SN54HCT244-SP中文资料具有 TTL 兼容型 CMOS 输入和三态输出的航天类 8 通道、4.5V 至 5.5V 缓冲器数据手册TI规格书

描述 Description

These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clockdrivers, and bus-oriented receivers and transmitters. The SNx4HCT244 devices are organized as two 4-bit buffers or drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

特性 Features

• Operating Voltage Range of 4.5 V to 5.5 V
• High-Current Outputs Drive up to 15 LSTTL Loads
• Low Power Consumption: 80-µA Maximum ICC
• Typical tpd = 13 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Maximum
• Inputs Are TTL-Voltage Compatible
• 3-State Outputs Drive Bus Lines and Buffer Memory Address Registers