CD74AC139/CD74ACT139 are dual 2-to-4-line decoders/demultiplexers that utilize the Harris Advanced CMOS Logic technology.
This document is a technical datasheet for the CD74AC139 and CD74ACT139 devices, which are dual 2-to-4-line decoders/demultiplexers utilizing Harris Advanced CMOS Logic technology. The chips feature buffered inputs and operate with balanced propagation delays across AC types (1.5V to 5.5V) and ACT types (4.5V to 5.5V). They include a single active LOW enable input for each decoder section.
| Typical Propagation Delay (AC Types, 5V) | 5.4ns at Voc = 5V, Ta = 25°C, CL = 50pF |
|---|---|
| ESD Protection | Exceeds 2kV ESD Protection MIL-STD-883, Method 3015 |
| Output Drive Current | +24mA Output Drive Current |
| Supply Voltage Range (ACT Types) | 4.5V to 5.5V |
| Package Type | LAPDIP, LASOIC |
If the enable input is HIGH, all four outputs remain HIGH.
Each device contains two independent binary to one-of-four decoders.
The maximum junction temperature is not explicitly listed in the text, but storage range is -65°C to 150°C.