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CD74AC161M

  • 描述:逻辑类型: 二进制计数器 电源电压: 1.5伏~5.5伏 每个元件的位数: four 计数速度率: 90 MHz 供应商设备包装: 16-SOIC 安装类别: 表面安装
  • 品牌: 德州仪器 (Texas)
  • 交期:2-3 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 1

数量 单价 合计
1+ 7.99769 7.99769
10+ 7.11489 71.14896
30+ 6.28465 188.53950
100+ 5.66459 566.45920
  • 库存: 9241
  • 单价: ¥7.99769
  • 数量:
    - +
  • 总计: ¥8.00
在线询价

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规格参数

  • 逻辑类型 二进制计数器
  • 部件状态 可供货
  • 定向 向上的
  • 元件数量 one
  • 工作温度 -55摄氏度~125摄氏度
  • 每个元件的位数 four
  • 重置 异步
  • 定时 同步的
  • 正反器类别 上升沿
  • 安装类别 表面安装
  • 制造厂商 德州仪器 (Texas)
  • 计数速度率 90 MHz
  • 包装/外壳 16-SOIC(0.154“,3.90毫米宽)
  • 供应商设备包装 16-SOIC
  • 电源电压 1.5伏~5.5伏

CD74AC161M 产品详情

The ’AC161 devices are 4-bit binary counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting These devices are fully programmable; that is, they can be preset to any number between 0 and 9 or 15. Presetting is synchronous; therefore, setting up a low level at the load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse, regardless of the levels of the enable inputs.

The clear function is asynchronous. A low level at the clear (CLR)\ input sets all four of the flip-flop outputs low, regardless of the levels of the CLK, load (LOAD)\, or enable inputs.

The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating. Instrumental in accomplishing this function are ENP, ENT, and a ripple-carry output (RCO). Both ENP and ENT must be high to count, and ENT is fed forward to enable RCO. Enabling RCO produces a high-level pulse while the count is maximum (9 or 15 with QA high). This high-level overflow ripple-carry pulse can be used to enable successive cascaded stages. Transitions at ENP or ENT are allowed, regardless of the level of CLK.

The counters feature a fully independent clock circuit. Changes at control inputs (ENP, ENT, or LOAD\) that modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the stable setup and hold times.

Feature

  • Internal Look-Ahead for Fast Counting
  • Carry Output for n-Bit Cascading
  • Synchronous Counting
  • Synchronously Programmable
  • SCR-Latchup-Resistant CMOS Process and Circuit Design
  • Exceeds 2-kV ESD Protection per MIL-STD-883, Method 3015
Description

The ’AC161 devices are 4-bit binary counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting These devices are fully programmable; that is, they can be preset to any number between 0 and 9 or 15. Presetting is synchronous; therefore, setting up a low level at the load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse, regardless of the levels of the enable inputs.

The clear function is asynchronous. A low level at the clear (CLR)\ input sets all four of the flip-flop outputs low, regardless of the levels of the CLK, load (LOAD)\, or enable inputs.

The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating. Instrumental in accomplishing this function are ENP, ENT, and a ripple-carry output (RCO). Both ENP and ENT must be high to count, and ENT is fed forward to enable RCO. Enabling RCO produces a high-level pulse while the count is maximum (9 or 15 with QA high). This high-level overflow ripple-carry pulse can be used to enable successive cascaded stages. Transitions at ENP or ENT are allowed, regardless of the level of CLK.

The counters feature a fully independent clock circuit. Changes at control inputs (ENP, ENT, or LOAD\) that modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the stable setup and hold times.

CD74AC161M所属分类:计数器/触发器芯片,CD74AC161M 由 德州仪器 (Texas) 设计生产,可通过久芯网进行购买。CD74AC161M价格参考¥7.997690,你可以下载 CD74AC161M中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询CD74AC161M规格参数、现货库存、封装信息等信息!

德州仪器 (Texas)

德州仪器 (Texas)

德州仪器公司(TI)是一家开发模拟IC和嵌入式处理器的全球半导体设计和制造公司。通过雇用世界上最聪明的人,TI创造了塑造技术未来的创新。如今,TI正在帮助超过10万名客户改变未来。

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