74F20PC NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74F20PC is a NAND Gate IC featuring 2 channels with 4 inputs per channel in a 14-MDIP package, manufactured by onsemi. This logic component operates within the 74F series and is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying compatible substitute parts is essential for system design continuity and procurement flexibility.

Substiute Parts

74F20PC

onsemiIn Stock: 346274F20PC Datasheet

Current PartRFQ

SN74F20N

Texas InstrumentsIn Stock: 4414SN74F20N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F20PC is determined by strict equivalence across the following critical parameters:

• Logic Function: NAND Gate with identical 2-channel, 4-input configuration
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), output current ratings (1mA high, 20mA low), and input logic thresholds (0.8V low, 2V high)
• Timing Performance: Maximum propagation delay characteristics at specified voltage and load conditions
• Operating Temperature Range: 0°C ~ 70°C
• Package Compatibility: 14-DIP through-hole mounting with 0.300" (7.62mm) pitch
• Base Product Series: 74F logic family

The SN74F20N from Texas Instruments meets all substitution criteria as a direct equivalent within the 74F20 base product family.

Parameter Comparison

Engineering Selection Recommendations

The SN74F20N is a direct functional equivalent to the 74F20PC. Selection between these parts is determined by availability and compliance requirements:

74F20PC (onsemi): Obsolete status limits future procurement viability. Current inventory of 3400 units is available but represents finite stock with no ongoing production.

SN74F20N (Texas Instruments): Active product status ensures long-term availability and supply chain continuity. Current inventory of 4400 units is in stock. RoHS3 compliance provides regulatory alignment for new designs. Propagation delay of 6ns at 5V, 50pF is marginally higher than the 74F20PC specification of 5ns but remains within acceptable timing margins for most 74F logic applications.

Both parts share identical pin configuration, electrical characteristics, and operating parameters, enabling direct substitution in existing circuit designs without modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74F20N replace the 74F20PC in existing designs?

A: Yes. Both parts are functionally equivalent with identical logic configuration (2-channel NAND gate, 4 inputs per channel), electrical specifications, and 14-DIP package pinout. Direct substitution is possible without circuit modification.

Q: What is the difference in propagation delay between these parts?

A: The 74F20PC specifies 5ns maximum propagation delay at 5V with 50pF load, while the SN74F20N specifies 6ns under identical conditions. This 1ns difference is within typical 74F logic timing margins and does not affect functional compatibility in standard applications.

Q: Are there compliance or regulatory differences?

A: The SN74F20N carries RoHS3 compliance certification, while the 74F20PC does not specify RoHS status. Both parts are REACH Unaffected and classified as EAR99 for export control purposes. For new designs subject to RoHS requirements, the SN74F20N is the appropriate selection.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: The 74F20PC specifies MSL 1 (Unlimited), indicating no moisture sensitivity constraints. The SN74F20N lists MSL as Not Applicable, also indicating no moisture-related handling restrictions.

Q: Are the packages physically identical?

A: Yes. Both parts use 14-DIP (0.300", 7.62mm) through-hole packaging with identical pin spacing and mechanical dimensions, enabling direct PCB footprint compatibility.