74LVTH574MTC Equivalent & Substitute Parts

Part Overview

The 74LVTH574MTC is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering in a 20-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The 74LVTH series operates at 150 MHz clock frequency with tri-state, non-inverted outputs suitable for digital logic applications requiring edge-triggered storage and output control.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVTH574MTC
Manufacturer	onsemi
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	4.6 ns
Trigger Type	Positive Edge
Current - Output High, Low	32 mA, 64 mA
Voltage - Supply	2.7V ~ 3.6V
Current - Quiescent (Iq)	190 µA
Input Capacitance	4 pF
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74LVTH574MTC is determined by the following critical parameters: D-type flip-flop function with 1 element and 8-bit configuration, positive edge trigger type, tri-state non-inverted output type, 150 MHz clock frequency capability, 20-TSSOP or compatible package format, supply voltage range of 2.7V to 3.6V, and operating temperature range of -40°C to 85°C.

Substitute parts are grouped into two categories:

Direct Substitutes (Same Base Product Number - 74LVTH574): Parts maintaining identical functional specifications, electrical parameters, and package compatibility. These include Texas Instruments manufactured variants with active product status: SN74LVTH574IPWREP, SN74LVTH574PW, and SN74LVTH574PWR. All direct substitutes feature 4.5 ns maximum propagation delay at 3.3V with 50 pF load and 3 pF input capacitance.

Similar Substitutes (Alternative Series or Package): Parts with equivalent functional performance but differing in series designation, package format, or propagation delay characteristics. These include SN74LVT574PWR (74LVT series with 6.6 ns propagation delay), SN74LVTH574DB and SN74LVTH574DBR (20-SSOP package variant), and SN74LVTH374IPWREP (74LVTH374 base product with identical electrical performance).

Parameter Comparison

Parameter	74LVTH574MTC (Main)	SN74LVTH574IPWREP	SN74LVTH574PW	SN74LVTH574PWR	SN74LVT574PWR	SN74LVTH574DB	SN74LVTH574DBR	SN74LVTH374IPWREP
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type
Number of Elements	1	1	1	1	1	1	1	1
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	4.6 ns	4.5 ns	4.5 ns	4.5 ns	6.6 ns	4.5 ns	4.5 ns	4.5 ns
Trigger Type	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge
Current - Output High, Low	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA	32 mA, 64 mA
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	3 pF	3 pF	3 pF	4 pF	3 pF	3 pF	3 pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-TSSOP (0.173", 4.40mm)	20-TSSOP (0.173", 4.40mm)	20-TSSOP (0.173", 4.40mm)	20-TSSOP (0.173", 4.40mm)	20-TSSOP (0.173", 4.40mm)	20-SSOP (0.209", 5.30mm)	20-SSOP (0.209", 5.30mm)	20-TSSOP (0.173", 4.40mm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	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

For new designs and production applications, Texas Instruments SN74LVTH574PWR is the primary recommended substitute. This part maintains active product status, ROHS3 compliance, and MSL 1 rating identical to the original 74LVTH574MTC. The SN74LVTH574PWR is supplied in Tape & Reel packaging with 5400 pieces currently in stock, providing supply chain continuity and cost efficiency.

SN74LVTH574IPWREP and SN74LVTH574PW are functionally equivalent alternatives with identical electrical performance and active status. SN74LVTH574IPWREP is available in Tape & Reel format with 1046 pieces in stock, while SN74LVTH574PW is supplied in Tube packaging with 869 pieces in stock.

For applications where package footprint flexibility is acceptable, SN74LVTH574DB and SN74LVTH574DBR provide equivalent functionality in the 20-SSOP package format (0.209" width versus 0.173" for TSSOP). Both maintain active product status and full compliance certifications.

SN74LVT574PWR represents a similar substitute with 74LVT series designation. This part exhibits 6.6 ns maximum propagation delay compared to 4.5 ns for 74LVTH variants, making it suitable for applications where timing margins accommodate the increased delay. This part is active with 2730 pieces in stock.

SN74LVTH374IPWREP is functionally equivalent with identical electrical specifications and active status, though it carries a different base product number (74LVTH374 versus 74LVTH574). This part is available in Tape & Reel format with 1046 pieces in stock.

All substitute parts maintain the required supply voltage range of 2.7V to 3.6V, operating temperature range of -40°C to 85°C, and tri-state non-inverted output configuration necessary for direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can SN74LVTH574PWR directly replace 74LVTH574MTC without PCB modifications?

A: Yes. SN74LVTH574PWR maintains identical pin configuration, package footprint (20-TSSOP), electrical specifications, and functional behavior. No PCB layout changes are required for direct substitution.

Q: What is the difference between 20-TSSOP and 20-SSOP packages?

A: The 20-TSSOP package measures 0.173 inches (4.40mm) in width, while the 20-SSOP package measures 0.209 inches (5.30mm) in width. Both packages contain identical pin counts and electrical functionality. PCB footprint modifications are necessary when switching between these package formats.

Q: Why does SN74LVT574PWR have a higher propagation delay (6.6 ns versus 4.5 ns)?

A: SN74LVT574PWR belongs to the 74LVT series, which represents an earlier generation logic family compared to the 74LVTH series. The increased propagation delay reflects different internal circuit design. This part remains functionally compatible for applications where timing margins accommodate the additional delay.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory requirements of the original 74LVTH574MTC.

Q: What is the difference between SN74LVTH574IPWREP and SN74LVTH574PWR?

A: Both parts are functionally identical with 4.5 ns propagation delay and active product status. The primary difference is packaging format: SN74LVTH574IPWREP is supplied in Tape & Reel format, while SN74LVTH574PWR is also supplied in Tape & Reel format. Inventory availability differs, with SN74LVTH574PWR offering higher stock levels (5400 pieces versus 616 pieces).

Q: Can SN74LVTH374IPWREP be used as a substitute despite the different base product number?

A: Yes. SN74LVTH374IPWREP maintains identical electrical specifications, package format, supply voltage, operating temperature range, and output configuration. The different base product number reflects internal functional differences that do not affect compatibility in applications requiring the specified electrical and mechanical parameters.

Q: What packaging options are available for 74LVTH574 substitutes?

A: Texas Instruments supplies 74LVTH574 equivalents in three packaging formats: Tape & Reel (SN74LVTH574IPWREP, SN74LVTH574PWR), Tube (SN74LVTH574PW), and alternative package formats (20-SSOP for SN74LVTH574DB and SN74LVTH574DBR). Selection depends on production volume requirements and assembly equipment compatibility.

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