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D 型触发器

SN54AS825A

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具有三态输出的 8 位总线接口触发器

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数据表

SN54AS825A

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数据表 立即订购

产品详情

Number of channels 8 Technology family AS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 125 IOL (max) (mA) 48 IOH (max) (mA) -24 Supply current (max) (µA) 90000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 8 Technology family AS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 125 IOL (max) (mA) 48 IOH (max) (mA) -24 Supply current (max) (µA) 90000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
LCCC (FK) 28 130.6449 mm² 11.43 x 11.43
  • Functionally Equivalent to AMD's AM29825
  • Improved IOH Specifications
  • Multiple Output Enables Allow Multiuser Control of the Interface
  • Outputs Have Undershoot-Protection Circuitry
  • Power-Up High-Impedance State
  • Buffered Control Inputs Reduce dcLoading Effects
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

 
  • Functionally Equivalent to AMD's AM29825
  • Improved IOH Specifications
  • Multiple Output Enables Allow Multiuser Control of the Interface
  • Outputs Have Undershoot-Protection Circuitry
  • Power-Up High-Impedance State
  • Buffered Control Inputs Reduce dcLoading Effects
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

 

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing multiuser registers, I/O ports, bidirectional bus drivers, and working registers.

With the clock-enable () input low, the eight D-type edge-triggered flip-flops enter data on the low-to-high transitions of the clock (CLK) input. Taking high disables the clock buffer, latching the outputs. These devices have noninverting data (D) inputs. Taking the clear () input low causes the eight Q outputs to go low independently of the clock.

Multiuser buffered output-enable (,, and ) inputs can be used to place the eight outputs in either a normal logic state (high or low logic level) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

The output enables do not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54AS825A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AS825A is characterized for operation from 0°C to 70°C.

 

 

= H if any of OE1\, OE2\, or OE3\ are high.
= L if all of OE1\, OE2\, or OE3\ are low.

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing multiuser registers, I/O ports, bidirectional bus drivers, and working registers.

With the clock-enable () input low, the eight D-type edge-triggered flip-flops enter data on the low-to-high transitions of the clock (CLK) input. Taking high disables the clock buffer, latching the outputs. These devices have noninverting data (D) inputs. Taking the clear () input low causes the eight Q outputs to go low independently of the clock.

Multiuser buffered output-enable (,, and ) inputs can be used to place the eight outputs in either a normal logic state (high or low logic level) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

The output enables do not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54AS825A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AS825A is characterized for operation from 0°C to 70°C.

 

 

= H if any of OE1\, OE2\, or OE3\ are high.
= L if all of OE1\, OE2\, or OE3\ are low.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 8-Bit Bus-Interface Flip-Flops With 3-State Outputs 数据表 (Rev. B) 1995年 8月 1日
* SMD SN54AS825A SMD 5962-90780 2016年 6月 21日
应用手册 Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 2022年 12月 15日
选择指南 Logic Guide (Rev. AB) 2017年 6月 12日
应用手册 Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
选择指南 逻辑器件指南 2014 (Rev. AA) 最新英语版本 (Rev.AB) 2014年 11月 17日
用户指南 LOGIC Pocket Data Book (Rev. B) 2007年 1月 16日
应用手册 Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
应用手册 TI IBIS File Creation, Validation, and Distribution Processes 2002年 8月 29日
应用手册 使用逻辑器件进行设计 (Rev. C) 1997年 6月 1日
应用手册 Advanced Schottky Load Management 1997年 2月 1日
应用手册 Input and Output Characteristics of Digital Integrated Circuits 1996年 10月 1日
应用手册 Live Insertion 1996年 10月 1日
应用手册 Advanced Schottky (ALS and AS) Logic Families 1995年 8月 1日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
LCCC (FK) 28 Ultra Librarian
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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

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