Key facts
- Brand
- Texas Instruments
- Model
- CD74AC238
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-02
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Texas Instruments CD74AC238 3-Line to 8-Line Decoder/Demultiplexer Datasheet
The CD74AC238 is a 3-line to 8-line decoder/demultiplexer designed for high-performance memory-decoding and data-routing applications. It features very short propagation-delay times, making it suitable for use with high-speed memories where the decoder delay is negligible compared to memory access time.
The device operates over a wide supply voltage range of 1.5V to 5.5V and incorporates three enable inputs (two active-low and one active-high) to simplify cascading and data reception. It offers balanced noise immunity at 30% of the supply voltage and includes SCR-latchup-resistant CMOS circuit design with 2-kV ESD protection.
Texas Instruments CD74AC238 specifications
| Supply Voltage Range | 1.5V to 5.5V |
|---|---|
| Output Drive Current | +24-mA |
| ESD Protection | 2-kV |
| Operating Temperature Range | -55°C to +125°C |
Source: Texas Instruments CD74AC238 3-Line to 8-Line Decoder/Demultiplexer Datasheet
All Texas Instruments CD74AC238 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the supply voltage range for the CD74AC238?
The device supports a supply voltage range from 1.5V to 5.5V.
From: Texas Instruments CD74AC238 3-Line to 8-Line Decoder/Demultiplexer Datasheet
How many enable inputs does the CD74AC238 have?
It incorporates three enable inputs: two active-low and one active-high.
From: Texas Instruments CD74AC238 3-Line to 8-Line Decoder/Demultiplexer Datasheet
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
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