SN74LS42是TI公司的一款解码器/编码器/多路复用器产品，SN74LS42是4 线路 BCD 至 10 线路十进制解码器，本页介绍了SN74LS42的产品说明、应用、特性等，并给出了与SN74LS42相关的TI元器件型号供参考。
SN74LS42 - 4 线路 BCD 至 10 线路十进制解码器 - 解码器/编码器/多路复用器 - 特殊逻辑 - TI公司（Texas Instruments，德州仪器）
These monolithic BCD-to-decimal decoders consist of eight inverters and ten four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid input logic ensures that all outputs remain off for all invalid input conditions.
The '42A and 'LS42 feature inputs and outputs that are compatible for use with most TTL and other saturated low-level logic circuits. DC noise margins are typically one volt.
The SN5442A and SN54LS42 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN7442A and SN74LS42 are characterized for operation from 0°C to 70°C.
- All Outputs Are High for Invalid Input Conditions
- Also for Application as
- 4-Line-to-16-Line Decoders
- 3-Line-to-8-Line Decoders
- Diode-Clamped Inputs
