Key facts
- Brand
- Texas Instruments
- Model
- 74ACT138
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-02
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TEXAS INSTRUMENTS CD74AC138 CD74ACT138 CD74AC238 CD74ACT238 Manual
The document describes the CD74AC138, CD74ACT138, CD74AC238, and CD74ACT238 as 3-to-8-line decoders/demultiplexers utilizing Harris Advanced CMOS Logic technology. These devices feature buffered inputs, SCR-latchup-resistant design, and balanced propagation delays suitable for AC types (1.5V to 5.5V) and ACT types (4.5V to 5.5V).
Read onlineTexas Instruments 74ACT138 specifications
| Supply Voltage Range (ACT Types) | 4.5V to 5.5V |
|---|---|
| Operating Temperature Range | -55°C to 125°C |
| Typical Propagation Delay (AC Types) | 5ns at V CC = 5V |
| ESD Protection Rating | 2kV |
Source: TEXAS INSTRUMENTS CD74AC138 CD74ACT138 CD74AC238 CD74ACT238 Manual
All Texas Instruments 74ACT138 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the typical propagation delay for AC types at 5V?
The typical propagation delay is 5ns when V CC = 5V and TA = 25°C.
From: TEXAS INSTRUMENTS CD74AC138 CD74ACT138 CD74AC238 CD74ACT238 Manual
Do these devices support transmission line driving?
Yes, they can drive 50 Ω Transmission Lines.
From: TEXAS INSTRUMENTS CD74AC138 CD74ACT138 CD74AC238 CD74ACT238 Manual
How many enable inputs do these decoders have?
They have three enable inputs (two active‑low and one active‑high).
From: Texas Instruments CD54ACT138 / CD74ACT138 3-Line to 8-Line Decoder/Demultiplexer Datasheet
What is the maximum output current each pin can source?
Each output can source up to +24 mA.
From: Texas Instruments CD54ACT138 / CD74ACT138 3-Line to 8-Line Decoder/Demultiplexer Datasheet
What is the typical propagation delay of these decoders?
The typical propagation delay is 5 ns at a supply voltage of 5 V.
From: Texas Instruments CD54/74AC138, CD54/74ACT138, CD74AC238, CD74ACT238 Datasheet
What ESD protection rating do the devices meet?
They exceed 2 kV ESD protection according to MIL‑STD‑883 Method 3015.
From: Texas Instruments CD54/74AC138, CD54/74ACT138, CD74AC238, CD74ACT238 Datasheet