74HC08DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC08DB,118 is a 4-channel 2-input AND gate logic IC manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 74HC series AND gate provides standard logic gating functionality across industrial and commercial applications with supply voltage range of 2V to 6V and operating temperature range of -40°C to 125°C.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	15ns
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SSOP (0.209", 5.30mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74HC08DB,118 is determined by the following critical parameters:

Logic function: 4-channel 2-input AND gate
Electrical specifications: 2V ~ 6V supply voltage, 2 µA quiescent current, 5.2mA output current
Input/output logic levels: 0.5V ~ 1.8V (low), 1.5V ~ 4.2V (high)
Propagation delay: 15ns maximum at 6V, 50pF load
Operating temperature range: -40°C ~ 125°C
Surface mount packaging: 14-SSOP or 14-TSSOP footprints
Compliance: ROHS3, MSL 1

Substitute parts maintain identical logic function and electrical performance within specified tolerances. Package variations (14-SSOP vs. 14-TSSOP) are mechanically compatible for PCB layout purposes. Propagation delay variations up to 20ns remain within acceptable logic timing margins for standard applications.

Parameter Comparison

Part Number	Manufacturer	Package	Status	Voltage Supply	Quiescent Current	Propagation Delay @ 6V	Operating Temp
74HC08DB,118	Nexperia USA Inc.	14-SSOP	Obsolete	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C
74HC08PW,118	Nexperia USA Inc.	14-TSSOP	Active	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C
CD74HC08M96	Texas Instruments	14-SOIC	Active	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C
MM74HC08MTCX	onsemi	14-TSSOP	Active	2V ~ 6V	2 µA	20ns	-40°C ~ 85°C
CD74HC08PW	Texas Instruments	14-TSSOP	Discontinued	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C
CD74HC08PWR	Texas Instruments	14-TSSOP	Active	2V ~ 6V	2 µA	15ns	-55°C ~ 125°C
MC74HC08ADTR2G	onsemi	14-TSSOP	Active	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C
SN74HC08DBR	Texas Instruments	14-SSOP	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C
SN74HC08IPWRG4Q1	Texas Instruments	14-TSSOP	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C
SN74HC08IPWRQ1	Texas Instruments	14-TSSOP	Active	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C
SN74HC08PW	Texas Instruments	14-TSSOP	Discontinued	2V ~ 6V	2 µA	17ns	-40°C ~ 85°C

Engineering Selection Recommendations

For direct replacement of the obsolete 74HC08DB,118, prioritize active status parts with matching 14-SSOP package geometry. The SN74HC08DBR from Texas Instruments provides identical package footprint and active product status, ensuring seamless PCB integration without layout modifications.

For new designs with layout flexibility, 14-TSSOP variants offer superior availability and extended product lifecycles. The 74HC08PW,118 from Nexperia maintains identical electrical performance and active status. The CD74HC08PWR and MC74HC08ADTR2G from Texas Instruments and onsemi respectively provide extended operating temperature ranges (-55°C to 125°C) suitable for industrial applications.

The MC74HC08ADTR2G demonstrates improved performance characteristics with 1 µA quiescent current and 13ns propagation delay, providing margin for timing-critical applications while maintaining full compatibility with the original specification.

Automotive-qualified variants SN74HC08IPWRG4Q1 and SN74HC08IPWRQ1 are available for applications requiring AEC-Q100 certification.

Frequently Asked Questions (FAQ)

Q: Can I use a 14-TSSOP package part as a direct replacement for the 14-SSOP 74HC08DB,118?

A: Yes, with PCB layout verification. Both packages are surface mount with identical pin counts and electrical specifications. The 14-TSSOP (0.173" width) is narrower than 14-SSOP (0.209" width), requiring confirmation that the footprint fits your PCB design. Pin pitch and functionality are identical.

Q: What is the difference between the propagation delay specifications (15ns vs. 17ns vs. 20ns)?

A: All variants meet the 74HC08 logic family specification. Propagation delay variations reflect manufacturing process differences between vendors. For standard logic applications, all delays are functionally equivalent. Timing-critical designs should use the MC74HC08ADTR2G (13ns) for additional margin.

Q: Are discontinued parts suitable for new production designs?

A: No. CD74HC08PW and SN74HC08PW are discontinued at DiGi Electronics and should not be selected for new designs. Use active status parts: 74HC08PW,118, CD74HC08PWR, MC74HC08ADTR2G, or SN74HC08DBR.

Q: What is the significance of the quiescent current difference in MC74HC08ADTR2G (1 µA vs. 2 µA)?

A: The 1 µA specification indicates lower standby power consumption. This is a performance advantage for battery-powered or low-power applications. All parts remain fully compatible with the original 2 µA specification.

Q: Do I need automotive qualification for my application?

A: Only if your application requires AEC-Q100 certification. The SN74HC08IPWRG4Q1 and SN74HC08IPWRQ1 are automotive-qualified variants. Standard industrial applications use non-qualified parts.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the part has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitutes maintain MSL 1 rating.

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