SN74LVC16T245GQLR Equivalent & Substitute Parts

Part Overview

The SN74LVC16T245GQLR is a translation transceiver logic IC manufactured by Texas Instruments, designed for bidirectional signal translation in 2-element, 8-bit configurations with 3-state output capability. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 56-BGA Microstar Junior package presents specific form factor constraints that influence substitute selection.

Substiute Parts

SN74LVC16T245GQLR

Texas InstrumentsIn Stock: 836SN74LVC16T245GQLR Datasheet

Current PartRFQ

74ALVC164245DGG-QJ

Nexperia USA Inc.In Stock: 209874ALVC164245DGG-QJ Datasheet

MFR RecommendedRFQ

74AVC16T245DGV-Q1J

Nexperia USA Inc.In Stock: 357774AVC16T245DGV-Q1J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC16T245GQLR are selected based on functional equivalence in translation transceiver architecture while accommodating modern packaging and compliance standards. The substitution logic is determined by the following critical parameters:

Functional Requirements:

• 2-element, 8-bit per element configuration
• Bidirectional translation capability
• 3-state output functionality

Electrical Compatibility:

• Supply voltage range overlap with original specification (1.65V ~ 5.5V)
• Output current drive capability (minimum 12mA acceptable for modern applications)
• Operating temperature range (-40°C minimum maintained)

Physical & Compliance Constraints:

• Surface mount technology maintained
• Modern RoHS3 compliance preferred for new designs
• Automotive-grade qualification (AEC-Q100) available in substitutes

Package Consideration: The original 56-VFBGA package is replaced with 48-TSSOP in substitute parts, representing a reduction in pin count while maintaining functional equivalence through optimized pinout design.

Parameter Comparison

Engineering Selection Recommendations

74AVC16T245DGV-Q1J is the primary substitute for direct functional replacement. This part maintains the 2-element, 8-bit translation transceiver architecture with 3-state output. It is actively manufactured, RoHS3 compliant, and carries automotive-grade AEC-Q100 qualification. The extended operating temperature range (-40°C ~ 125°C) exceeds the original specification. The reduced output current (12mA vs. 32mA) is acceptable for modern low-power applications. The 48-TSSOP package requires PCB layout redesign but provides superior thermal characteristics and manufacturing reliability compared to the obsolete 56-VFBGA.

74ALVC164245DGG-QJ serves as an alternative for applications requiring dual independent supply voltage domains (VCCA and VCCB). This voltage level translator configuration provides enhanced flexibility for mixed-voltage system designs. It maintains RoHS3 compliance and AEC-Q100 qualification. The wider TFSOP package (6.10mm) may offer improved handling characteristics in manufacturing environments.

Both substitutes are actively produced, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the 74AVC16T245DGV-Q1J directly replace the SN74LVC16T245GQLR without design modifications?

A: Functional replacement is possible; however, PCB layout redesign is required due to package change from 56-VFBGA to 48-TSSOP. The pinout differs, necessitating schematic and layout updates. Electrical performance is compatible within the specified operating ranges.

Q: What is the significance of the reduced output current (12mA vs. 32mA) in the 74AVC16T245DGV-Q1J?

A: The 12mA output current is sufficient for standard logic-level signal translation in modern applications. If the original design requires 32mA drive capability for specific load conditions, this parameter must be evaluated against actual circuit requirements before substitution.

Q: Why does the 74ALVC164245DGG-QJ have separate VCCA and VCCB supply voltages?

A: The dual supply configuration enables independent voltage domain translation. VCCA operates at 1.5V ~ 3.6V while VCCB operates at 1.5V ~ 5.5V, allowing this device to interface between different voltage domains in a single package. This is beneficial for mixed-voltage system designs but requires separate power supply routing.

Q: Are both substitute parts qualified for automotive applications?

A: Yes. Both 74AVC16T245DGV-Q1J and 74ALVC164245DGG-QJ carry AEC-Q100 automotive qualification and are RoHS3 compliant, making them suitable for automotive and industrial applications requiring enhanced reliability standards.

Q: What are the package dimension differences between the substitutes?

A: The 74AVC16T245DGV-Q1J uses a 48-TFSOP package with 4.40mm width, while the 74ALVC164245DGG-QJ uses a 48-TFSOP package with 6.10mm width. Both are surface-mount packages but require different PCB footprints. The wider package may provide improved thermal dissipation and mechanical robustness.

Q: Is the extended operating temperature range (-40°C ~ 125°C) of the substitutes a concern?

A: No. The extended range is advantageous, providing greater operational margin. If the original application operates within -40°C ~ 85°C, the substitute parts will perform within or exceed those specifications.