The 74VHC238 3 TO 8 LINE DECODER is a high-performance CMOS 3-select-8 decoder produced by National Semiconductor
The 74VHC238 is an advanced high-speed CMOS 3-to-8 line decoder fabricated with sub-micron silicon gate and double-layer metal wiring CMOS technology. It features three enable inputs to ease cascade connections and application of address decoders for memory systems. The device includes power-down protection on all inputs, allowing 0 to 7V to be accepted on inputs regardless of the supply voltage, making it suitable for interfacing 5V to 3V systems.
| Propagation Delay (Typical) | 5.5 ns |
|---|---|
| Power Dissipation (Max) | 4 mW |
| Noise Immunity (Min) | 28% Voc |
| Supply Voltage Range | 2V to 5.5V |
| Operating Temperature Range | -55 to 125 °C |
| ESD Immunity | 2KV |
The operating voltage range is 2V to 5.5V.
Yes, it can be used to interface 5V to 3V because power down protection is provided on all inputs.
The available package types are SOP and TSSOP.