CD74HCT158 - 高速 CMOS 逻辑四路 2 输入多路复用器

CD74HCT158是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CD74HCT158是高速 CMOS 逻辑四路 2 输入多路复用器，本站介绍了CD74HCT158的封装应用图解、特点和优点、功能等，并给出了与CD74HCT158相关的TI元器件型号供参考。

CD74HCT158 - 高速 CMOS 逻辑四路 2 输入多路复用器 - 解码器/编码器/多路复用器 - 特殊逻辑 - 德州仪器

产品描述

The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select input (S). The Enable input (E\) is active Low. When (E\) is High, all of the outputs in the 158, the inverting type, (1Y\-4Y\) are forced High and in the 157, the non-inverting type, all of the outputs (1Y\-4Y\) are forced Low, regardless of all other input conditions.

Moving data from two groups of registers to four common output busses is a common use of these devices. The state of the Select input determines the particular register from which the data comes. They can also be used as function generators.

产品特性

Common Select Inputs
Separate Enable Inputs
Buffered inputs and Outputs
Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . -55°C to 125°C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il 1µA at VOL, VOH

The CD54HC158 and CD74HC158 are obsolete and no longer are supplied.

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