CY74FCT257TQCT 供应商
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CY74FCT257TQCT
品牌：TI 封装/批号：原厂原装/22+
CY74FCT257TQCT 属性参数
- 标准包装：1
- 类别：集成电路 (IC)
- 家庭：逻辑 - 信号开关，多路复用器，解码器
- 系列：74FCT
- 类型：多路复用器
- 电路：4 x 2:1
- 独立电路：1
- 输出电流高，低：32mA，64mA
- 电压电源：单电源
- 电源电压：4.75 V ~ 5.25 V
- 工作温度：-40°C ~ 85°C
- 安装类型：*
- 封装/外壳：*
- 供应商设备封装：*
- 包装：*
- 其它名称：296-31637-6
产品特性
- Function, Pinout, and Drive Compatible With FCT and F Logic
- Reduced VOH (Typically = 3.3 V) Version 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)
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
- 64-mA Output Sink Current 32-mA Output Source Current
- 3-State Outputs
产品概述
The CY74FCT257T has four identical two-input multiplexers that select four bits of data from two sources under
the control of a common data-select (S) input. The I0 inputs are selected when S is low, and the I1 inputs are
selected when S is high. Data at the output is noninverted.
The CY74FCT257T is a logic implementation of a four-pole, two-position switch, where the position of the switch
is determined by the logic levels at S. Outputs are in the high-impedance state when the output-enable (OE\)
input is high.
All but one device must be in the high-impedance state to avoid currents exceeding the maximum ratings if
outputs are tied together. OE\ inputs must ensure that there is no overlap when outputs of 3-state devices are
tied together.
This device is 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.
CY74FCT257TQCT