- 制造厂商:TI
- 产品类别:逻辑和电压转换
- 技术类目:缓冲器、驱动器和收发器 - 通用收发器
- 功能描述:具有集电极开路输出的八路总线收发器
- 点击这里打开及下载SN74LS642的技术文档资料
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These octal bus transceivers are designed for asynchronous two-way communication between data buses. The 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 enable input (G) can be used to disable the device so the buses are effectively isolated.
The -1 versions of the SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOL is increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.
The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military tempearture range of 55°C to 125°C. The SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are characterized for operation from 0°C to 70°C.
- SN74LS64X-1 Versions Rated at IOL of 48 mA
- Bi-directional Bus Transceivers in High-Density 20-Pin Packages
- Hysteresis at Bus Inputs Improves Noise Margins
- Choice of True or Inverting Logic
- Choice of 3-State or Open-collector Outputs
- IOL (Max) (mA)
- 24
- IOH (Max) (mA)
- 0.1
- Technology Family
- LS
- Rating
- Catalog
- Operating temperature range (C)
- 0 to 70
SN74LS642的完整型号有:SN74LS642-1DW、SN74LS642-1N、SN74LS642DW、SN74LS642N、SN74LS642NSR,以下是这些产品的关键参数及官网采购报价:
SN74LS642-1DW,工作温度:0 to 70,封装:SOIC (DW)-20,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LS642-1DW的批量USD价格:3.207(1000+)
SN74LS642-1N,工作温度:0 to 70,封装:PDIP (N)-20,包装数量MPQ:20个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:NIPDAU,TI官网SN74LS642-1N的批量USD价格:3.688(1000+)
SN74LS642DW,工作温度:0 to 70,封装:SOIC (DW)-20,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LS642DW的批量USD价格:3.207(1000+)
SN74LS642N,工作温度:0 to 70,封装:PDIP (N)-20,包装数量MPQ:20个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:NIPDAU,TI官网SN74LS642N的批量USD价格:3.688(1000+)
SN74LS642NSR,工作温度:0 to 70,封装:SO (NS)-20,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网SN74LS642NSR的批量USD价格:3.207(1000+)
14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM
该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。