74LVTH574PW,118 Equivalent & Substitute Parts

Part Overview

The 74LVTH574PW,118 is a D-Type flip-flop logic integrated circuit manufactured by NXP USA Inc., designed for 8-bit data storage and transfer applications. This device features positive edge triggering, tri-state non-inverted outputs, and operates across a 2.7V to 3.6V supply voltage range. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning. Active alternatives from Texas Instruments and onsemi provide functional equivalence with improved availability and product status.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVTH574PW,118
Manufacturer	NXP USA Inc.
Category	Logic
Type	D-Type Flip Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Clock Frequency	150 MHz
Max Propagation Delay @ 3.3V, 50pF	5.9 ns
Trigger Type	Positive Edge
Voltage - Supply	2.7V ~ 3.6V
Current - Output High, Low	32mA, 64mA
Current - Quiescent (Iq)	190 µA
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Operating Temperature	-40°C ~ 85°C (TA)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74LVTH574PW,118 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Type: D-Type Flip Flop
Number of Elements: 1
Number of Bits per Element: 8
Output Type: Tri-State, Non-Inverted
Trigger Type: Positive Edge
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Voltage - Supply: 2.7V ~ 3.6V
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount

Performance Parameters (Allowable Variation):

Clock Frequency: 150 MHz (minimum requirement)
Max Propagation Delay @ 3.3V, 50pF: ≤5.9 ns
Current - Output High, Low: 32mA, 64mA
Current - Quiescent (Iq): 190 µA
Input Capacitance: 3-4 pF

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (active product status with equivalent or superior performance characteristics).

Parameter Comparison

Parameter	74LVTH574PW,118 (NXP)	74LVT574PW/AUJ (NXP)	SN74LVTH574IPWREP (TI)	SN74LVTH574PW (TI)	SN74LVTH574PWR (TI)	74LVT574MTCX (onsemi)	74LVTH574MTCX (onsemi)	SN74LVT574PWR (TI)
Manufacturer	NXP USA Inc.	NXP USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	onsemi	Texas Instruments
Series	74LVTH	74LVT	74LVTH	74LVTH	74LVTH	74LVT	74LVTH	74LVT
Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type
Number of Bits per Element	8	8	8	8	8	8	8	8
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	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	150 MHz	150 MHz	150 MHz
Max Propagation Delay @ 3.3V, 50pF	5.9 ns	5.9 ns	4.5 ns	4.5 ns	4.5 ns	4.6 ns	4.6 ns	6.6 ns
Trigger Type	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge
Current - Output High, Low	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Voltage - Supply	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Current - Quiescent (Iq)	190 µA	190 µA	190 µA	190 µA	190 µA	190 µA	190 µA	190 µA
Input Capacitance	4 pF	4 pF	3 pF	3 pF	3 pF	4 pF	4 pF	4 pF
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Last Time Buy	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation - Active Product Status:

SN74LVTH574PWR (Texas Instruments) and SN74LVTH574PW (Texas Instruments) are the preferred substitutes. Both parts maintain active product status with full manufacturer support, superior propagation delay performance (4.5 ns versus 5.9 ns), and extensive inventory availability (5400 Pcs and 869 Pcs respectively). These parts are supplied in Tape & Reel and Tube packaging formats, supporting high-volume and low-volume procurement requirements.

Secondary Recommendation - Parametric Equivalence:

74LVT574PW/AUJ (NXP USA Inc.) provides parametric equivalence with identical electrical specifications and active product status. This part maintains the original 74LVT series designation and is suitable for direct substitution where NXP component continuity is required.

Alternative Options - Last Time Buy Status:

74LVT574MTCX (onsemi) and 74LVTH574MTCX (onsemi) are available as alternatives with Last Time Buy product status. These parts deliver equivalent performance with propagation delays of 4.6 ns and maintain full compliance with RoHS3 and REACH requirements. Procurement planning should account for the Last Time Buy status when considering long-term supply chain requirements.

Compliance Verification:

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory alignment with the original 74LVTH574PW,118 specification.

Frequently Asked Questions (FAQ)

Q: Can the 74LVTH574PW,118 be directly replaced with SN74LVTH574PWR?

A: Yes. The SN74LVTH574PWR is a direct functional substitute. Both parts share identical electrical specifications across all critical parameters: 8-bit D-Type flip-flop architecture, tri-state non-inverted outputs, positive edge triggering, 2.7V to 3.6V supply voltage range, and 20-TSSOP package format. The SN74LVTH574PWR offers improved propagation delay performance (4.5 ns versus 5.9 ns) and active product status.

Q: What is the difference between 74LVT and 74LVTH series parts?

A: Both series are functionally equivalent D-Type flip-flops with identical electrical performance parameters for this application. The 74LVT series (represented by 74LVT574PW/AUJ and SN74LVT574PWR) and 74LVTH series (represented by SN74LVTH574PWR and 74LVTH574MTCX) share the same core specifications. Series designation reflects manufacturer product line organization rather than functional differences.

Q: Are there packaging differences between substitute options?

A: All substitute parts use the 20-TSSOP (0.173", 4.40mm Width) package format, ensuring mechanical and electrical compatibility. Packaging format variations exist at the supply level: SN74LVTH574PWR is supplied in Tape & Reel format, SN74LVTH574PW in Tube format, and onsemi parts in Cut Tape & Digi-Reel format. These variations affect procurement and handling but do not impact circuit performance.

Q: Why is the 74LVTH574PW,118 classified as obsolete?

A: The original 74LVTH574PW,118 from NXP USA Inc. has reached end-of-life status. Active alternatives from Texas Instruments and onsemi provide equivalent functionality with continued manufacturer support and improved availability. Substitution is necessary for new designs and ongoing production requirements.

Q: What is the significance of Last Time Buy status for onsemi parts?

A: Last Time Buy status indicates that onsemi will accept orders for a limited period before discontinuing the product. Existing inventory is available (74LVT574MTCX: 2090 Pcs; 74LVTH574MTCX: 4133 Pcs), but long-term supply cannot be guaranteed. For applications requiring extended product availability, Texas Instruments active products are recommended.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the original 74LVTH574PW,118. Moisture Sensitivity Level 1 (Unlimited) is consistent across all parts, eliminating moisture handling concerns during assembly and storage.

Q: What is the propagation delay difference between substitute options?

A: Texas Instruments parts (SN74LVTH574PWR, SN74LVTH574PW, SN74LVTH574IPWREP) deliver 4.5 ns propagation delay at 3.3V with 50pF load. onsemi parts (74LVT574MTCX, 74LVTH574MTCX) deliver 4.6 ns. NXP 74LVT574PW/AUJ matches the original specification at 5.9 ns. SN74LVT574PWR delivers 6.6 ns. All values remain within acceptable operating margins for 150 MHz clock frequency applications.

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