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Texas Instruments SN74HC20N — Logic ICs

SN74HC20N 74HC Dual 4-Input NAND Gate, 14-DIP, Active

MPNSN74HC20N
End of Life

Texas Instruments SN74HC20N, 74HC series, dual 4-input NAND gate, through-hole 14-DIP (0.300", 7.62mm), 2V to 6V supply, 2 µA quiescent, 5.2mA output, 19ns @ 6V/50pF, -40°C to 85°C.

$0.6Ref. price · indicative, final on quote
Texas Instruments SN74HC20N datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74HC20N specifications
ParameterValue
Series74HC
Logic typeNAND Gate
MountingThrough Hole
Supply voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low5.2mA, 5.2mA
I/O channels4
Operating temperature-40°C ~ 85°C
PackageTube
Case14-DIP (0.300\", 7.62mm)
Number of circuits2
Input logic level - low0.5V ~ 1.8V
Input logic level - high1.5V ~ 4.2V
Max propagation delay @ v, max CL19ns @ 6V, 50pF

Product details

Dual 4-input NAND gate in DIP-14

The SN74HC20N is a dual 4-input NAND gate from the 74HC high-speed CMOS logic family. Each of its two independent circuits accepts four inputs and delivers a NAND output, making it a direct logic building block for combinatorial gating, address decoding, or enable/disable functions in 2V to 6V systems. The through-hole 14-DIP package suits prototyping, breadboard work, and legacy board revisions where a hand-solderable footprint is preferred over surface-mount alternatives.

Supply range and speed

Rated for a 2V to 6V supply. Propagation delay is 19ns at 6V and 50pF load. Quiescent current maxes at 2 µA.

No automotive or military qualification is listed, so this is a commercial/industrial-grade device, not intended for under-hood or avionics deployment without additional screening.

Frequently asked questions

Where can I buy SN74HC20N?

The SN74HC20N is available to order through independent semiconductor distributors. Current pricing and stock levels are confirmed at quote time against an RFQ — submit a request for the latest availability.

What is the equivalent of SN74HC20N?

The SN74HC21N is a pin-compatible dual 4-input AND gate in the same 74HC series and 14-DIP package. It is not a direct NAND replacement, but shares the same supply range, speed, and footprint — verify the logic function against your design before substituting.

What are the input logic levels for SN74HC20N?

Input low-level threshold is 0.5V to 1.8V, and high-level is 1.5V to 4.2V, varying with the 2V to 6V supply voltage. These are CMOS-compatible levels; confirm compatibility with TTL-output drivers.

What is the pinout of SN74HC20N?

The SN74HC20N uses the standard 14-pin DIP pinout for a dual 4-input NAND gate. Pin assignments follow the 74HC logic convention: inputs A, B, C, D per gate, with outputs Y on pins 6 and 8. Refer to the device datasheet for the complete pin diagram.