FXWA9306MUX Equivalent & Substitute Parts

Part Overview

The FXWA9306MUX is a bidirectional voltage level translator manufactured by onsemi, designed to interface logic signals between different voltage domains. This 8-MSOP surface mount device translates between VCCA (1 V ~ 5.5 V) and VCCB (1.8 V ~ 5.5 V) with open drain and tri-state output capability. The product is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	2
Voltage - VCCA	1 V ~ 5.5 V
Voltage - VCCB	1.8 V ~ 5.5 V
Output Type	Open Drain, Tri-State
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the FXWA9306MUX is determined by the following critical parameters:

Translator Type: Voltage Level (bidirectional capability required)
Channel Configuration: 1 circuit with 2 channels per circuit
Voltage Compatibility: VCCA range 1 V ~ 5.5 V and VCCB range 1.8 V ~ 5.5 V
Output Type: Tri-State or Open Drain capability
Package Compatibility: Surface mount packages with equivalent pin counts and footprints
Operating Temperature Range: Minimum -40°C ~ 85°C support

Substitute parts are grouped into two categories based on voltage range compatibility:

Category A - Extended Voltage Range (0.8 V ~ 3.6 V): 74AVC and 74AVCH series parts offer lower voltage operation but narrower upper voltage limits compared to the FXWA9306MUX. These are suitable for applications operating within 0.8 V ~ 3.6 V range.

Category B - Extended Voltage Range (1.2 V ~ 5.5 V): 74LVC and 74LVCH series parts maintain compatibility with the FXWA9306MUX upper voltage limit of 5.5 V while supporting lower minimum voltages of 1.2 V.

Parameter Comparison

Part Number	Manufacturer	Translator Type	Channel Type	Circuits / Channels	VCCA Range	VCCB Range	Output Type	Data Rate	Operating Temp	Package	Product Status
FXWA9306MUX	onsemi	Voltage Level	Bidirectional	1 / 2	1 V ~ 5.5 V	1.8 V ~ 5.5 V	Open Drain, Tri-State	—	-40°C ~ 85°C	8-MSOP	Obsolete
74AVC2T45DC,125	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-VSSOP	Active
74AVC2T45DC-Q100H	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-VFSOP	Active
74AVC2T45GF,115	NXP USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-XSON (1.35x1)	Active
74AVC2T45GT,115	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-XSON (1.95x1)	Active
74AVCH2T45DC,125	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-VSSOP	Active
74AVCH2T45GF,115	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-XSON (1.35x1)	Obsolete
74AVCH2T45GT,115	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Tri-State, Non-Inverted	500 Mbps	-40°C ~ 125°C	8-XSON (1.95x1)	Active
74LVC2T45DC,125	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	Tri-State, Non-Inverted	420 Mbps	-40°C ~ 125°C	8-VSSOP	Active
74LVC2T45GT,115	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	Tri-State, Non-Inverted	420 Mbps	-40°C ~ 125°C	8-XSON (1.95x1)	Active
74LVCH2T45DC,125	Nexperia USA Inc.	Voltage Level	Bidirectional	1 / 2	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	Tri-State, Non-Inverted	420 Mbps	-40°C ~ 125°C	8-VSSOP	Active

Engineering Selection Recommendations

For applications requiring 1 V ~ 5.5 V VCCA and 1.8 V ~ 5.5 V VCCB compatibility:

The 74LVC2T45 series (74LVC2T45DC,125 and 74LVC2T45GT,115) provides the closest voltage range match to the FXWA9306MUX. Both parts are active products with ROHS3 compliance and extended operating temperature support to 125°C. The 74LVC2T45DC,125 is available in 8-VSSOP package, while 74LVC2T45GT,115 offers 8-XSON package options. Data rate is specified at 420 Mbps.

The 74LVCH2T45DC,125 offers identical voltage specifications and is also an active product with ROHS3 compliance, providing an alternative in 8-VSSOP packaging.

For applications operating within 0.8 V ~ 3.6 V range:

The 74AVC2T45 and 74AVCH2T45 series are suitable alternatives. The 74AVC2T45DC,125, 74AVC2T45DC-Q100H (automotive qualified, AEC-Q100), 74AVC2T45GF,115, and 74AVC2T45GT,115 are all active products with 500 Mbps data rate capability. The 74AVCH2T45DC,125 and 74AVCH2T45GT,115 are active products offering equivalent performance. Note that 74AVCH2T45GF,115 is classified as obsolete.

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity and REACH unaffected status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can 74AVC2T45 series parts directly replace FXWA9306MUX in existing designs?

A: 74AVC2T45 series parts are functionally equivalent for bidirectional voltage translation with identical circuit and channel configuration. However, the voltage range is limited to 0.8 V ~ 3.6 V, which is narrower than the FXWA9306MUX specification of 1 V ~ 5.5 V VCCA and 1.8 V ~ 5.5 V VCCB. Substitution is valid only if your application operates within the 0.8 V ~ 3.6 V range.

Q: What is the primary difference between 74LVC and 74AVCH series?

A: The 74LVC series supports voltage ranges of 1.2 V ~ 5.5 V with 420 Mbps data rate, while 74AVCH series operates at 0.8 V ~ 3.6 V with 500 Mbps data rate. For applications requiring 5.5 V operation, 74LVC series is the appropriate choice.

Q: Are package differences between 8-VSSOP, 8-XSON, and 8-MSOP significant for substitution?

A: Yes. While all are 8-pin surface mount packages, they have different footprints and dimensions. 8-VSSOP (0.091", 2.30mm width) and 8-XSON variants (1.35x1 or 1.95x1) require PCB layout modifications compared to the original 8-MSOP (0.118", 3.00mm width). Verify footprint compatibility before substitution.

Q: Which substitute parts are recommended for new designs?

A: For new designs, select from active product status parts: 74LVC2T45DC,125, 74LVC2T45GT,115, 74LVCH2T45DC,125, 74AVC2T45DC,125, 74AVC2T45DC-Q100H (automotive), 74AVC2T45GF,115, 74AVC2T45GT,115, 74AVCH2T45DC,125, or 74AVCH2T45GT,115. Avoid obsolete parts such as 74AVCH2T45GF,115.

Q: Does operating temperature range affect substitution eligibility?

A: The FXWA9306MUX operates at -40°C ~ 85°C. All listed substitute parts support -40°C ~ 125°C, providing extended temperature capability. This is compatible with the original specification and does not restrict substitution.

Q: Are there compliance or certification differences between substitute parts?

A: All substitute parts maintain REACH unaffected status and MSL 1 (Unlimited) moisture sensitivity. The 74AVC2T45DC-Q100H variant includes AEC-Q100 automotive qualification. ROHS3 compliance is specified for most active substitute parts. Verify specific compliance requirements for your application.

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