PI74AVC164245LAAEX Equivalent & Substitute Parts

Part Overview

The PI74AVC164245LAAEX is a voltage level translator IC manufactured by Diodes Incorporated, designed for bidirectional translation between two different voltage domains. This 48-TSSOP surface mount device features 2 circuits with 8 channels per circuit, supporting VCCA voltage range of 2.3V to 2.7V and VCCB voltage range of 3V to 3.6V. The device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The tri-state, non-inverted output configuration enables flexible system integration in mixed-voltage applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74AVC164245LAAEX
Manufacturer	Diodes Incorporated
Series	74AVC
Product Status	Obsolete
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 ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Supplier Device Package	48-TSSOP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74AVC164245LAAEX 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 type
Surface mount 48-TSSOP package

Electrical Compatibility:

VCCA and VCCB voltage ranges must accommodate the original operating voltages or provide broader compatibility
Operating temperature range must meet or exceed -40°C to 85°C minimum
Output current specifications (12mA typical for high and low) must be maintained

Compliance & Environmental:

RoHS3 compliance required
MSL rating of 1 (Unlimited) preferred for manufacturing flexibility

Substitute parts are grouped into three categories: direct equivalents with identical voltage specifications, compatible alternatives with extended voltage ranges, and upgraded variants with enhanced temperature ratings or automotive qualification.

Parameter Comparison

Parameter	PI74AVC164245LAAEX	74ALVC164245PAG	SN74AVC16T245DGGR	74ALVC164245DGG-QJ	CALVC164245MDGGREP
Manufacturer	Diodes Inc.	IDT	Texas Instruments	Nexperia	Texas Instruments
Series	74AVC	74ALVC	74AVC	74ALVC	74ALVC
Product Status	Obsolete	Active	Active	Active	Active
Translator Type	Voltage Level	Voltage Level	Translation Transceiver	Voltage Level	Voltage Level
Channel Type	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Number of Circuits	2	2	2	2	2
Channels per Circuit	8	8	8	8	8
Voltage - VCCA	2.3V ~ 2.7V	2.7V ~ 3.6V	1.2V ~ 3.6V	1.5V ~ 3.6V	2.3V ~ 3.6V
Voltage - VCCB	3V ~ 3.6V	4.5V ~ 5.5V	1.2V ~ 3.6V	1.5V ~ 5.5V	3V ~ 5.5V
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	3-State	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	48-TFSOP (0.240")	48-TFSOP (0.240")	48-TFSOP (0.240")	48-TFSOP (0.240")	48-TFSOP (0.240")
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitutes (Voltage-Compatible): CALVC164245MDGGREP from Texas Instruments is the most compatible direct substitute. It maintains the original VCCA range (2.3V ~ 3.6V) and VCCB range (3V ~ 5.5V), supports the same 2-circuit, 8-channel bidirectional configuration, and is RoHS3 compliant with MSL 1 rating. This part extends the operating temperature range to -55°C ~ 125°C, providing enhanced reliability for demanding applications.

Extended Voltage Range Alternatives: SN74AVC16T245DGGR from Texas Instruments and 74ALVC164245DGG-QJ from Nexperia offer broader voltage compatibility. The SN74AVC16T245DGGR supports 1.2V ~ 3.6V supply voltage, enabling use in lower-voltage systems. The 74ALVC164245DGG-QJ provides automotive-grade qualification (AEC-Q100) with extended temperature range (-40°C ~ 125°C), suitable for automotive and industrial applications.

Active Production Alternatives: 74ALVC164245PAG from IDT and 74ALVC164245PVG from Renesas Electronics are active production parts with established supply chains. Both maintain the 2-circuit, 8-channel configuration and tri-state output. Note that 74ALVC164245PVG uses a 48-BSSOP package (0.295" width) instead of 48-TFSOP, requiring PCB layout verification before substitution.

Selection Criteria:

For direct replacement in existing designs: CALVC164245MDGGREP
For new designs requiring extended temperature range: 74ALVC164245DGG-QJ
For automotive applications: 74ALVC164245DGG-QJ (AEC-Q100 qualified)
For cost-optimized production: 74ALVC164245PAG or 74ALVC164245PAG8

All recommended substitutes maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I use 74ALVC164245PAG as a direct replacement for PI74AVC164245LAAEX? A: 74ALVC164245PAG is functionally compatible but has different voltage specifications. The original part supports VCCA 2.3V ~ 2.7V and VCCB 3V ~ 3.6V, while 74ALVC164245PAG supports VCCA 2.7V ~ 3.6V and VCCB 4.5V ~ 5.5V. If your system operates within the 74ALVC164245PAG voltage ranges, it is a suitable substitute. Verify your actual operating voltages before selection.

Q: What is the difference between 48-TFSOP and 48-BSSOP packages? A: Both are 48-pin surface mount packages, but they differ in width. 48-TFSOP is 0.240" (6.10mm) wide, while 48-BSSOP is 0.295" (7.50mm) wide. PCB layouts designed for 48-TFSOP may not accommodate 48-BSSOP without modification. Verify your PCB footprint before selecting 74ALVC164245PVG, which uses the 48-BSSOP package.

Q: Why does CALVC164245MDGGREP have a wider operating temperature range? A: CALVC164245MDGGREP is specified for -55°C ~ 125°C operation, compared to the original -40°C ~ 85°C. This extended range reflects the part's design for industrial and automotive applications where temperature extremes are common. If your application only requires -40°C ~ 85°C, standard-range parts are sufficient.

Q: Is 74ALVC164245DGG-QJ suitable for automotive applications? A: Yes. 74ALVC164245DGG-QJ carries AEC-Q100 automotive qualification and is manufactured by Nexperia. It supports extended temperature range (-40°C ~ 125°C) and provides the voltage flexibility required for automotive mixed-voltage translation circuits.

Q: What does RoHS3 compliance mean for my design? A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes are RoHS3 compliant, ensuring compatibility with modern supply chain requirements and environmental regulations.

Q: Can I substitute SN74AVC16T245DGGR if my system uses 1.2V logic? A: SN74AVC16T245DGGR supports supply voltage from 1.2V ~ 3.6V, making it suitable for low-voltage applications. However, verify that your specific circuit topology and signal levels are compatible with this part's electrical characteristics before implementation.

Q: What is MSL 1 (Unlimited) and why does it matter? A: MSL (Moisture Sensitivity Level) 1 indicates the part has unlimited shelf life without special moisture control. This simplifies inventory management and reduces the risk of moisture-induced failures during storage and handling. All recommended substitutes maintain MSL 1 rating.

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