主页 逻辑和电压转换 专用逻辑 IC
主页
逻辑和电压转换
专用逻辑 IC

CD74HCT670

正在供货

高速 CMOS 逻辑 4 x 4 寄存器文件

立即订购
数据表

CD74HCT670

正在供货
数据表 立即订购

产品详情

Technology family HCT Bits (#) 4 Rating Catalog Operating temperature range (°C) -55 to 125
Technology family HCT Bits (#) 4 Rating Catalog Operating temperature range (°C) -55 to 125
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6
  • Simultaneous and Independent Read and Write Operations
  • Expandable to 512 Words of n-Bits
  • Three-State Outputs
  • Organized as 4 Words x 4 Bits Wide
  • Buffered Inputs
  • Typical Read Time = 16ns for ’HC670 VCC = 5V, CL = 15pF, TA = 25°C
  • 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
  • Simultaneous and Independent Read and Write Operations
  • Expandable to 512 Words of n-Bits
  • Three-State Outputs
  • Organized as 4 Words x 4 Bits Wide
  • Buffered Inputs
  • Typical Read Time = 16ns for ’HC670 VCC = 5V, CL = 15pF, TA = 25°C
  • 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 ’HC670 and CD74HCT670 are 16-bit register files organized as 4 words x 4 bits each. Read and write address and enable inputs allow simultaneous writing into one location while reading another. Four data inputs are provided to store the 4-bit word. The write address inputs (WA0 and WA1) determine the location of the stored word in the register. When write enable (WE\) is low the word is entered into the address location and it remains transparent to the data. The outputs will reflect the true form of the input data. When (WE\) is high data and address inputs are inhibited. Data acquisition from the four registers is made possible by the read address inputs (RA1 and RA0). The addressed word appears at the output when the read enable (RE\) is low. The output is in the high impedance state when the (RE\) is high. Outputs can be tied together to increase the word capacity to 512 x 4 bits.

The ’HC670 and CD74HCT670 are 16-bit register files organized as 4 words x 4 bits each. Read and write address and enable inputs allow simultaneous writing into one location while reading another. Four data inputs are provided to store the 4-bit word. The write address inputs (WA0 and WA1) determine the location of the stored word in the register. When write enable (WE\) is low the word is entered into the address location and it remains transparent to the data. The outputs will reflect the true form of the input data. When (WE\) is high data and address inputs are inhibited. Data acquisition from the four registers is made possible by the read address inputs (RA1 and RA0). The addressed word appears at the output when the read enable (RE\) is low. The output is in the high impedance state when the (RE\) is high. Outputs can be tied together to increase the word capacity to 512 x 4 bits.
filter 查找其他 专用逻辑 IC
下载

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相似
新 SN74AHCT164 正在供货 4.5V 至 5.5V 8 位并行输出串行移位寄存器 Voltage range (4.5V to 5.5V), average drive strength (8mA), average propagation delay (9ns)
SN74AHCT595 正在供货 具有三态输出寄存器和 TTL 兼容型 CMOS 输入的八位移位寄存器 Larger voltage range (2V to 5.5V), shorter average propagation delay (9ns)

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 1
类型 标题 下载最新的英语版本 日期
* 数据表 CD54HC670, CD74HC670, CD74HCT670 数据表 (Rev. C) 2003年 10月 16日

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

视频