74VCX162373MTD Equivalent & Substitute Parts

Part Overview

The 74VCX162373MTD is a D-Type Transparent Latch IC manufactured by onsemi, featuring 2 independent channels with 8:8 circuit configuration and tri-state output capability. This 16-bit transparent latch operates across a supply voltage range of 1.4V to 3.6V and is housed in a 48-TSSOP package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Logic Type	D-Type Transparent Latch
Circuit Configuration	2 Channel 8:8
Output Type	Tri-State
Voltage Supply Range	1.4V ~ 3.6V
Propagation Delay	1ns
Output Current (High/Low)	12mA / 12mA
Operating Temperature	-40°C ~ 85°C
Package Type	48-TSSOP
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74VCX162373MTD is determined by strict alignment with the following critical parameters:

Logic Type & Circuit Configuration: Must be D-Type Transparent Latch with 2 Channel 8:8 configuration
Output Type: Must provide tri-state output capability
Supply Voltage Range: Minimum range must encompass or exceed 1.4V ~ 3.6V
Package & Pinout: Must use 48-TSSOP or compatible 48-pin package with identical pinout
Operating Temperature: Must support -40°C ~ 85°C range
Output Current Capability: Must meet or exceed 12mA per output

Substitute parts are categorized as direct equivalents when all electrical and mechanical parameters align with the main part specifications. Parts with extended voltage ranges, higher output current ratings, or improved propagation delays remain functionally compatible within the original design envelope.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Propagation Delay	Output Current (H/L)	Package	RoHS Status
74VCX162373MTD	onsemi	Obsolete	1.4V ~ 3.6V	1ns	12mA / 12mA	48-TSSOP	Not specified
74VCX162373MTDX	Fairchild Semiconductor	Active	1.4V ~ 3.6V	1ns	12mA / 12mA	48-TSSOP	Not specified
74ALVCH162373PAG	IDT	Active	2.3V ~ 3.6V	1.5ns	12mA / 12mA	48-TSSOP	Not specified
SN74ALVCH162373DL	Texas Instruments	Active	1.65V ~ 3.6V	1ns	12mA / 12mA	48-BSSOP	ROHS3 Compliant
SN74ALVCH162373GR	Texas Instruments	Active	1.65V ~ 3.6V	1ns	12mA / 12mA	48-TSSOP	ROHS3 Compliant
SN74ALVCH162373LR	Texas Instruments	Active	1.65V ~ 3.6V	1ns	12mA / 12mA	48-BSSOP	ROHS3 Compliant
SN74ALVCH16373DGG	Texas Instruments	Active	1.65V ~ 3.6V	3.9ns	24mA / 24mA	48-TSSOP	ROHS3 Compliant
SN74ALVCH16373DGGR	Texas Instruments	Active	1.65V ~ 3.6V	1ns	24mA / 24mA	48-TSSOP	ROHS3 Compliant
SN74ALVCH16373DL	Texas Instruments	Active	1.65V ~ 3.6V	1ns	24mA / 24mA	48-BSSOP	ROHS3 Compliant
SN74ALVCH16373DLR	Texas Instruments	Active	1.65V ~ 3.6V	1ns	24mA / 24mA	48-BSSOP	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Preferred for Pin-Compatible Replacement)

The 74VCX162373MTDX from Fairchild Semiconductor provides the closest electrical match with identical voltage range (1.4V ~ 3.6V), propagation delay (1ns), and output current specifications (12mA/12mA). This part maintains active product status and is available in the original 48-TSSOP package.

Active Alternatives with Extended Voltage Range

The SN74ALVCH162373GR and SN74ALVCH162373LR from Texas Instruments operate within a narrower minimum voltage threshold (1.65V vs. 1.4V) but maintain all other critical electrical parameters. Both parts are ROHS3 compliant and carry active product status. SN74ALVCH162373GR is packaged in 48-TSSOP, while SN74ALVCH162373LR uses 48-BSSOP.

Higher Output Current Variants

The SN74ALVCH16373DGGR and SN74ALVCH16373DLR provide doubled output current capability (24mA/24mA) while maintaining 1ns propagation delay and 1.65V ~ 3.6V supply range. These parts are suitable for applications requiring increased drive capability and are ROHS3 compliant.

Compliance Considerations

All Texas Instruments alternatives carry ROHS3 compliance certification. The 74ALVCH162373PAG from IDT offers active status but exhibits slightly extended propagation delay (1.5ns) and a narrower voltage floor (2.3V minimum).

Frequently Asked Questions (FAQ)

Q: Can I use SN74ALVCH162373GR as a direct replacement for 74VCX162373MTD?

A: Yes. Both parts share identical electrical specifications (1ns propagation delay, 12mA output current, -40°C to 85°C operating range) and use the 48-TSSOP package. The SN74ALVCH162373GR has a slightly higher minimum supply voltage (1.65V vs. 1.4V), which is acceptable if your design operates above 1.65V.

Q: What is the difference between 48-TSSOP and 48-BSSOP packages?

A: Both are 48-pin surface mount packages with identical pinout compatibility. The primary difference is package width: 48-TFSOP measures 0.240" (6.10mm) while 48-BSSOP measures 0.295" (7.50mm). PCB layout and footprint must accommodate the specific package width.

Q: Why do some substitutes have higher output current ratings (24mA vs. 12mA)?

A: Parts like SN74ALVCH16373DGGR and SN74ALVCH16373DLR provide enhanced drive capability. These remain functionally compatible with designs expecting 12mA output, as higher-rated components can supply lower currents without performance degradation.

Q: Is the 74ALVCH162373PAG from IDT a suitable substitute?

A: The 74ALVCH162373PAG maintains core functionality but operates with a minimum supply voltage of 2.3V (versus 1.4V for the original) and exhibits 1.5ns propagation delay (versus 1ns). Substitution is valid only if your design operates above 2.3V and can tolerate the additional propagation delay.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. This certification is relevant for applications subject to environmental regulations and is provided by all Texas Instruments alternatives listed.

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

A: Yes, provided all parts operate within your design's electrical specifications. However, mixing parts with different propagation delays (1ns vs. 1.5ns vs. 3.9ns) may introduce timing variations. Verify timing margins in your application before mixing variants.

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