CY74FCT157T - 四路 2 输入多路复用器

CY74FCT157T是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CY74FCT157T是四路 2 输入多路复用器，本站介绍了CY74FCT157T的封装应用图解、特点和优点、功能等，并给出了与CY74FCT157T相关的TI元器件型号供参考。

CY74FCT157T - 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 \x92FCT157T devices are quad two-input multiplexers that select four bits of data from two sources under the control of a common data-select (S) input. The output-enable (E\) input is active low. When E\ is high, all of the outputs (Y) are forced low, regardless of all other input conditions.

Moving data from two groups of registers to four common output buses is a common use of the \x92FCT157T devices. The state of S determines the particular register from which the data comes. It also can be used as a function generator. These devices are useful for implementing highly irregular logic by generating any 4 of the 16 different functions of 2 variables, with 1 variable common.

The \x92FCT157T devices are logic implementations of a four-pole, two-position switch, where the position of the switch is determined by the logic levels at S.

These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

产品特性

Function, Pinout, and Drive Compatible With FCT and F Logic
Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
Ioff Supports Partial-Power-Down Mode Operation
Matched Rise and Fall Times
Fully Compatible With TTL Input and Output Logic Levels
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
CY54FCT157T
- 32-mA Output Sink Current
- 12-mA Output Source Current
CY74FCT157T
- 64-mA Output Sink Current
- 32-mA Output Source Current
3-State Outputs

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