74LCX16373MEA Equivalent & Substitute Parts

Part Overview

The 74LCX16373MEA is a D-Type Transparent Latch IC manufactured by onsemi, featuring 16-bit dual-channel (2 Channel 8:8) tri-state output configuration in a 48-SSOP package. This component operates across a 2V to 3.6V supply voltage range with a propagation delay of 5.4ns and supports 24mA output current capability. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LCX16373MEA
Manufacturer	onsemi
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Independent Circuits	2
Output Type	Tri-State
Voltage - Supply	2V ~ 3.6V
Delay Time - Propagation	5.4ns
Current - Output High, Low	24mA, 24mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)
Supplier Device Package	48-SSOP
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the 74LCX16373MEA is determined by the following critical parameters:

Primary Substitution Criteria:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8
Independent Circuits: 2 (dual-channel requirement)
Output Type: Tri-State
Supply Voltage Compatibility: Minimum 1.65V to 3.6V range (encompasses the original 2V ~ 3.6V specification)
Output Current: 24mA minimum for both high and low states
Operating Temperature Range: -40°C ~ 85°C minimum
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Package Compatibility Considerations: Substitutes are available in two package variants: 48-SSOP (0.295", 7.50mm Width) and 48-TSSOP (0.240", 6.10mm Width). Both are surface-mount packages with identical pin counts and electrical functionality, differing only in physical footprint dimensions.

Special Case - Single Channel Alternative: The CLVC16373AMDLREP represents a single-channel (1 Independent Circuit) variant. This part is electrically compatible but provides only one 8:8 latch channel instead of two, requiring design verification for dual-channel applications.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits	Supply Voltage	Propagation Delay	Output Current (mA)	Operating Temp	Package	Product Status
74LCX16373MEA	onsemi	D-Type Transparent Latch	2	2V ~ 3.6V	5.4ns	24, 24	-40°C ~ 85°C	48-BSSOP	Obsolete
74LVC162373ADGG,11	NXP Semiconductors	D-Type Transparent Latch	2	1.65V ~ 3.6V	Not specified	24, 24	-40°C ~ 85°C	Not specified	Active
74LVC16373ADGGRG4	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-TSSOP	Discontinued at DiGi Electronics
74LVC16373APAG	Renesas Electronics Corporation	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-TSSOP	Obsolete
74LVC16373APVG	IDT, Integrated Device Technology Inc	D-Type Transparent Latch	2	2.3V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-BSSOP	Active
CLVC16373AMDLREP	Texas Instruments	D-Type Transparent Latch	1	1.65V ~ 3.6V	1.3ns	24, 24	-55°C ~ 125°C	48-BSSOP	Active
SN74LVC16373ADGVR	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-TVSOP	Active
SN74LVC16373ADL	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-BSSOP	Active
SN74LVC16373ADLR	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-BSSOP	Active
SN74LVC16373DGGR	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-TSSOP	Active
SN74LVC16373DL	Texas Instruments	D-Type Transparent Latch	2	1.65V ~ 3.6V	2.1ns	24, 24	-40°C ~ 85°C	48-BSSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Identical Dual-Channel Configuration):

For applications requiring direct replacement with active product status and dual-channel 8:8 latch configuration, the following parts are recommended:

SN74LVC16373ADL and SN74LVC16373ADLR (Texas Instruments): Both feature 48-BSSOP packaging matching the original footprint, active product status, and ROHS3 compliance. The ADLR variant includes tape and reel packaging for production volumes.
SN74LVC16373DL (Texas Instruments): Provides 48-BSSOP package compatibility with active status and ROHS3 compliance.
74LVC16373APVG (IDT): Offers 48-BSSOP package compatibility with active product status. Supply voltage range begins at 2.3V, which is compatible with the original 2V ~ 3.6V specification for applications operating above 2.3V.

Package Variant Substitutes (Active Status, Compact Footprint):

For designs accommodating a smaller 48-TSSOP footprint:

SN74LVC16373DGGR (Texas Instruments): Active status with 48-TSSOP package, ROHS3 compliance, and improved propagation delay of 2.1ns.
SN74LVC16373ADGVR (Texas Instruments): Active status with 48-TVSOP package (0.173", 4.40mm Width), the most compact option, with ROHS3 compliance.

Extended Temperature Range Alternative:

CLVC16373AMDLREP (Texas Instruments): Single-channel variant with extended operating temperature range (-55°C ~ 125°C) and improved propagation delay (1.3ns). Suitable only for applications requiring one 8:8 latch channel.

Compliance Considerations:

All substitute parts maintain REACH Unaffected status and ECCN EAR99 classification, consistent with the original part. Parts with ROHS3 compliance designation provide enhanced environmental compliance for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 48-TSSOP package substitute in place of the 48-BSSOP original?

A: The 48-TSSOP and 48-BSSOP packages differ in physical dimensions (0.240" vs. 0.295" width). PCB footprints are not interchangeable. Verify your PCB layout accommodates the substitute package before implementation. Electrical functionality is identical.

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

A: The 74LCX16373MEA operates at 2V ~ 3.6V supply voltage. The 74LVC series substitutes operate at 1.65V ~ 3.6V, providing broader low-voltage compatibility. Both series are functionally equivalent D-Type Transparent Latches with identical circuit configurations.

Q: Is the CLVC16373AMDLREP a direct replacement?

A: The CLVC16373AMDLREP is electrically compatible but provides only one independent 8:8 latch circuit instead of two. It is suitable only for applications requiring single-channel operation. Dual-channel applications require parts with 2 independent circuits.

Q: What does "Active" product status mean compared to "Obsolete"?

A: Active status indicates the part is currently manufactured and available from the supplier. Obsolete status indicates the part is no longer in production. For new designs, select substitutes with Active status to ensure long-term availability and supply chain stability.

Q: Are all substitutes ROHS3 compliant?

A: Most active substitutes carry ROHS3 compliance designation. The 74LVC162373ADGG,11 (NXP) does not specify ROHS status in the provided data. Verify compliance requirements for your application and confirm with the manufacturer if ROHS certification is mandatory.

Q: What is the significance of propagation delay differences?

A: The original 74LCX16373MEA specifies 5.4ns propagation delay. Most 74LVC substitutes provide 2.1ns, representing improved performance. The CLVC16373AMDLREP provides 1.3ns. Faster propagation delay does not affect backward compatibility; designs based on the original 5.4ns specification will function correctly with faster substitutes.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet the electrical requirements of your circuit. However, maintain consistent part selection within production batches to ensure uniform performance characteristics and simplify inventory management.

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