74ABT541CMTCX Equivalent & Substitute Parts

Part Overview

The 74ABT541CMTCX is a non-inverting buffer logic IC manufactured by onsemi, designed for 8-bit buffering applications with 3-state output capability. This device operates across a 4.5V to 5.5V supply range and is housed in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	Buffer, 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)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ABT541CMTCX is determined by matching the following critical parameters: logic type (Buffer, Non-Inverting), number of elements (1), bits per element (8), output type (3-State), output current specifications (32mA high, 64mA low), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and surface mount mounting type. Package variations (20-TSSOP vs. 20-SSOP) are permitted within the substitute group, as both maintain equivalent electrical performance and pin compatibility for the core logic function. All identified substitutes are manufactured by Texas Instruments under the 74ABT541 base product number series and maintain full parametric equivalence.

Parameter Comparison

Parameter	74ABT541CMTCX (onsemi)	SN74ABT541BDBR (TI)	SN74ABT541BPW (TI)	SN74ABT541BIPWREP (TI)	SN74ABT541BIPWRQ1 (TI)	SN74ABT541BPWR (TI)
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	1	1	1	1	1	1
Number of Bits per Element	8	8	8	8	8	8
Output Type	3-State	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	32mA, 64mA	32mA, 64mA	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	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)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-SSOP (0.209", 5.30mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All Texas Instruments substitutes (SN74ABT541BDBR, SN74ABT541BPW, SN74ABT541BIPWREP, SN74ABT541BIPWRQ1, SN74ABT541BPWR) are active products with ROHS3 compliance, providing long-term availability and regulatory alignment compared to the obsolete onsemi 74ABT541CMTCX. Selection among these substitutes depends on packaging and qualification requirements:

SN74ABT541BPWR offers the highest inventory availability (101,900 pcs) and is suitable for standard commercial applications requiring 20-TSSOP packaging. SN74ABT541BIPWRQ1 is qualified to AEC-Q100 automotive standards and is appropriate for automotive-grade applications. SN74ABT541BDBR provides 20-SSOP packaging as an alternative footprint option. SN74ABT541BIPWREP and SN74ABT541BPWR are both available in tape and reel packaging formats for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT541BDBR be used as a direct replacement for 74ABT541CMTCX?

A: SN74ABT541BDBR is parametrically equivalent but uses 20-SSOP packaging (0.209" width) instead of 20-TSSOP (0.173" width). While both are 20-pin surface mount packages with identical pin assignments and electrical specifications, PCB layout modifications may be required due to the different package footprint dimensions.

Q: What is the difference between SN74ABT541BIPWRQ1 and the other Texas Instruments substitutes?

A: SN74ABT541BIPWRQ1 carries AEC-Q100 automotive qualification, making it suitable for automotive applications. All other substitutes are standard commercial-grade parts. Electrical and functional parameters are identical across all variants.

Q: Are all Texas Instruments substitutes ROHS3 compliant?

A: Yes, all five Texas Instruments substitute part numbers (SN74ABT541BDBR, SN74ABT541BPW, SN74ABT541BIPWREP, SN74ABT541BIPWRQ1, SN74ABT541BPWR) are ROHS3 compliant, providing environmental and regulatory compliance advantages over the original onsemi part.

Q: Which substitute offers the best availability?

A: SN74ABT541BPWR has the highest documented inventory at 101,900 pcs new original in stock, making it the preferred choice for applications requiring immediate or high-volume procurement.

Q: Do packaging differences affect electrical performance?

A: No. The 20-TSSOP and 20-SSOP packages maintain identical electrical specifications, pin assignments, and functional performance. Package selection is determined by PCB design constraints and manufacturing capabilities.

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