74ABT16541CSSC Equivalent & Substitute Parts

Part Overview

The 74ABT16541CSSC 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 designed for signal buffering applications requiring 5.5V operation with 32mA/64mA output drive capability. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ABT16541CSSC
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 74ABT16541CSSC 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
Base Product Number: 74ABT16541

All identified substitute parts maintain identical electrical specifications and functional characteristics. Differences exist only in packaging format (Tape & Reel versus Tube) and product status (Active versus Obsolete). These packaging variations do not affect electrical compatibility or circuit performance.

Parameter Comparison

Parameter	74ABT16541CSSC (onsemi)	SN74ABT16541ADGGR (TI)	SN74ABT16541ADLR (TI)	SN74ABT16541ADL (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
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, SN74ABT16541ADLR, SN74ABT16541ADL) are electrically and functionally equivalent to the obsolete 74ABT16541CSSC. Selection among these substitutes should be based on packaging and supply requirements:

SN74ABT16541ADGGR: Supplied in Tape & Reel format with 48-TFSOP package (0.240" width). This variant offers the narrowest package footprint and is suitable for high-volume automated assembly operations.

SN74ABT16541ADLR: Supplied in Tape & Reel format with 48-BSSOP package (0.295" width), matching the original package dimensions of the 74ABT16541CSSC. This option provides direct package compatibility with existing PCB layouts.

SN74ABT16541ADL: Supplied in Tube packaging with 48-BSSOP package (0.295" width). This variant is appropriate for lower-volume applications or manual assembly processes.

All substitute parts carry Active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT16541ADGGR be used as a direct replacement for 74ABT16541CSSC?

A: SN74ABT16541ADGGR is electrically equivalent but uses a different package format (48-TFSOP, 0.240" width versus 48-BSSOP, 0.295" width). PCB layout modifications are required for this substitution.

Q: Which substitute part maintains the original package dimensions?

A: Both SN74ABT16541ADLR and SN74ABT16541ADL use the 48-BSSOP package (0.295" width), matching the original 74ABT16541CSSC package footprint. The difference between these two parts is packaging format: Tape & Reel versus Tube.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three Texas Instruments substitutes (SN74ABT16541ADGGR, SN74ABT16541ADLR, SN74ABT16541ADL) are ROHS3 compliant. The original onsemi part does not specify RoHS status.

Q: What is the difference between the three substitute parts?

A: All three parts are electrically identical. Differences are limited to packaging format and package case dimensions. SN74ABT16541ADGGR uses 48-TFSOP (narrower), while SN74ABT16541ADLR and SN74ABT16541ADL both use 48-BSSOP (wider). SN74ABT16541ADLR is supplied in Tape & Reel; SN74ABT16541ADL is supplied in Tube.

Q: Can these parts be used interchangeably in the same circuit?

A: Yes, all substitute parts are electrically interchangeable. Circuit performance and electrical characteristics remain identical across all variants. Only physical placement on the PCB may differ due to package dimensions.

Q: What is the current availability status of these substitutes?

A: All three Texas Instruments substitutes carry Active product status, ensuring ongoing availability and manufacturing support. The original 74ABT16541CSSC is classified as Obsolete.

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