ZHCSR06H March 1984 – December 2022 SN54HCT245 , SN74HCT245
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
- DB|20
- NS|20
- N|20
- DW|20
- PW|20
- DGS|20
散热焊盘机械数据 (封装 | 引脚)
订购信息
9.2.3 Application Curve
It is common to see significant losses in ribbon cables and back planes. The plot shown in Figure 9-2 is a simplified simulation of a ribbon cable from a 5-V, 10-MHz low drive strength source. It shows the difference between an input signal from a weak driver like an MCU or FPGA compared to a strong driver like the SN74HCT245 when measured at the distant end of the cable. By adding a high-current drive transceiver before the cable, the signal strength can be significantly improved, and subsequently the cable can be longer.
Unbuffered line is directly connected to low current source, SN74HCT245 line is buffered through the transceiver. Both signals are measured at the distant end of the ribbon cable.
Figure 9-2 Simulated Outputs From Ribbon Cable With a 5-V, 10-MHz Source