected and carry identical ECCN and HTSUS classifications.

Q: Which substitute should I select for new designs?

A: For new designs, select based on assembly process requirements. SN74ABT16541ADLR (Tape & Reel, 48-BSSOP) is recommended for automated assembly. SN74ABT16541ADL (Tube, 48-BSSOP) is suitable for manual or low-volume assembly. SN74ABT16541ADGGR requires PCB layout verification due to package case differences.

Q: Do all substitutes maintain the same electrical performance?

A: Yes. All substitute parts maintain identical output current (32mA, 64mA), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and functional specifications.

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