The CD74HC03E: Quad 2-input NAND gate with open-drain outputs. Each gate sinks current on the low side; the high side requires an external pull-up. Supply range is 2V to 6V. Propagation delay is 17ns at 6V with a 50pF load. If the board lives in an engine bay, a satellite, or a downhole tool, this gate handles the thermal swing.
CD74HC03E 74HC Quad 2-Input NAND Gate, Open Drain, 14-DIP
MPNCD74HC03E
End of Life
Texas Instruments 74HC series CD74HC03E, quad 2-input NAND gate with open-drain outputs, 2V to 6V supply, 14-DIP (0.300", 7.62mm), through-hole mount, -55°C to 125°C.
$0.68Ref. 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 | NAND Gate |
| Mounting | Through Hole |
| Supply voltage | 2V ~ 6V |
| Current - quiescent | 2 µA |
| Current - output high, low | -, 5.2mA |
| I/O channels | 2 |
| Operating temperature | -55°C ~ 125°C |
| Package | Tube |
| Features | Open Drain |
| Case | 14-DIP (0.300\", 7.62mm) |
| Number of circuits | 4 |
| Input logic level - low | 0.5V ~ 1.8V |
| Input logic level - high | 1.5V ~ 4.2V |
| Max propagation delay @ v, max CL | 17ns @ 6V, 50pF |
Product details
Frequently asked questions
Does CD74HC03E have open-drain outputs?
Yes, the CD74HC03E features open-drain outputs on all four NAND gates. That means each output can only sink current; an external pull-up resistor is required for the high state.
Can CD74HC03E replace a failed 74HC03?
Yes, the CD74HC03E is a standard 74HC03 quad NAND gate with open-drain outputs. It is a direct functional replacement for any 74HC03 in a 14-pin DIP package, provided the supply voltage and temperature range match the application.
What is the difference between CD74HC03E and SN74HC03N?
Both are 74HC-series quad 2-input NAND gates with open-drain outputs in a 14-pin DIP package. The CD74HC03E is from Texas Instruments; the SN74HC03N is also a TI part. Electrically they are identical — same logic function, same supply range, same propagation delay. The difference is the manufacturer's ordering code and possibly the date code or factory origin. For a repair or a BOM line, either works as a drop-in.