74F08SJX AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74F08SJX is a 4-channel 2-input AND gate logic IC manufactured by onsemi in a 14-SOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74F08 series provides standard AND gate functionality with consistent electrical characteristics across compatible variants.

Key Parameters

Parameter	Specification
Logic Type	AND Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	5.6ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Series	74F

Substitute Part Grouping Explanation

Substitution of the 74F08SJX is determined by matching the following critical parameters: logic type (AND Gate), circuit count (4 channels), input count (2 inputs per channel), supply voltage range (4.5V ~ 5.5V), output current specifications (1mA high, 20mA low), input logic levels (0.8V low, 2V high), propagation delay (5.6ns @ 5V, 50pF), operating temperature range (0°C ~ 70°C), and surface mount configuration.

The substitute parts are grouped as follows:

Direct Functional Equivalents: SN74F08D, SN74F08DR, and SN74F08NSR all meet the complete electrical and functional specifications of the 74F08SJX. These parts differ only in packaging format and product status, not in core logic performance or electrical characteristics.

Parameter Comparison

Parameter	74F08SJX (onsemi)	SN74F08D (TI)	SN74F08DR (TI)	SN74F08NSR (TI)
Logic Type	AND Gate	AND Gate	AND Gate	AND Gate
Number of Circuits	4	4	4	4
Number of Inputs	2	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA	1mA, 20mA	1mA, 20mA	1mA, 20mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	5.6ns @ 5V, 50pF	5.6ns @ 5V, 50pF	5.6ns @ 5V, 50pF	5.6ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Series	74F	74F	74F	74F
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SN74F08DR (Texas Instruments) is the primary substitute for new designs and production. This part carries Active product status, ROHS3 compliance, and is available in Tape & Reel packaging suitable for automated assembly. Current inventory of 4050 units supports production requirements.

SN74F08NSR (Texas Instruments) provides an alternative with Active product status and ROHS3 compliance. This variant is available in 14-SO package format with 5179 units in stock, offering the highest current inventory level among substitutes.

SN74F08D (Texas Instruments) is suitable for applications where Last Time Buy status is acceptable. This part maintains full electrical equivalence and ROHS3 compliance with 2100 units available in Tube packaging.

All three substitutes are manufactured by Texas Instruments and maintain identical electrical performance to the 74F08SJX across all specified parameters. Selection should prioritize product status (Active preferred), packaging format requirements for assembly processes, and inventory availability for project timelines.

Frequently Asked Questions (FAQ)

Q: Can SN74F08DR replace 74F08SJX directly in existing designs? A: Yes. The SN74F08DR meets all electrical specifications of the 74F08SJX, including supply voltage (4.5V ~ 5.5V), output current (1mA, 20mA), input logic levels (0.8V low, 2V high), and propagation delay (5.6ns @ 5V, 50pF). Both are surface mount devices with identical logic functionality.

Q: What is the difference between SN74F08D, SN74F08DR, and SN74F08NSR? A: These parts are electrically identical but differ in packaging and product status. SN74F08D uses Tube packaging and has Last Time Buy status. SN74F08DR uses Tape & Reel packaging and is Active. SN74F08NSR uses 14-SO package format and is Active. All three are ROHS3 compliant.

Q: Are there package compatibility considerations? A: The 74F08SJX uses 14-SOP (0.209", 5.30mm width). SN74F08D and SN74F08DR use 14-SOIC (0.154", 3.90mm width). SN74F08NSR uses 14-SOIC (0.209", 5.30mm width). Verify PCB footprint compatibility before selection, as the 0.154" and 0.209" widths differ.

Q: Which substitute has the best long-term availability? A: SN74F08DR and SN74F08NSR both carry Active product status, indicating ongoing production. SN74F08D is Last Time Buy, indicating limited future availability. For new designs, SN74F08DR or SN74F08NSR are recommended.

Q: Do all substitutes meet RoHS requirements? A: Yes. SN74F08D, SN74F08DR, and SN74F08NSR are all ROHS3 compliant. The original 74F08SJX RoHS status was not specified in available data.

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