Key facts
- Brand
- Texas Instruments
- Model
- CD74AC139
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-02
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Harris CD74AC139/CD74ACT139 Dual 2-to-4-Line Decoder Datasheet
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.
Read onlineTexas Instruments CD74AC139 specifications
| 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 |
Source: Harris CD74AC139/CD74ACT139 Dual 2-to-4-Line Decoder Datasheet
All Texas Instruments CD74AC139 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the function of the enable input?
If the enable input is HIGH, all four outputs remain HIGH.
From: Harris CD74AC139/CD74ACT139 Dual 2-to-4-Line Decoder Datasheet
How many independent decoders are in each device?
Each device contains two independent binary to one-of-four decoders.
From: Harris CD74AC139/CD74ACT139 Dual 2-to-4-Line Decoder Datasheet
What type of device is the CD74AC139?
It is a dual 2‑to‑4‑line decoder/demultiplexer.
What is the typical propagation delay of the CD74AC139?
The typical propagation delay is 5.4 ns at Vcc = 5 V, Ta = 25 °C, and 50 pF load.