SN74LS298是TI公司的一款解码器/编码器/多路复用器产品，SN74LS298是具有存储器的四路 2 输入 多路复用器，本页介绍了SN74LS298的产品说明、应用、特性等，并给出了与SN74LS298相关的TI元器件型号供参考。
SN74LS298 - 具有存储器的四路 2 输入 多路复用器 - 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 quadruple two-input multiplexers with storage provide essentially the equivalent functional capabilities of two separate MSI functions (SN54157/SN74157 or SN54LS157/SN74LS157 and SN54175/SN74175 or SN54LS175/SN74LS175) in a single 16-pin package.
When the word-select input is low, word 1 (A1, B1, C1, D1) is applies to the flip-flops. A high input to word select will cause the selection of word 2 (A2, B2, C2, D2). The selected word is clocked to the output terminals on the negative-going edge of the clock pulse.
Typical power dissipation is 195 milliwatts for the '298 and 65 milliwatts for the 'LS298. SN54298 and SN54LS298 are characterized for operation over the full military temperature range of -55°C to 125°C; SN74298 and SN74LS298 are characterized for operation from 0°C to 70°C.
- Selects One of Two 4-Bit Data Sources and Stores Data Synchronously with System Clock
- Applications:
- Dual Source for Operands and Constants in Arithmetic Processor; Can Release Processor Register Files for Acquiring New Data
- Implement Separate Registers Capable of Parallel Exchange of Contents Yet Retain External Load Capability
- Universal Type Register for Implementing Various Shift Patterns; Even Has Compound Left-Right Capabilities
