74F10SCX NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74F10SCX is a NAND Gate IC featuring 3 channels with 3 inputs per channel in a 14-SOIC surface mount package, manufactured by onsemi. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74F series logic family provides standard TTL-compatible switching functionality suitable for digital logic applications requiring NAND gate operations.

Key Parameters

Parameter	Value
Logic Type	NAND Gate
Number of Circuits	3
Number of Inputs	3
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	5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74F10SCX is determined by strict equivalence across the following critical parameters:

Logic Type: NAND Gate with 3 channels and 3 inputs per channel
Voltage Supply Range: 4.5V ~ 5.5V
Input/Output Logic Levels: Low 0.8V, High 2V
Output Current Capability: 1mA (High), 20mA (Low)
Propagation Delay: 5ns @ 5V, 50pF
Operating Temperature Range: 0°C ~ 70°C
Mounting Type: Surface Mount
Base Product Number: 74F10

Substitute parts are grouped by their relationship to the main part:

Direct Manufacturer Equivalent (SN74F10D): Identical electrical specifications and 14-SOIC package footprint. Differs in product status (Last Time Buy) and packaging format (Tube).

Similar Manufacturer Part (SN74F10NSR): Meets all electrical specifications. Package variant uses 14-SO with different physical dimensions (0.209", 5.30mm Width vs. 0.154", 3.90mm Width). Supplied in Tape & Reel format with Active product status.

Parametric Equivalent (SN74F10DR): Identical electrical specifications and 14-SOIC package footprint. Supplied in Tape & Reel format with Active product status.

Parameter Comparison

Parameter	74F10SCX (onsemi)	SN74F10D (TI)	SN74F10NSR (TI)	SN74F10DR (TI)
Logic Type	NAND Gate	NAND Gate	NAND Gate	NAND Gate
Number of Circuits	3	3	3	3
Number of Inputs	3	3	3	3
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	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 5V, 50pF	5ns @ 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
Supplier Device Package	14-SOIC	14-SOIC	14-SO	14-SOIC
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct PCB Replacement (Identical Footprint): SN74F10DR is the preferred choice. It maintains the exact 14-SOIC (0.154", 3.90mm Width) package footprint as the 74F10SCX, ensuring no PCB layout modifications are required. Active product status and ROHS3 compliance provide long-term availability and regulatory alignment.

For Long-Term Procurement: SN74F10NSR offers Active product status with ROHS3 compliance, ensuring sustained availability. The package variant (14-SO with 0.209", 5.30mm Width) requires PCB footprint verification before implementation.

For Last-Time-Buy Scenarios: SN74F10D provides an intermediate option with Last Time Buy status and ROHS3 compliance. The 14-SOIC package matches the original footprint, but procurement window is limited.

All three substitute parts meet the electrical specifications of the 74F10SCX and are suitable for applications requiring NAND gate logic with 3 channels and 3 inputs per channel in the 4.5V to 5.5V supply range.

Frequently Asked Questions (FAQ)

Q: Can SN74F10NSR be used as a direct replacement for 74F10SCX on existing PCBs? A: SN74F10NSR has different package dimensions (0.209", 5.30mm Width vs. 0.154", 3.90mm Width). PCB footprint compatibility must be verified before use. SN74F10DR or SN74F10D maintain the original footprint dimensions.

Q: What is the difference between SN74F10D and SN74F10DR? A: Both parts have identical electrical specifications and 14-SOIC package footprint. SN74F10D is supplied in Tube packaging with Last Time Buy status. SN74F10DR is supplied in Tape & Reel format with Active product status, offering better long-term availability.

Q: Are all substitute parts RoHS compliant? A: SN74F10D, SN74F10NSR, and SN74F10DR are all ROHS3 compliant. The original 74F10SCX does not specify RoHS status.

Q: Do the substitute parts have the same operating temperature range? A: Yes. All substitute parts operate across 0°C to 70°C, matching the 74F10SCX specification.

Q: Which substitute part should be selected for new designs? A: SN74F10DR is recommended for new designs. It provides Active product status, ROHS3 compliance, identical electrical specifications, and matching 14-SOIC package footprint.

Q: Are there any differences in propagation delay between the main part and substitutes? A: No. All parts specify 5ns maximum propagation delay at 5V with 50pF load, ensuring equivalent switching performance.

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