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D 型锁存器

SN54ALS873B

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具有三态输出的双路 4 位 D 类锁存器

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数据表

SN54ALS873B

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数据表 立即订购

产品详情

Number of channels 8 Technology family ALS Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 75 IOL (max) (mA) 12 IOH (max) (mA) -1 Supply current (max) (µA) 31000 Features Flow-through pinout, High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 8 Technology family ALS Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 75 IOL (max) (mA) 12 IOH (max) (mA) -1 Supply current (max) (µA) 31000 Features Flow-through pinout, High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
LCCC (FK) 28 130.6449 mm² (— mm × — mm) CDIP (JT) 24 221.44 mm² (— mm × — mm)
  • 3-State Buffer-Type Outputs Drive Bus Lines Directly
  • Bus-Structured Pinout
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Plastic (NT) and Ceramic (JT) DIPs

 
  • 3-State Buffer-Type Outputs Drive Bus Lines Directly
  • Bus-Structured Pinout
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Plastic (NT) and Ceramic (JT) DIPs

 

These dual 4-bit D-type latches feature 3-state outputs designed specifically for bus driving. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The dual 4-bit latches are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs in true form, according to the function table. When LE is low, the outputs are latched. When the clear () input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable () input is at a high logic level.

The SN54ALS873B and SN54AS873A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS873B and SN74AS873A are characterized for operation from 0°C to 70°C.

 

 

These dual 4-bit D-type latches feature 3-state outputs designed specifically for bus driving. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The dual 4-bit latches are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs in true form, according to the function table. When LE is low, the outputs are latched. When the clear () input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable () input is at a high logic level.

The SN54ALS873B and SN54AS873A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS873B and SN74AS873A are characterized for operation from 0°C to 70°C.

 

 
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 Dual 4-Bit D-Type Latches With 3-State Outputs 数据表 (Rev. D) 1995-8-1
* SMD SN54ALS873B SMD 84032013A 2016-6-21

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