74LCX373WM Equivalent & Substitute Parts

Part Overview

The 74LCX373WM is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 channel configuration with tri-state output in a 20-SOIC package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a 2V to 3.6V supply voltage range with 1.5ns propagation delay and 24mA output drive capability.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LCX373WM
Manufacturer	onsemi
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Voltage - Supply	2V ~ 3.6V
Delay Time - Propagation	1.5ns
Current - Output High, Low	24mA, 24mA
Operating Temperature	-40°C ~ 85°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 74LCX373WM is determined by the following critical parameters:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8 channels
Output Type: Tri-State
Propagation Delay: 1.5ns
Output Current: 24mA (High and Low)
Operating Temperature Range: -40°C ~ 85°C
Package Type: 20-SOIC or 20-SO

Substitute parts are grouped into two categories:

Direct Substitutes maintain identical electrical specifications and package dimensions (20-SOIC with 0.295" width), differing only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. loose).

Similar Substitutes maintain core electrical specifications but may have minor package variations (20-SO with 0.209" width) or different supply voltage ranges (1.65V ~ 3.6V vs. 2V ~ 3.6V), which remain compatible for most applications.

Parameter Comparison

Parameter	74LCX373WM (Main)	MC74LCX373DWR2G	SN74LVC373ADW	SN74LVC373ADWR	SN74LVC373ANSR
Manufacturer	onsemi	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch
Circuit Configuration	8:8	8:8	8:8	8:8	8:8
Output Type	Tri-State	Tri-State	Tri-State	Tri-State	Tri-State
Voltage - Supply	2V ~ 3.6V	2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Delay Time - Propagation	1.5ns	1.5ns	1.5ns	1.5ns	1.5ns
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-SOIC (0.295")	20-SOIC (0.295")	20-SOIC (0.295")	20-SOIC (0.295")	20-SO (0.209")
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MC74LCX373DWR2G (onsemi) is the primary direct substitute, maintaining identical electrical specifications and package dimensions. This part is Active status with ROHS3 compliance, available in Tape & Reel packaging format.

SN74LVC373ADW (Texas Instruments) provides direct substitution with extended supply voltage range (1.65V ~ 3.6V), offering broader operational flexibility. Active status with ROHS3 compliance, supplied in Tube packaging.

SN74LVC373ADWR (Texas Instruments) is functionally equivalent to SN74LVC373ADW with identical electrical specifications and extended voltage range. Active status with ROHS3 compliance, available in Cut Tape & Digi-Reel packaging.

SN74LVC373ANSR (Texas Instruments) maintains all core electrical specifications with extended supply voltage range. Package variation (20-SO with 0.209" width) requires PCB layout verification for pin-to-pin compatibility. Active status with ROHS3 compliance, supplied in Tape & Reel format.

74LVC373AD,118 (NXP Semiconductors) is functionally compatible with core logic specifications. Limited technical data provided; verification of package and electrical parameters recommended before design integration.

All substitute parts maintain the same logic function, propagation delay, output current, and operating temperature range as the original 74LCX373WM.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC373ANSR replace 74LCX373WM directly on the PCB?

A: SN74LVC373ANSR maintains identical electrical specifications and pin count. However, the package width differs (0.209" vs. 0.295"), requiring PCB layout verification to confirm mechanical compatibility with existing footprints.

Q: What is the difference between MC74LCX373DWR2G and SN74LVC373ADW?

A: Both parts are electrically equivalent with identical propagation delay and output current. MC74LCX373DWR2G maintains the original 2V ~ 3.6V supply range, while SN74LVC373ADW extends to 1.65V ~ 3.6V. Packaging differs: MC74LCX373DWR2G uses Tape & Reel; SN74LVC373ADW uses Tube.

Q: Are all substitute parts ROHS3 compliant?

A: MC74LCX373DWR2G, SN74LVC373ADW, SN74LVC373ADWR, and SN74LVC373ANSR are all ROHS3 compliant. Compliance status for 74LVC373AD,118 was not provided in available data.

Q: Which substitute offers the widest supply voltage range?

A: SN74LVC373ADW, SN74LVC373ADWR, and SN74LVC373ANSR all support 1.65V ~ 3.6V, extending the lower voltage limit compared to the original 74LCX373WM (2V ~ 3.6V).

Q: What packaging formats are available for substitutes?

A: MC74LCX373DWR2G is available in Tape & Reel; SN74LVC373ADW in Tube; SN74LVC373ADWR in Cut Tape & Digi-Reel; SN74LVC373ANSR in Tape & Reel; 74LVC373AD,118 in Bulk.

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