产品详情

Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Number of channels 8 IOL (max) (mA) 48 IOH (max) (mA) -15 Input type TTL Output type TTL Features High speed (tpd 10-50ns), Over-voltage tolerant inputs Technology family ALS Rating Catalog Operating temperature range (°C) 0 to 70
Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Number of channels 8 IOL (max) (mA) 48 IOH (max) (mA) -15 Input type TTL Output type TTL Features High speed (tpd 10-50ns), Over-voltage tolerant inputs Technology family ALS Rating Catalog Operating temperature range (°C) 0 to 70
PDIP (N) 20 228.702 mm² 24.33 x 9.4 SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SOP (NS) 20 98.28 mm² 12.6 x 7.8
  • Bidirectional Bus Transceivers in High-Density 20-Pin Packages
  • Inverting Logic
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

 

  • Bidirectional Bus Transceivers in High-Density 20-Pin Packages
  • Inverting Logic
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

 

These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated.

The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOL for the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B.

The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C.

 

 

These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated.

The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOL for the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B.

The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C.

 

 

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类型 标题 下载最新的英语版本 日期
* 数据表 Octal Bus Transceivers With 3-State Outputs 数据表 (Rev. A) 1995年 1月 1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 Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 1997年 8月 1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 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

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用户指南: PDF | HTML
英语版 (Rev.B): PDF | HTML
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PDIP (N) 20 查看选项
SOIC (DW) 20 查看选项
SOP (NS) 20 查看选项

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  • RoHS
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  • 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
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  • 制造厂地点
  • 封装厂地点

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