These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level.

Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C.

• Three-State Outputs Interface Directly with System Bus
• 'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258
• Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158
• Provides Bus Interface from Multiple Sources in High-Performance Systems

Off state (worst case)

• LM4040D41 - 4.096V 精密微功耗并联电压参考，1% 精确度
• SN54LS51 - 与或反向门
• ADC081500 - 高性能、低功耗 8 位、1.5 GSPS A/D 转换器
• SN65HVD1794 - 具有电缆反向和故障保护功能的 70V RS-485 收发器
• LM4050-N - 精密微功耗并联电压基准
• UC29432 - 精密模拟控制器
• LMZ21701 - 具有 17V 最大输入电压的 LMZ21701 1A SIMPLE SWITCHER? 纳米模块
• SN74LS175 - 具有清零功能的四路 D 类触发器
• LM5642X - 具有振荡器同步的高电压、双路同步降压转换器
• CD54ACT86 - 四路 2 输入异或门