SN74LVC245ADWG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC245ADWG4 is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This device operates across a supply voltage range of 1.65V to 3.6V and is housed in a 20-SOIC package. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74LVC245ADWG4
Manufacturer	Texas Instruments
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SN74LVC245ADWG4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Logic type: Transceiver, Non-Inverting
Number of elements: 1
Number of bits per element: 8
Output type: 3-State
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting type: Surface Mount
Output current capability: 24mA (high and low)

Secondary Compatibility Factors:

Supply voltage range must encompass or match 1.65V ~ 3.6V
Operating temperature range must support -40°C ~ 125°C (TA)
RoHS3 compliance and MSL rating

Substitute parts are grouped into two categories: parametric equivalents (identical electrical and mechanical specifications) and manufacturer-recommended alternatives (functionally compatible with minor parameter variations).

Parameter Comparison

Parameter	SN74LVC245ADWG4	SN74LVC245ADW	74LVC245AD,118	74LVCH245AD,118	MC74LCX245DWG	MC74LCX245DWR2G	SN74LVCH245ADW
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.	Nexperia USA Inc.	onsemi	onsemi	Texas Instruments
Logic Type	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting
Number of Elements	1	1	1	1	1	1	1
Number of Bits per Element	8	8	8	8	8	8	8
Output Type	3-State	3-State	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	1.2V ~ 3.6V	1.2V ~ 3.6V	2V ~ 5.5V	2V ~ 5.5V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-55°C ~ 125°C (TA)	-55°C ~ 125°C (TA)	-40°C ~ 125°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement):

SN74LVC245ADW and SN74LVCH245ADW are parametric equivalents to the SN74LVC245ADWG4, offering identical electrical specifications and package dimensions. Both are manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. These parts maintain the same supply voltage range (1.65V ~ 3.6V), output current ratings (24mA), and operating temperature range (-40°C ~ 125°C). Both are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's environmental specifications.

Manufacturer-Recommended Alternatives:

The Nexperia USA Inc. parts 74LVC245AD,118 and 74LVCH245AD,118 provide functional compatibility with extended supply voltage ranges (1.2V ~ 3.6V), allowing operation in lower voltage applications. These parts maintain identical output current capability and package form factor. The extended lower voltage limit provides design flexibility for systems operating below 1.65V.

The onsemi MC74LCX245DWG and MC74LCX245DWR2G represent alternatives with expanded supply voltage range (2V ~ 5.5V) and extended operating temperature range (-55°C ~ 125°C). These parts are suitable for applications requiring higher voltage tolerance or wider temperature operation. Note that MSL rating is 3 (168 Hours), requiring controlled storage conditions compared to the original part's unlimited MSL.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and are currently in active production status, ensuring regulatory alignment and supply continuity. Inventory availability ranges from 872 to 58,382 units across substitute options, supporting both prototype and production-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC245ADW be used as a direct replacement for SN74LVC245ADWG4?

A: Yes. SN74LVC245ADW is a parametric equivalent with identical electrical specifications, output current ratings (24mA), supply voltage range (1.65V ~ 3.6V), operating temperature range (-40°C ~ 125°C), and 20-SOIC package dimensions. The primary difference is product status: SN74LVC245ADW is active while the original is obsolete.

Q: What is the difference between the Texas Instruments 74LVC and 74LVCH series?

A: Both series are non-inverting transceivers with identical electrical performance for this application. The 74LVCH designation indicates a variant within the same functional family. Both maintain the same supply voltage range (1.65V ~ 3.6V), output current capability (24mA), and package form factor.

Q: Can onsemi MC74LCX245DWG be used in place of the original part?

A: MC74LCX245DWG is functionally compatible but operates across a wider supply voltage range (2V ~ 5.5V) and extended temperature range (-55°C ~ 125°C). It is suitable for applications requiring higher voltage tolerance. However, its MSL rating is 3 (168 Hours), requiring controlled storage conditions, whereas the original part has unlimited MSL.

Q: What does MSL rating mean for component substitution?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before soldering. MSL 1 (Unlimited) allows indefinite storage without special handling. MSL 3 (168 Hours) requires components to be stored in dry conditions and used within 168 hours of opening the package. This affects supply chain logistics and storage requirements.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 20-SOIC surface mount packages matching the original part's form factor. Packaging options (Tube, Tape & Reel, Cut Tape) vary by manufacturer and part number but do not affect electrical or mechanical compatibility.

Q: What is the minimum supply voltage for Nexperia 74LVC245AD,118?

A: Nexperia 74LVC245AD,118 operates across 1.2V ~ 3.6V supply voltage range, supporting operation 0.45V below the original part's minimum of 1.65V. This extended lower voltage range enables use in low-power applications.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the original part's environmental and regulatory requirements.

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