Texas Instruments 74HCT series, OR Gate, 4-ch 2-input, 14-DIP (0.300", 7.62mm), Through Hole, 4.5V ~ 5.5V supply, -55°C ~ 125°C, 24ns @ 4.5V/50pF.
| Parameter | Value |
|---|---|
| Series | 74HCT |
| Logic type | OR Gate |
| Mounting | Through Hole |
| Supply voltage | 4.5V ~ 5.5V |
| Current - quiescent | 2 µA |
| Current - output high, low | 4mA, 4mA |
| I/O channels | 2 |
| Operating temperature | -55°C ~ 125°C |
| Package | Tube |
| Case | 14-DIP (0.300\", 7.62mm) |
| Number of circuits | 4 |
| Input logic level - low | 0.8V |
| Input logic level - high | 2V |
| Max propagation delay @ v, max CL | 24ns @ 4.5V, 50pF |
The CD74HCT32E: Package is 14-DIP with 0.300" body width (14-PDIP). Through-hole mounting.
Maximum propagation delay is 24 ns at 4.5V with 50 pF load.
For a production BOM, this part carries no imminent obsolescence risk.
The CD74HCT32E is a quad 2-input OR gate in 74HCT logic. A functional equivalent in the same 74HCT family is the CD74HCT132M96, but that is a NAND gate with Schmitt-trigger inputs, not a direct OR-gate replacement. For a pin-compatible OR gate, stick with the 74HCT32 or 74HC32 in the same DIP footprint.
Yes, the CD74HCT32E can replace a 74HC32 in a 5V system. The HCT variant has TTL-compatible input thresholds (0.8V low, 2V high), while the HC variant uses CMOS thresholds (roughly 1.5V at 5V). If your driving logic is TTL-level, the HCT version is the correct choice. If the driver is CMOS, either works, but the HCT version draws slightly more input current.
Yes, the CD74HCT32E is designed for a 4.5V to 5.5V supply range, making it fully compatible with 5V TTL and CMOS systems. The 5V rail is its nominal operating voltage.
The CD74HCT32E has TTL-compatible input thresholds (0.8V low, 2V high), while the CD74HC32E uses CMOS thresholds (typically 1.5V at 5V). Both are quad 2-input OR gates in the same pinout and package. The HCT version is the right pick when interfacing to TTL logic outputs; the HC version is preferred for pure CMOS systems where lower input current matters.