SN74LVTH574IPWREP Equivalent & Substitute Parts

Part Overview

The SN74LVTH574IPWREP is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, configured as a single 8-bit element with positive edge triggering and tri-state non-inverted outputs. This device operates across a 2.7V to 3.6V supply range and is housed in a 20-TSSOP surface mount package. The part is currently in active production status with 616 units in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturing transitions.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74LVTH574IPWREP
Manufacturer	Texas Instruments
Base Product Number	74LVTH574
Type	D-Type Flip-Flop, 1 Element, 8 Bit
Output Type	Tri-State, Non-Inverted
Clock Frequency	150 MHz
Max Propagation Delay	4.5ns @ 3.3V, 50pF
Voltage Supply Range	2.7V ~ 3.6V
Current Output High/Low	32mA / 64mA
Quiescent Current	190 µA
Operating Temperature	-40°C ~ 85°C
Package Type	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN74LVTH574IPWREP are classified based on electrical and mechanical parameter alignment. The substitution logic is determined by the following critical parameters:

Electrical Equivalence Criteria:

D-Type flip-flop configuration with 1 element, 8-bit architecture
Tri-state, non-inverted output type
Clock frequency of 150 MHz
Propagation delay specifications at 3.3V, 50pF load
Output current ratings (32mA high, 64mA low)
Supply voltage range 2.7V ~ 3.6V
Quiescent current 190 µA
Operating temperature range -40°C ~ 85°C

Mechanical Equivalence Criteria:

20-TSSOP package (0.173", 4.40mm Width)
Surface mount mounting type
RoHS3 compliance
MSL Level 1 rating

Substitute Categories:

Parametric equivalents from Texas Instruments (SN74LVTH374PWR, SN74LVTH574PWR) maintain identical electrical specifications and active product status, differing only in packaging configuration or base product variant.

Direct manufacturer equivalents from onsemi (74LVTH574MTCX) provide functional equivalence with marginal propagation delay variance (4.6ns vs 4.5ns) and input capacitance tolerance (4pF vs 3pF), classified as Last Time Buy status.

Manufacturer-recommended alternatives (74LVT574MTCX) represent the 74LVT series variant with equivalent electrical performance and Last Time Buy status, suitable for applications where legacy series compatibility is acceptable.

Parameter Comparison

Parameter	SN74LVTH574IPWREP (Main)	SN74LVTH374PWR	SN74LVTH574PWR	74LVTH574MTCX	74LVT574MTCX
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	onsemi
Base Product Number	74LVTH574	74LVTH374	74LVTH574	74LVTH574	74LVT574
Type	D-Type, 1 Element, 8 Bit	D-Type, 1 Element, 8 Bit	D-Type, 1 Element, 8 Bit	D-Type, 1 Element, 8 Bit	D-Type, 1 Element, 8 Bit
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Clock Frequency	150 MHz	150 MHz	150 MHz	150 MHz	150 MHz
Max Propagation Delay @ 3.3V, 50pF	4.5ns	4.5ns	4.5ns	4.6ns	4.6ns
Voltage Supply Range	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Current Output High/Low	32mA / 64mA	32mA / 64mA	32mA / 64mA	32mA / 64mA	32mA / 64mA
Quiescent Current	190 µA	190 µA	190 µA	190 µA	190 µA
Input Capacitance	3 pF	3 pF	3 pF	4 pF	4 pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Last Time Buy	Last Time Buy
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	616 Pcs	3118 Pcs	5400 Pcs	4133 Pcs	2090 Pcs

Engineering Selection Recommendations

Texas Instruments Active Parts (SN74LVTH374PWR, SN74LVTH574PWR): These parts maintain full parametric equivalence with the SN74LVTH574IPWREP and carry active product status from Texas Instruments. Both are ROHS3 compliant with MSL Level 1 rating. Selection between these variants depends on specific base product number requirements within the 74LVTH series architecture. Higher inventory availability (3118 and 5400 units respectively) supports extended production runs.

onsemi Direct Equivalent (74LVTH574MTCX): This part provides direct functional equivalence with marginal propagation delay tolerance (4.6ns vs 4.5ns specification) and input capacitance variance (4pF vs 3pF). Classified as Last Time Buy status, this part remains suitable for new designs where onsemi sourcing is acceptable. ROHS3 compliance and MSL Level 1 rating are maintained.

onsemi Manufacturer-Recommended Alternative (74LVT574MTCX): This 74LVT series variant represents the manufacturer-recommended substitute path from onsemi. Electrical specifications remain equivalent with identical propagation delay tolerance and input capacitance characteristics. Last Time Buy status indicates this represents a legacy product line transition. Selection is appropriate for applications where 74LVT series compatibility aligns with system architecture.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH374PWR be used as a direct replacement for SN74LVTH574IPWREP?

A: Yes. Both parts are Texas Instruments D-type flip-flops with identical electrical specifications, 20-TSSOP packaging, and active product status. The difference lies in the base product number variant (374 vs 574), which reflects internal architectural differences that do not affect functional equivalence for standard D-type flip-flop applications.

Q: What is the significance of the propagation delay difference between Texas Instruments parts (4.5ns) and onsemi parts (4.6ns)?

A: The 0.1ns variance falls within typical manufacturing tolerance bands for logic devices. Both specifications meet the 150 MHz clock frequency requirement. Selection should consider system timing margins; applications with tight timing constraints may prefer the 4.5ns specification, while most general-purpose applications tolerate the 4.6ns variant.

Q: Why are onsemi parts classified as Last Time Buy?

A: Last Time Buy status indicates these products are in end-of-life transition. onsemi has designated these parts for discontinuation, though current inventory remains available. For new long-term production designs, Texas Instruments active parts (SN74LVTH574PWR or SN74LVTH374PWR) are recommended to ensure sustained supply availability.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the 20-TSSOP package with identical 0.173" width and 4.40mm dimensions. Surface mount placement and reflow profiles are compatible across all listed alternatives.

Q: What compliance certifications apply to all substitute parts?

A: All parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected across all variants. ECCN classification is EAR99 for all parts.

Q: Can 74LVT574MTCX be used in applications designed for 74LVTH574?

A: Yes. The 74LVT series represents an earlier generation within the same logic family. Electrical specifications, supply voltage range (2.7V ~ 3.6V), output current ratings, and operating temperature range are identical. The primary consideration is product status; 74LVT574MTCX is Last Time Buy, making it suitable for existing designs but not recommended for new development.

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