74ALVC164245ZQLR Equivalent & Substitute Parts

Part Overview

The 74ALVC164245ZQLR is a voltage level translator IC with bidirectional capability, designed for translating signals between different voltage domains. This device features 2 circuits with 8 channels per circuit in a 56-BGA Microstar Junior package. 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	74ALVC164245ZQLR
Manufacturer	Texas Instruments
Series	74ALVC
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	2
Channels per Circuit	8
Voltage - VCCA	2.3 V ~ 3.6 V
Voltage - VCCB	3 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	56-VFBGA
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74ALVC164245ZQLR is determined by the following critical parameters:

Bidirectional channel configuration with 2 circuits and 8 channels per circuit
Voltage translation capability between VCCA (2.3 V ~ 3.6 V) and VCCB (3 V ~ 5.5 V) ranges
Tri-state, non-inverted output type
Operating temperature range of -40°C ~ 85°C
Surface mount technology with compatible pinout and functional equivalence

The substitute parts listed maintain functional equivalence through matching circuit topology, channel configuration, and voltage translation specifications. Package form factors differ to accommodate modern manufacturing and availability constraints, but electrical performance remains compatible within the specified voltage and temperature parameters.

Parameter Comparison

Parameter	74ALVC164245ZQLR	SN74ALVC164245DGGR	74AVC16T245DGV-Q1J	74VCX163245MTDX
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.	onsemi
Series	74ALVC	74ALVC	74AVC	74VCX
Translator Type	Voltage Level	Voltage Level	Translation Transceiver	Translation Transceiver
Channel Type	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Number of Circuits	2	2	2	2
Channels per Circuit	8	8	8	8
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	3-State	3-State
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	56-VFBGA	48-TFSOP	48-TFSOP	48-TFSOP
Product Status	Obsolete	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74ALVC164245DGGR is the primary recommended substitute. This Texas Instruments part maintains identical electrical specifications and series lineage as the original 74ALVC164245ZQLR. It is currently in active production status, ensuring long-term availability and supply chain stability. The part is ROHS3 compliant and carries the same moisture sensitivity level classification. The transition from 56-BGA to 48-TSSOP packaging requires PCB layout modification but provides improved manufacturability and thermal performance characteristics.

74AVC16T245DGV-Q1J from Nexperia USA Inc. offers an alternative with extended operating temperature range (-40°C ~ 125°C) and automotive-grade qualification (AEC-Q100). This part is suitable for applications requiring higher temperature operation or automotive compliance. The 48-TFSOP package (0.173", 4.40mm width) differs slightly from the primary substitute, requiring design verification for board space constraints.

74VCX163245MTDX from onsemi is classified as obsolete and should be avoided for new designs despite current inventory availability. While functionally equivalent, its obsolete status presents long-term supply risk comparable to the original part.

Frequently Asked Questions (FAQ)

Q: Can the 74ALVC164245ZQLR be directly replaced with SN74ALVC164245DGGR without design changes?

A: Electrical functionality is fully compatible. However, the package change from 56-BGA to 48-TSSOP requires PCB layout redesign. Pin mapping must be verified against both datasheets to ensure correct signal routing.

Q: What is the primary difference between the 74ALVC and 74AVC series substitutes?

A: The 74ALVC series (SN74ALVC164245DGGR) maintains the original voltage specifications and operating temperature range. The 74AVC series (74AVC16T245DGV-Q1J) extends the operating temperature to 125°C and includes automotive qualification, making it suitable for higher-temperature or automotive applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts maintain ROHS3 compliance, matching the original part's environmental certification status.

Q: Why is the package size different between the original and substitute parts?

A: The 56-BGA Microstar Junior package is less common in current manufacturing. The 48-TSSOP package provides equivalent electrical performance with improved availability and thermal characteristics in modern production environments.

Q: Which substitute should be selected for new designs?

A: SN74ALVC164245DGGR is recommended for new designs due to active production status and direct series compatibility. If extended temperature operation is required, 74AVC16T245DGV-Q1J with automotive qualification is the appropriate choice.

Q: What is the moisture sensitivity level for substitute parts?

A: SN74ALVC164245DGGR maintains MSL 1 (Unlimited), identical to the original part. 74VCX163245MTDX carries MSL 2 (1 Year), requiring different handling and storage protocols.

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