SN74LVC2952APW Equivalent & Substitute Parts

Part Overview

The SN74LVC2952APW is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments, designed for 8-bit data transmission with 3-state output capability. Operating across a supply voltage range of 1.65V to 3.6V, this component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Series	74LVC
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	24-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC2952APW is determined by strict alignment across the following critical parameters: logic type (non-inverting transceiver), number of elements (1), bits per element (8), output type (3-state), output current capability (24mA high and low), supply voltage range (1.65V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and surface mount configuration. All identified substitutes maintain these electrical and mechanical specifications, ensuring functional compatibility within the 74LVC series architecture.

Parameter Comparison

Parameter	SN74LVC2952APW	SN74LVC2952ADBR	SN74LVC543APW	SN74LVC646APW	SN74LVC652APW
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Series	74LVC	74LVC	74LVC	74LVC	74LVC
Logic Type	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting
Number of Elements	1	1	1	1	1
Number of Bits per Element	8	8	8	8	8
Output Type	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	24-TSSOP (0.173", 4.40mm Width)	24-SSOP (0.209", 5.30mm Width)	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

The SN74LVC2952APW is classified as obsolete, necessitating transition to active alternatives. Among the identified substitutes, SN74LVC2952ADBR represents the manufacturer-recommended direct replacement, maintaining identical electrical specifications while differing only in packaging format (24-SSOP versus 24-TSSOP). This variant is actively produced and stocked, ensuring long-term availability.

SN74LVC543APW, SN74LVC646APW, and SN74LVC652APW are parametric equivalents with active product status. These alternatives maintain all critical electrical parameters and operate within identical supply voltage and temperature ranges. All substitute parts comply with ROHS3 and REACH requirements, matching the compliance profile of the original component.

For applications requiring identical package geometry (24-TSSOP), SN74LVC543APW, SN74LVC646APW, and SN74LVC652APW are suitable selections. For applications where package footprint flexibility exists, SN74LVC2952ADBR in 24-SSOP packaging provides the manufacturer-recommended path forward.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC2952ADBR replace SN74LVC2952APW directly?

A: SN74LVC2952ADBR is the manufacturer-recommended substitute. Electrical specifications are identical. The primary difference is packaging: SN74LVC2952ADBR uses 24-SSOP (0.209", 5.30mm width) versus the original 24-TSSOP (0.173", 4.40mm width). PCB layout modifications are required to accommodate the different package footprint.

Q: What is the difference between SN74LVC2952ADBR and SN74LVC543APW?

A: Both are parametric equivalents with identical electrical specifications. SN74LVC2952ADBR is the direct manufacturer recommendation for the obsolete SN74LVC2952APW. SN74LVC543APW is an alternative within the same 74LVC series. Both maintain 24-pin surface mount configuration and 1.65V ~ 3.6V supply voltage operation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitutes—SN74LVC2952ADBR, SN74LVC543APW, SN74LVC646APW, and SN74LVC652APW—are ROHS3 compliant and REACH unaffected, matching the compliance status of the original SN74LVC2952APW.

Q: What is the moisture sensitivity level for these components?

A: All parts in this substitution group, including the original and all substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I use these substitutes in new designs?

A: Yes. SN74LVC2952ADBR, SN74LVC543APW, SN74LVC646APW, and SN74LVC652APW all carry active product status and are suitable for new design implementations. The original SN74LVC2952APW is obsolete and should not be specified for new applications.

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