Key facts
- Brand
- Fairchild
- Model
- 74LCX138
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-03
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Fairchild Semiconductor 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet
The document describes the 74LCX138, a high-speed 1-of-8 decoder/demultiplexer fabricated with advanced CMOS technology. It is designed for high-speed memory chip select address decoding and features patented noise/EMI reduction circuitry.
The device accepts three binary weighted inputs to provide eight mutually exclusive active-LOW outputs when enabled. It supports supply voltages from 2.3V to 3.6V and includes 5V tolerant inputs. The datasheet provides absolute maximum ratings, recommended operating conditions, DC and AC electrical characteristics, timing waveforms, and physical dimensions for various packages including SOIC, SOP, TSSOP, and DQFN.
Fairchild 74LCX138 specifications
| Supply Voltage (Operating) | 2.3V to 3.6V |
|---|---|
| Propagation Delay (Max) | 6.0ns |
| Output Drive Current (Max) | +24 mA |
| ESD Performance (Human Body Model) | > 2000V |
| Latch-up Performance | Exceeds 500 mA |
Source: Fairchild Semiconductor 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet
All Fairchild 74LCX138 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the function of the 74LCX138?
It is a high-speed 1-of-8 decoder/demultiplexer ideally suited for memory chip select address decoding.
From: Fairchild Semiconductor 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet
Can the inputs tolerate 5V?
Yes, the device features 5V tolerant inputs.
From: Fairchild Semiconductor 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet
What is the maximum output drive current of the 74LCX138?
The device can source or sink up to ±24 mA per output when VCC is 3.0 V.
From: Fairchild 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet
What input voltage range does the 74LCX138 support?
The inputs are tolerant to 5 V and operate correctly from 2.3 V to 3.6 V.
From: Fairchild 74LCX138 Low Voltage 1-of-8 Decoder/Demultiplexer Datasheet