SN74ACT1284NSR 供应商
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SN74ACT1284NSR
品牌：TI 封装/批号：原厂原装/22+ -
SN74ACT1284NSR
品牌： 封装/批号：/2019+
SN74ACT1284NSR 属性参数
- 标准包装：2,000
- 类别：集成电路 (IC)
- 家庭：逻辑 - 专用逻辑
- 系列：74ACT
- 逻辑类型：总线接口
- 电源电压：4.5 V ~ 5.5 V
- 位数：7
- 工作温度：0°C ~ 70°C
- 安装类型：表面贴装
- 封装/外壳：20-SOIC（0.209"，5.30mm 宽）
- 供应商设备封装：20-SO
- 包装：带卷 (TR)
产品特性
- 4.5-V to 5.5-V VCC Operation
- Inputs Accept Voltages to 5.5 V
- Max tpd of 20 ns at 5 V
- 3-State Outputs Directly Drive Bus Lines
- Flow-Through Architecture Optimizes PCB Layout
- Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
- ESD Protection Exceeds JESD 22 2000-V Human-Body Model (A114-A) 200-V Machine Model (A115-A)
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- Designed for the IEEE 1284-I (Level-1 Type) and IEEE 1284-II (Level-2 Type) Electrical Specifications
产品概述
The ’ACT1284 devices are designed for asynchronous two-way communication between data buses. The control function minimizes external timing requirements.The devices allow data transmission in either the A-to-B or the B-to-A direction for bits 1, 2, 3, and 4, depending on the logic level at the direction-control (DIR) input. Bits 5, 6, and 7, however, always transmit in the A-to-B direction.The output drive for each mode is determined by the high-drive (HD) control pin. When HD is high, the high drive is delivered by the totem-pole configuration, and when HD is low, the outputs are open drain. This meets the drive requirements as specified in the IEEE 1284-I (level-1 type) and the IEEE 1284-II (level-2 type) parallel peripheral-interface specification.