74LVTH245WM Equivalent & Substitute Parts

Part Overview

The 74LVTH245WM is a non-inverting transceiver IC manufactured by onsemi, designed for 8-bit data bus applications with 3-state output capability. Operating at 2.7V to 3.6V supply voltage, this component provides 32mA output high current and 64mA output low current in a 20-SOIC package. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring compatible transceiver functionality.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High	32mA
Current - Output Low	64mA
Voltage - Supply	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74LVTH245WM is determined by the following critical parameters:

Electrical Compatibility Requirements:

Logic type: Transceiver, Non-Inverting
Number of elements: 1
Number of bits per element: 8
Output type: 3-State
Supply voltage range: 2.7V ~ 3.6V
Operating temperature range: -40°C ~ 85°C

Mechanical Compatibility:

Mounting type: Surface Mount
Package footprint compatibility (20-SOIC or equivalent pitch)

Current Output Specifications: Parts are grouped into two categories based on output current ratings:

Direct substitutes: 32mA output high, 64mA output low (matches 74LVTH245WM exactly)
Similar substitutes: 12mA output high, 12mA output low (reduced drive capability, suitable for lower-current applications)

Substitutes maintain identical functional behavior and pin configuration while differing in package form factor, manufacturer, and in some cases, output drive current specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Output Current (High/Low)	Package / Case	Base Product Number
74LVTH245WM	onsemi	74LVTH	Obsolete	32mA / 64mA	20-SOIC (0.295", 7.50mm)	74LVTH245
74LVTH245MTCX	Fairchild Semiconductor	74LVTH	Active	32mA / 64mA	20-TSSOP (0.173", 4.40mm)	74LVTH245
74LVT245BD,118	Nexperia USA Inc.	74LVT	Active	32mA / 64mA	20-SOIC (0.295", 7.50mm)	74LVT245
74LVT245D,118	Nexperia USA Inc.	74LVT	Active	32mA / 64mA	20-SOIC (0.295", 7.50mm)	74LVT245
74LVT2245D,118	Nexperia USA Inc.	74LVT	Active	12mA / 12mA	20-SOIC (0.295", 7.50mm)	74LVT2245
74LVTH2245D,118	Nexperia USA Inc.	74LVTH	Active	12mA / 12mA	20-SOIC (0.295", 7.50mm)	74LVTH2245
SN74LVT245BDWR	Texas Instruments	74LVT	Active	32mA / 64mA	20-SOIC (0.295", 7.50mm)	74LVT245
SN74LVT245BNSR	Texas Instruments	74LVT	Active	32mA / 64mA	20-SOIC (0.209", 5.30mm)	74LVT245
SN74LVTH2245DW	Texas Instruments	74LVTH	Active	32mA / 64mA; 12mA / 12mA	20-SOIC (0.295", 7.50mm)	74LVTH2245
SN74LVTH2245DWR	Texas Instruments	74LVTH	Active	32mA / 64mA; 12mA / 12mA	20-SOIC (0.295", 7.50mm)	74LVTH2245
SN74LVTH245ADWR	Texas Instruments	74LVTH	Active	32mA / 64mA	20-SOIC (0.295", 7.50mm)	74LVTH245

Engineering Selection Recommendations

Direct Substitutes (Identical Output Current): SN74LVTH245ADWR, SN74LVT245BDWR, 74LVT245D,118, and 74LVT245BD,118 provide pin-compatible replacement with matching 32mA/64mA output current specifications. These parts are manufactured by Texas Instruments and Nexperia USA Inc., both with active product status and ROHS3 compliance. The 20-SOIC package footprint matches the original 74LVTH245WM, enabling direct PCB substitution.

Alternative with Reduced Drive Current: 74LVTH2245D,118 and SN74LVTH2245DW/DWR offer functional equivalence with reduced output current (12mA/12mA). These are suitable for applications where lower drive capability is acceptable, providing active product status and ROHS3 compliance.

Package Variant: 74LVTH245MTCX (Fairchild Semiconductor) maintains identical electrical specifications but uses a 20-TSSOP package (0.173" width) instead of 20-SOIC. This variant requires PCB layout modification due to different pin pitch and footprint.

All recommended substitutes maintain the 2.7V to 3.6V supply voltage range, -40°C to 85°C operating temperature, and 3-state output functionality of the original 74LVTH245WM.

Frequently Asked Questions (FAQ)

Q: Can I use 74LVT2245D,118 as a direct replacement for 74LVTH245WM? A: 74LVT2245D,118 is functionally compatible but has reduced output current (12mA/12mA versus 32mA/64mA). Use this substitute only if your circuit design does not require the higher drive current of the original part.

Q: What is the difference between 74LVTH and 74LVT series parts? A: Both series operate at 2.7V to 3.6V and provide non-inverting transceiver functionality with 3-state outputs. The primary difference lies in output current specifications and specific part variants. Verify output current requirements for your application before substitution.

Q: Is 74LVTH245MTCX compatible with the original 74LVTH245WM PCB layout? A: 74LVTH245MTCX uses a 20-TSSOP package (0.173" width) versus the 20-SOIC package (0.295" width) of the 74LVTH245WM. PCB footprint modification is required; direct socket substitution is not possible.

Q: Are all substitute parts ROHS3 compliant? A: All active substitute parts listed (Texas Instruments and Nexperia USA Inc. variants) are ROHS3 compliant. The original 74LVTH245WM (onsemi, obsolete) does not specify ROHS status.

Q: What is the MSL rating for substitute parts? A: All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original 74LVTH245WM specification.

Q: Can I substitute SN74LVT245BNSR if my PCB uses a standard 20-SOIC footprint? A: SN74LVT245BNSR uses a 20-SOIC package with 0.209" width versus the standard 0.295" width. Verify your PCB footprint specifications before selection, as pin pitch differences may prevent proper seating.

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