PI74LPT16373AV Equivalent & Substitute Parts

Part Overview

The PI74LPT16373AV is a D-Type Transparent Latch logic IC manufactured by Diodes Incorporated, featuring 1 independent circuit with 8:8 configuration and tri-state output capability. Housed in a 48-SSOP package, this component operates across a 2.7V to 3.6V supply voltage range with 1.5ns propagation delay and 24mA output drive capability.

The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility across electrical specifications, circuit configuration, and mechanical packaging constraints.

Key Parameters

Parameter	Value
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Voltage Supply Range	2.7V ~ 3.6V
Independent Circuits	1
Propagation Delay	1.5ns
Output Current (High/Low)	24mA / 24mA
Operating Temperature	-40°C ~ 85°C
Package Type	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Electrical Compatibility Requirements:

Logic type must be D-Type Transparent Latch
Circuit configuration must be 8:8
Output type must be tri-state
Supply voltage range must encompass or exceed 2.7V ~ 3.6V
Propagation delay must not exceed 1.5ns
Output current capability must meet or exceed 24mA for both high and low states
Operating temperature range must cover -40°C ~ 85°C

Mechanical Compatibility Requirements:

Package type must be 48-pin surface mount (SSOP, TSSOP, or TVSOP variants acceptable)
Pin configuration must maintain functional equivalence

Substitute parts are grouped into two categories based on circuit configuration: single-channel (1 independent circuit) and dual-channel (2 independent circuits) variants. Single-channel variants provide direct functional replacement. Dual-channel variants offer enhanced functionality with additional independent circuits while maintaining backward compatibility through identical pin assignments for the primary circuit.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits	Supply Voltage	Prop. Delay	Output Current	Temp. Range	Package	Status
PI74LPT16373AV	Diodes Inc.	D-Type Latch	1	2.7V ~ 3.6V	1.5ns	24mA / 24mA	-40°C ~ 85°C	48-BSSOP	Obsolete
74LCX162373MTDX	Fairchild Semi.	D-Type Latch	2	2V ~ 3.6V	1.5ns	12mA / 12mA	-40°C ~ 85°C	48-TSSOP	Active
74LCX16373MTDX	Fairchild Semi.	D-Type Latch	2	2V ~ 3.6V	5.4ns	24mA / 24mA	-40°C ~ 85°C	48-TSSOP	Active
74LVC162373ADGG,11	NXP Semi.	D-Type Latch	2	Not specified	Not specified	Not specified	Not specified	Not specified	Active
74LVC16373ADGGRG4	Texas Instruments	D-Type Latch	2	1.65V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-TSSOP	Discontinued
74LVC16373APAG	Renesas Electronics	D-Type Latch	2	1.65V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-TSSOP	Obsolete
74LVC16373APVG	IDT	D-Type Latch	2	2.3V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-BSSOP	Active
CLVC16373AMDLREP	Texas Instruments	D-Type Latch	1	1.65V ~ 3.6V	1.3ns	24mA / 24mA	-55°C ~ 125°C	48-BSSOP	Active
SN74LVC16373ADGVR	Texas Instruments	D-Type Latch	2	1.65V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-TVSOP	Active
SN74LVC16373ADL	Texas Instruments	D-Type Latch	2	1.65V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-BSSOP	Active
SN74LVC16373ADLR	Texas Instruments	D-Type Latch	2	1.65V ~ 3.6V	2.1ns	24mA / 24mA	-40°C ~ 85°C	48-BSSOP	Active

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

CLVC16373AMDLREP (Texas Instruments) is the optimal substitute, maintaining single-channel circuit configuration identical to the PI74LPT16373AV. This part meets all electrical specifications with superior propagation delay (1.3ns vs. 1.5ns) and extended operating temperature range (-55°C ~ 125°C). The part is actively manufactured and RoHS3 compliant, addressing environmental compliance requirements absent in the original component.

Alternative for SSOP Package Requirement:

SN74LVC16373ADL and SN74LVC16373ADLR (Texas Instruments) provide dual-channel functionality in 48-BSSOP packaging, matching the original package footprint. Both parts are actively produced, RoHS3 compliant, and deliver 24mA output drive with 2.1ns propagation delay. The dual-channel configuration provides functional enhancement while maintaining pin compatibility for the primary circuit.

Package-Specific Alternatives:

74LVC16373APVG (IDT) offers active production status in 48-BSSOP packaging with 2.3V minimum supply voltage, suitable for applications requiring the original package form factor. SN74LVC16373ADGVR (Texas Instruments) provides the most compact footprint option in 48-TVSOP packaging with active status and full RoHS3 compliance.

Discontinuation Considerations:

74LVC16373APAG (Renesas) and 74LVC16373ADGGRG4 (Texas Instruments) are classified as obsolete or discontinued at distribution channels. These parts should not be selected for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a dual-channel substitute (2 independent circuits) in place of the single-channel PI74LPT16373AV?

A: Yes. Dual-channel variants such as SN74LVC16373ADL and SN74LVC16373ADLR maintain identical pin assignments for the primary circuit while providing additional independent circuits. The original circuit functionality remains unchanged. Verify PCB layout does not conflict with the enhanced functionality.

Q: What is the significance of propagation delay differences between substitute parts?

A: Propagation delay determines the time required for output changes following input transitions. The PI74LPT16373AV specifies 1.5ns maximum delay. Substitutes with equal or lower delay (CLVC16373AMDLREP at 1.3ns) provide direct compatibility. Parts with higher delay (74LCX16373MTDX at 5.4ns) may introduce timing constraints in high-speed applications and require system-level timing verification.

Q: Are there package compatibility considerations between SSOP, TSSOP, and TVSOP variants?

A: These are distinct package types with different physical dimensions and pin spacing. SSOP (0.295" width) and TSSOP (0.240" width) are not interchangeable on the same PCB. TVSOP (0.173" width) is the most compact. Select substitutes matching the original 48-BSSOP package footprint unless PCB redesign is acceptable.

Q: Why is RoHS compliance important for substitute selection?

A: The original PI74LPT16373AV is RoHS non-compliant. Modern manufacturing and procurement standards increasingly require RoHS3 compliance. Substitutes such as CLVC16373AMDLREP, SN74LVC16373ADL, and SN74LVC16373ADLR meet current environmental regulations, reducing supply chain risk and regulatory exposure.

Q: What supply voltage range should I verify for my application?

A: The PI74LPT16373AV operates at 2.7V ~ 3.6V. Most substitutes support broader ranges (1.65V ~ 3.6V for Texas Instruments variants). Verify your system supply voltage falls within the substitute part's specified range. Parts with lower minimum voltage (1.65V) provide greater design flexibility for low-power applications.

Q: Can I substitute parts with different output current ratings?

A: The PI74LPT16373AV provides 24mA output drive. Substitutes with equal or higher current capability (24mA) are directly compatible. The 74LCX162373MTDX variant with 12mA output may be insufficient for high-capacitance loads or long trace lengths and requires load analysis before selection.

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