PI74AVC164245AEX Equivalent & Substitute Parts

Part Overview

The PI74AVC164245AEX is a voltage level translator IC manufactured by Diodes Incorporated, designed for bidirectional translation between two different voltage domains. This 48-TSSOP package device features 2 circuits with 8 channels per circuit, supporting VCCA at 2.3V–2.7V and VCCB at 3V–3.6V with tri-state, non-inverted output. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74AVC164245AEX
Manufacturer	Diodes Incorporated
Series	74AVC
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	2
Channels per Circuit	8
Voltage - VCCA	2.3V – 2.7V
Voltage - VCCB	3V – 3.6V
Output Type	Tri-State, Non-Inverted
Operating Temperature	-40°C to 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74AVC164245AEX is determined by the following critical parameters:

Functional Requirements:

Bidirectional voltage level translation capability
2 circuits with 8 channels per circuit configuration
Tri-state, non-inverted output topology

Electrical Compatibility:

Voltage supply ranges must accommodate or exceed the original VCCA (2.3V–2.7V) and VCCB (3V–3.6V) specifications
Operating temperature range of -40°C to 85°C minimum

Physical Compatibility:

48-pin TFSOP or TSSOP package (0.240", 6.10mm width)
Surface mount technology

Compliance Requirements:

ROHS3 compliance
MSL rating of 1 or equivalent

Substitute parts are grouped into three categories: direct equivalents (same voltage specifications), compatible alternatives (broader voltage ranges), and upgraded variants (enhanced temperature or automotive qualification).

Parameter Comparison

Part Number	Manufacturer	Series	VCCA Range	VCCB Range	Circuits / Channels	Output Type	Temp Range	Package	Status
PI74AVC164245AEX	Diodes Inc.	74AVC	2.3V – 2.7V	3V – 3.6V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-TFSOP	Obsolete
74FCT164245TPAG	Renesas	74FCT	2.7V – 3.6V	4.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-TFSOP	Active
74FCT164245TPAG8	Renesas	74FCT	2.7V – 3.6V	4.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-TFSOP	Active
SN74AVC16T245DGGR	Texas Instruments	74AVC	1.2V – 3.6V	1.2V – 3.6V	2 / 8	3-State	-40 to 85°C	48-TFSOP	Active
SN74LVC16T245DGGR	Texas Instruments	74LVC	1.65V – 5.5V	1.65V – 5.5V	2 / 8	3-State	-40 to 85°C	48-TFSOP	Active
74ALVC164245DGG-QJ	Nexperia	74ALVC	1.5V – 3.6V	1.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 125°C	48-TFSOP	Active
CLVCH16T245MDGGREP	Texas Instruments	74LVCH	1.65V – 5.5V	1.65V – 5.5V	2 / 8	3-State	-40 to 85°C	48-TFSOP	Active
74ALVC164245PAG8	IDT	74ALVC	2.7V – 3.6V	4.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-TFSOP	Active
74AVCB164245GRE4	Texas Instruments	74AVCB	1.4V – 3.6V	1.4V – 3.6V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-TFSOP	Discontinued
74FCT164245TPVG	Renesas	74FCT	2.7V – 3.6V	4.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-BSSOP	Active
74FCT164245TPVG8	Renesas	74FCT	2.7V – 3.6V	4.5V – 5.5V	2 / 8	Tri-State, Non-Inv	-40 to 85°C	48-BSSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

The 74FCT164245TPAG8 (Renesas) and 74ALVC164245PAG8 (IDT) are the most direct functional replacements. Both maintain the 2-circuit, 8-channel bidirectional translator architecture with tri-state output in the 48-TFSOP package. The 74FCT series supports VCCA 2.7V–3.6V and VCCB 4.5V–5.5V, providing compatibility with the original VCCB specification while requiring slightly higher VCCA. Both are ROHS3 compliant with MSL-1 ratings and active product status.

Upgraded Alternative (Enhanced Temperature Range):

The 74ALVC164245DGG-QJ from Nexperia offers an extended operating temperature range (-40°C to 125°C) and AEC-Q100 automotive qualification. This part supports VCCA 1.5V–3.6V and VCCB 1.5V–5.5V, providing broader voltage flexibility. It is suitable for applications requiring automotive-grade reliability or elevated temperature operation.

Broader Voltage Range Alternatives:

The SN74AVC16T245DGGR and SN74LVC16T245DGGR from Texas Instruments provide wider supply voltage ranges (1.2V–3.6V and 1.65V–5.5V respectively) with 3-state output. These are appropriate when system designs require greater voltage flexibility, though they represent different logic families (74AVC and 74LVC) compared to the original 74AVC series.

Package Consideration:

The 74FCT164245TPVG and 74FCT164245TPVG8 variants use a 48-BSSOP package (0.295", 7.50mm width) instead of the standard 48-TFSOP. These require PCB layout modifications and are suitable only when the larger package footprint is acceptable.

Avoid:

The 74AVCB164245GRE4 is discontinued at DiGi Electronics and should not be selected for new designs despite its narrow voltage specification match.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC16T245DGGR as a direct replacement for PI74AVC164245AEX?

A: The SN74LVC16T245DGGR maintains the same 2-circuit, 8-channel bidirectional configuration and 48-TFSOP package. However, it operates across a wider voltage range (1.65V–5.5V) and belongs to the 74LVC logic family rather than 74AVC. It is functionally compatible if your system voltages fall within its specification, but verify that the broader voltage tolerance does not introduce unintended behavior in your application.

Q: What is the difference between 74FCT164245TPAG and 74FCT164245TPAG8?

A: Both are identical Renesas 74FCT series parts with the same electrical specifications. The primary difference is packaging: TPAG is supplied in Tube, while TPAG8 is supplied in Cut Tape (CT) & Digi-Reel format. Select based on your procurement and assembly requirements.

Q: Why does the 74ALVC164245DGG-QJ have a higher temperature rating?

A: The 74ALVC164245DGG-QJ from Nexperia is qualified to -40°C to 125°C and carries AEC-Q100 automotive certification. This extended rating reflects enhanced manufacturing process control and reliability validation suitable for automotive and high-temperature industrial applications. The original PI74AVC164245AEX is rated only to 85°C.

Q: Are all substitutes ROHS3 compliant?

A: All listed active substitutes are ROHS3 compliant. The 74AVCB164245GRE4 is also ROHS3 compliant but is discontinued and should not be used for new designs.

Q: Does package size affect substitution eligibility?

A: Yes. The 48-TFSOP and 48-TSSOP packages are mechanically compatible and interchangeable on PCBs. However, the 48-BSSOP package (used by 74FCT164245TPVG variants) has a different footprint (0.295" vs. 0.240" width) and requires PCB redesign. Select 48-TFSOP or 48-TSSOP variants for direct board-level compatibility.

Q: What is the MSL rating and why does it matter?

A: Moisture Sensitivity Level (MSL) indicates how long a component can be exposed to ambient humidity before soldering. MSL-1 (unlimited) means no time restriction. Most substitutes carry MSL-1 ratings. The 74FCT164245TPVG carries MSL-3 (168 hours), requiring more careful handling and storage protocols.

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