PI74AVC164245A Equivalent & Substitute Parts

Part Overview

The PI74AVC164245A 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 configuration.

The PI74AVC164245A is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives provide enhanced compliance certifications, extended temperature ranges, and improved voltage flexibility while maintaining functional and mechanical compatibility.

Key Parameters

Parameter	Value
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)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74AVC164245A is determined by the following critical parameters:

Functional Architecture: 2 circuits, 8 channels per circuit, bidirectional voltage level translation
Package Compatibility: 48-TFSOP or 48-TSSOP (mechanically equivalent)
Output Configuration: Tri-state, non-inverted output
Voltage Domain Support: VCCA and VCCB ranges must encompass or exceed the original specification
Operating Temperature Range: Minimum -40°C to 85°C
Mounting Type: Surface mount

Substitute parts are grouped into two categories:

Category A – Direct Functional Equivalents (Same Architecture) Parts maintaining identical circuit count, channel configuration, and output type with voltage ranges that support the original operating envelope.

Category B – Enhanced Alternatives (Extended Capabilities) Parts with superior voltage flexibility, extended temperature ranges, or improved compliance certifications while maintaining the same functional architecture and package footprint.

Parameter Comparison

Part Number	Manufacturer	Series	Circuits	Channels/Circuit	VCCA Range	VCCB Range	Output Type	Temp Range	Package	Status	RoHS
PI74AVC164245A	Diodes Inc.	74AVC	2	8	2.3V–2.7V	3V–3.6V	Tri-State, Non-Inv	-40°C to 85°C	48-TFSOP	Obsolete	Non-compliant
SN74ALVC164245DGGR	Texas Instruments	74ALVC	2	8	2.3V–3.6V	3V–5.5V	Tri-State, Non-Inv	-40°C to 85°C	48-TFSOP	Active	ROHS3 Compliant
CAVCB164245MDGGREP	Texas Instruments	74AVCB	2	8	1.4V–3.6V	1.4V–3.6V	Tri-State, Non-Inv	-55°C to 125°C	48-TFSOP	Active	ROHS3 Compliant
CAVCB164245QDGGRQ1	Texas Instruments	74AVCB	2	8	1.4V–3.6V	1.4V–3.6V	Tri-State, Non-Inv	-40°C to 125°C	48-TFSOP	Active	ROHS3 Compliant
CALVC164245MDGGREP	Texas Instruments	74ALVC	2	8	2.3V–3.6V	3V–5.5V	Tri-State, Non-Inv	-55°C to 125°C	48-TFSOP	Active	ROHS3 Compliant
SN74AVCA164245GR	Texas Instruments	74AVCA	2	8	1.4V–3.6V	1.4V–3.6V	Tri-State, Non-Inv	-40°C to 85°C	48-TFSOP	Active	ROHS3 Compliant
74AVC16T245DGG,118	NXP USA Inc.	74AVC	2	8	0.8V–3.6V	0.8V–3.6V	3-State	-40°C to 125°C	48-TFSOP	Active	Not specified
74AVC16T245DGV,118	Nexperia USA Inc.	74AVC	2	8	0.8V–3.6V	0.8V–3.6V	3-State	-40°C to 125°C	48-TFSOP	Active	ROHS3 Compliant
CLVCH16T245MDGGREP	Texas Instruments	74LVCH	2	8	1.65V–5.5V	1.65V–5.5V	3-State	-40°C to 85°C	48-TFSOP	Active	ROHS3 Compliant
74AVCB164245GRE4	Texas Instruments	74AVCB	2	8	1.4V–3.6V	1.4V–3.6V	Tri-State, Non-Inv	-40°C to 85°C	48-TFSOP	Discontinued	ROHS3 Compliant
74ALVC164245PVG8	Renesas Electronics	74ALVC	2	8	2.7V–3.6V	4.5V–5.5V	Tri-State, Non-Inv	-40°C to 85°C	48-BSSOP	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SN74ALVC164245DGGR

The SN74ALVC164245DGGR from Texas Instruments is the most direct substitute for the PI74AVC164245A. It maintains identical circuit architecture (2 circuits, 8 channels per circuit), tri-state non-inverted output configuration, and 48-TFSOP package footprint. The voltage ranges (VCCA 2.3V–3.6V, VCCB 3V–5.5V) fully encompass the original specification. This part is active in production, ROHS3 compliant, and widely available with 29,989 units in stock.

