SN74HCT00PWT NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74HCT00PWT is a 4-channel 2-input NAND gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is classified as obsolete, with 688 units currently in stock. The SN74HCT00PWT operates within the 74HCT logic family standard, delivering TTL-compatible switching performance suitable for digital logic applications requiring NAND gate functionality.

Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, procurement flexibility, and long-term supply chain management. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer functional compatibility within defined parameter tolerances.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	4mA, 4mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	18ns @ 5.5V, 50pF
Operating Temperature	-40°C ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HCT00PWT is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic Type: NAND Gate (4 channels, 2 inputs per channel)
Package / Case: 14-TSSOP surface mount form factor
Voltage - Supply: 4.5V ~ 5.5V operating range
Input Logic Levels: Low 0.8V, High 2V
Output Current: 4mA minimum for both high and low states
Moisture Sensitivity Level: 1 (Unlimited)
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents – Parts with identical electrical specifications and packaging, differing only in packaging format (tape & reel vs. cut tape).
Direct Manufacturer Alternatives – Parts from alternative manufacturers meeting the same functional and electrical requirements.
Manufacturer Recommended Substitutes – Parts qualified by original equipment manufacturers or offering enhanced specifications (automotive grade, extended temperature range).

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits / Inputs	Voltage Supply	Quiescent Current (Max)	Output Current (H/L)	Propagation Delay	Operating Temp	Package	Product Status	Inventory
SN74HCT00PWT	Texas Instruments	NAND Gate	4 / 2	4.5V ~ 5.5V	2 µA	4mA, 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-TSSOP	Obsolete	688 Pcs
SN74HCT00APWR	Texas Instruments	NAND Gate	4 / 2	4.5V ~ 5.5V	2 µA	4mA, 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-TSSOP	Obsolete	3400 Pcs
SN74HCT00PWR	Texas Instruments	NAND Gate	4 / 2	4.5V ~ 5.5V	2 µA	4mA, 4mA	18ns @ 5.5V, 50pF	-40°C ~ 85°C	14-TSSOP	Active	250738 Pcs
74HCT00PW,118	NXP Semiconductors	NAND Gate	4 / 2	Not specified	Not specified	Not specified	Not specified	Not specified	14-TSSOP	Active	14753 Pcs
74HCT00PW-Q100,118	Nexperia USA Inc.	NAND Gate	4 / 2	4.5V ~ 5.5V	40 µA	4mA, 4mA	12ns @ 4.5V, 50pF	-40°C ~ 125°C	14-TSSOP	Active	3304 Pcs
74HCT00T14-13	Diodes Incorporated	NAND Gate	4 / 2	4.5V ~ 5.5V	20 µA	4mA, 4mA	22ns @ 4.5V, 50pF	-40°C ~ 125°C	14-TSSOP	Active	10400 Pcs
MM74HCT00MTCX	Fairchild Semiconductor	NAND Gate	4 / 2	4.5V ~ 5.5V	1 µA	4.8mA, 4.8mA	23ns @ 5V, 50pF	-40°C ~ 85°C	14-TSSOP	Active	1441 Pcs

Engineering Selection Recommendations

Primary Recommendation: SN74HCT00PWR

The SN74HCT00PWR from Texas Instruments is the preferred substitute for the obsolete SN74HCT00PWT. This part maintains identical electrical specifications (2 µA quiescent current, 18ns propagation delay, -40°C to 85°C operating range) and packaging (14-TSSOP). The SN74HCT00PWR holds active product status with substantial inventory availability (250,738 units), ensuring long-term supply chain reliability. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Secondary Recommendation: 74HCT00PW-Q100,118

The 74HCT00PW-Q100,118 from Nexperia USA Inc. offers enhanced specifications suitable for automotive applications. This part is AEC-Q100 qualified and extends the operating temperature range to -40°C to 125°C. The quiescent current specification increases to 40 µA, and propagation delay improves to 12ns at 4.5V. This part is recommended for designs requiring automotive-grade qualification or extended temperature performance.

Tertiary Recommendation: 74HCT00T14-13

The 74HCT00T14-13 from Diodes Incorporated provides an active-status alternative with extended temperature range (-40°C to 125°C). Quiescent current is specified at 20 µA with propagation delay of 22ns at 4.5V. This part maintains full compatibility with the original SN74HCT00PWT electrical interface and 14-TSSOP packaging.

Alternative: MM74HCT00MTCX

The MM74HCT00MTCX from Fairchild Semiconductor delivers the lowest quiescent current specification (1 µA) with slightly elevated output current (4.8mA). Operating temperature range matches the original part (-40°C to 85°C). This part is suitable for low-power applications where quiescent current minimization is critical.

Not Recommended: 74HCT00PW,118

The 74HCT00PW,118 from NXP Semiconductors lacks complete electrical parameter documentation in the provided data. Substitution cannot be confirmed without full specification verification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74HCT00PWT with SN74HCT00PWR?

A: Yes. Both parts are Texas Instruments 74HCT NAND gate ICs with identical electrical specifications (4.5V–5.5V supply, 2 µA quiescent current, 18ns propagation delay) and 14-TSSOP packaging. The primary difference is product status: SN74HCT00PWT is obsolete while SN74HCT00PWR is active with higher inventory availability.

Q: What is the difference between the packaging formats listed (Tape & Reel vs. Cut Tape)?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® refer to supply formats for surface mount components. Both formats contain identical parts in the same 14-TSSOP package. Tape & Reel is standard for high-volume automated assembly, while Cut Tape is suitable for lower-volume or mixed-component orders. The electrical and mechanical specifications remain unchanged.

Q: Are the Nexperia and Diodes Incorporated parts compatible with my existing design?

A: The 74HCT00PW-Q100,118 (Nexperia) and 74HCT00T14-13 (Diodes) are functionally compatible with the SN74HCT00PWT. Both maintain the 4-channel 2-input NAND gate configuration, 14-TSSOP package, and 4.5V–5.5V supply voltage. However, verify your design's tolerance for the following parameter variations: quiescent current (40 µA and 20 µA respectively, versus 2 µA original), propagation delay (12ns and 22ns respectively, versus 18ns original), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C original).

Q: Why does the Nexperia part have higher quiescent current?

A: The 74HCT00PW-Q100,118 is qualified to AEC-Q100 automotive standards with extended temperature range (-40°C to 125°C). Automotive-grade components typically exhibit higher quiescent current specifications due to enhanced reliability and temperature stability requirements across the extended operating range.

Q: Is the Fairchild MM74HCT00MTCX suitable for battery-powered applications?

A: The MM74HCT00MTCX offers the lowest quiescent current (1 µA) among available substitutes, making it suitable for low-power applications. However, verify that the slightly elevated output current (4.8mA versus 4mA) and propagation delay (23ns versus 18ns) meet your circuit's timing and drive requirements.

Q: What compliance certifications apply to all substitute parts?

A: All recommended substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original SN74HCT00PWT. The 74HCT00PW-Q100,118 additionally holds AEC-Q100 automotive qualification. Verify REACH and ECCN compliance requirements for your specific application and region.

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