What the ratings mean for the BOM
The SN74HC21N: Quiescent current sits at 2 µA max. Output drive is 5.2 mA per pin (source and sink symmetric). Propagation delay is 19 ns at 6V with a 50 pF load.
SN74HC21N TI AND Gate, Dual 4-Input, 14-DIP, 2V-6V
MPNSN74HC21N
End of Life
Texas Instruments 74HC series, AND Gate, 2-Element, 4-Input, 14-PDIP, Through Hole, 2V to 6V supply, -40°C to 85°C.
$0.6Ref. price · indicative, final on quote
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | 74HC |
| Logic type | AND Gate |
| Mounting | Through Hole |
| Supply voltage | 2V ~ 6V |
| Current - quiescent | 2 µA |
| Current - output high, low | 5.2mA, 5.2mA |
| I/O channels | 4 |
| Operating temperature | -40°C ~ 85°C |
| Package | Tube |
| Case | 14-DIP (0.300\", 7.62mm) |
| Number of circuits | 2 |
| Input logic level - low | 0.5V ~ 1.8V |
| Input logic level - high | 1.5V ~ 4.2V |
| Max propagation delay @ v, max CL | 19ns @ 6V, 50pF |
Product details
Frequently asked questions
What is the difference between SN74HC21N and SN74HC21?
The SN74HC21N is the through-hole DIP variant; SN74HC21 (without the N suffix) typically refers to the same die in a surface-mount SOIC package. Logic function and electrical specs are identical — the choice is purely board-level assembly method.
Can I use SN74HC21N in a 5V system?
Yes. The supply range of 2V to 6V covers 5V operation directly. Input logic thresholds at 5V are 1.5V (low) and 4.2V (high), compatible with standard 5V CMOS and TTL outputs.