SN74HC08PWT Equivalent & Substitute Parts

Part Overview

The SN74HC08PWT is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design and production requirements. The 74HC08 logic family provides standard AND gate functionality across multiple manufacturers, with several active alternatives available that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V ~ 6V
Operating Temperature	-40°C ~ 85°C
Package Type	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SN74HC08PWT is determined by the following criteria:

Mandatory Compatibility Parameters:

Logic Type: AND Gate (4 channels, 2 inputs per channel)
Package: 14-TSSOP surface mount form factor
Voltage Supply: 2V ~ 6V minimum range
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant

Acceptable Variation Parameters:

Current - Quiescent (Max): 1 µA to 20 µA
Current - Output High/Low: 5.2mA (consistent across all substitutes)
Input Logic Levels: 0.5V ~ 1.8V (Low), 1.5V ~ 4.2V (High)
Max Propagation Delay: 13ns to 20ns @ 6V, 50pF
Operating Temperature: -40°C to 125°C (extended range acceptable)
Product Status: Active preferred; discontinued acceptable if parameters match

Substitutes are grouped by manufacturer and packaging configuration while maintaining full electrical and mechanical interchangeability within the 74HC08 logic family.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temp	Packaging
SN74HC08PWT	Texas Instruments	Discontinued	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-TSSOP (TSSOP)
SN74HC08PWR	Texas Instruments	Active	2.1V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-TSSOP (CT & Digi-Reel)
SN74HC08IPWRG4Q1	Texas Instruments	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-TSSOP (TR)
SN74HC08IPWRQ1	Texas Instruments	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C	14-TSSOP (TR)
MC74HC08ADTR2G	onsemi	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-TSSOP (CT & Digi-Reel)
74HC08PW,118	Nexperia USA Inc.	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP (TR)
74HC08T14-13	Diodes Incorporated	Active	2V ~ 6V	20 µA	15ns	-40°C ~ 125°C	14-TSSOP (TR)
MM74HC08MTC	onsemi	Active	2V ~ 6V	2 µA	20ns	-40°C ~ 85°C	14-TSSOP (Tube)
MM74HC08MTCX	onsemi	Active	2V ~ 6V	2 µA	20ns	-40°C ~ 85°C	14-TSSOP (TR)

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): SN74HC08PWR is the primary direct substitute from Texas Instruments. It maintains identical electrical specifications and is available in active production status with high inventory levels (10,400 pcs). The voltage supply range minimum increases marginally to 2.1V, which is acceptable for standard 5V and 3.3V logic applications.

Automotive-Grade Alternatives: SN74HC08IPWRG4Q1 and SN74HC08IPWRQ1 are automotive-qualified variants (AEC-Q100) from Texas Instruments, suitable for applications requiring automotive-grade components. Both maintain identical electrical performance to the original part.

Cross-Manufacturer Substitutes: MC74HC08ADTR2G (onsemi) offers superior performance with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 17ns), plus extended operating temperature range (-55°C ~ 125°C). This part is suitable for applications requiring enhanced performance margins.

74HC08PW,118 (Nexperia USA Inc.) provides active production status with extended temperature range (-40°C ~ 125°C) and moderate propagation delay (15ns). High inventory availability (42,412 pcs) supports volume production.

74HC08T14-13 (Diodes Incorporated) is available in active production with extended temperature range. Higher quiescent current (20 µA) may be a consideration for low-power applications.

Packaging Considerations: MM74HC08MTC and MM74HC08MTCX (onsemi) are available in tube and tape & reel packaging respectively. Both maintain standard electrical specifications and are suitable for applications where packaging format is a selection criterion.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC08PWR as a direct replacement for SN74HC08PWT? A: Yes. SN74HC08PWR is electrically and mechanically compatible. The primary difference is product status (active vs. discontinued) and packaging format (Cut Tape & Digi-Reel vs. standard TSSOP). Both operate within 2V ~ 6V supply range with identical propagation delay and output current specifications.

Q: What is the difference between the Texas Instruments automotive-grade parts (SN74HC08IPWRG4Q1 and SN74HC08IPWRQ1)? A: Both are AEC-Q100 qualified automotive-grade variants with identical electrical specifications. The difference lies in qualification level designation. Both are suitable for automotive applications requiring qualified components.

Q: Does MC74HC08ADTR2G offer performance advantages over the original SN74HC08PWT? A: Yes. MC74HC08ADTR2G provides lower quiescent current (1 µA vs. 2 µA), faster propagation delay (13ns vs. 17ns), and extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). These characteristics make it suitable for applications requiring enhanced performance or wider temperature operation.

Q: Are all substitute parts in 14-TSSOP packaging? A: Yes. All listed substitutes use 14-TSSOP (0.173", 4.40mm Width) surface mount packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Which substitute has the highest inventory availability? A: 74HC08PW,118 (Nexperia USA Inc.) has the highest inventory at 42,412 pcs, followed by MC74HC08ADTR2G (onsemi) at 30,200 pcs. Both support high-volume production requirements.

Q: Can I use parts with extended operating temperature ranges in standard applications? A: Yes. Parts with extended temperature ranges (-40°C ~ 125°C) are fully compatible with standard applications operating within -40°C ~ 85°C. Extended range provides additional design margin without performance penalty.

Q: What is the significance of the packaging format (CT & Digi-Reel, Tape & Reel, Tube)? A: Packaging format affects supply chain logistics and assembly process compatibility. Cut Tape & Digi-Reel and Tape & Reel formats are standard for automated assembly. Tube packaging is suitable for manual assembly or lower-volume applications. All formats contain identical components.

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