Extended Temperature Alternative: CALVC164245MDGGREP

For applications requiring extended operating temperature range (-55°C to 125°C), the CALVC164245MDGGREP provides superior thermal performance while maintaining functional equivalence. Voltage ranges (VCCA 2.3V–3.6V, VCCB 3V–5.5V) match the primary recommendation. This part is active, ROHS3 compliant, and available in cut tape and digi-reel packaging.

Flexible Voltage Domain Alternative: CAVCB164245MDGGREP

For designs requiring symmetric, wide-range voltage translation (VCCA and VCCB both 1.4V–3.6V), the CAVCB164245MDGGREP offers enhanced voltage flexibility. Extended temperature range (-55°C to 125°C) and ROHS3 compliance are included. This configuration supports asymmetric or symmetric voltage domain applications.

Automotive-Grade Option: CAVCB164245QDGGRQ1

For automotive applications requiring AEC-Q100 qualification, the CAVCB164245QDGGRQ1 provides the same functional architecture with automotive-grade certification. Voltage ranges (1.4V–3.6V symmetric) and extended temperature support (-40°C to 125°C) are included.

Package Variant: 74ALVC164245PVG8 (Renesas)

The 74ALVC164245PVG8 from Renesas Electronics provides functional equivalence in a 48-BSSOP package (0.295", 7.50mm width). This variant is suitable only if the wider package footprint is acceptable in the PCB layout. Voltage ranges (VCCA 2.7V–3.6V, VCCB 4.5V–5.5V) are narrower than the primary recommendation.

Not Recommended for Direct Substitution:

74AVC16T245DGG,118 and 74AVC16T245DGV,118 (NXP/Nexperia): While functionally compatible, these parts use a different naming convention (16T vs. 164245) and may have different internal architecture despite similar pinout. Verify datasheet compatibility before selection.
CLVCH16T245MDGGREP (Texas Instruments): The 74LVCH series operates at higher current output (32mA vs. 12mA) and wider voltage range (1.65V–5.5V), introducing potential signal integrity differences in the original design.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ALVC164245DGGR as a direct drop-in replacement for PI74AVC164245A?

A: Yes. The SN74ALVC164245DGGR is mechanically and functionally compatible. Both use the 48-TFSOP package with identical pinout. The voltage ranges of the substitute fully encompass the original specification (VCCA 2.3V–3.6V, VCCB 3V–5.5V covers the original 2.3V–2.7V and 3V–3.6V). No PCB layout changes are required.

Q: What is the difference between 74ALVC and 74AVCB series?

A: The 74ALVC series supports asymmetric voltage domains (VCCA 2.3V–3.6V, VCCB 3V–5.5V). The 74AVCB series supports symmetric voltage domains (both VCCA and VCCB at 1.4V–3.6V). Select 74AVCB if your design requires identical voltage levels on both sides of the translator.

Q: Why is the PI74AVC164245A marked as obsolete?

A: The part is no longer manufactured by Diodes Incorporated. Active alternatives from Texas Instruments, NXP, Nexperia, and Renesas provide equivalent or superior functionality with current production support and improved compliance certifications.

Q: Does the substitute part require different PCB layout considerations?

A: No. All recommended substitutes use the 48-TFSOP package with identical pinout and footprint (except the Renesas variant, which uses 48-BSSOP). Existing PCB designs require no modification.

Q: What is the difference between ROHS3 compliant and non-compliant parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original PI74AVC164245A is non-compliant. All active substitutes are ROHS3 compliant, meeting modern environmental and regulatory standards.

Q: Can I use the 74LVCH16T245MDGGREP as a substitute?

A: The 74LVCH16T245MDGGREP is functionally compatible but not recommended as a primary choice. It operates at higher output current (32mA vs. 12mA) and supports a wider voltage range (1.65V–5.5V). These differences may affect signal timing and power consumption in the original design. Use only if the wider voltage range is required.

Q: What is the MSL (Moisture Sensitivity Level) rating, and why does it matter?

A: MSL indicates how long a component can be stored in ambient conditions before requiring baking before reflow soldering. The original part has MSL 1 (unlimited storage). Most substitutes also have MSL 1, except CAVCB164245QDGGRQ1 (MSL 3, 168 hours). For standard manufacturing, MSL 1 parts are preferred as they have no storage time restrictions.

Q: Are there any temperature range limitations I should consider?

A: The original part operates -40°C to 85°C. Most substitutes maintain this range. Extended-range alternatives (CALVC164245MDGGREP, CAVCB164245MDGGREP, CAVCB164245QDGGRQ1) support -55°C to 125°C or -40°C to 125°C, providing additional thermal margin for demanding applications.

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