SN74BCT244 描述These octal buffers and line drivers are designed specifically to improve   both the performance and density of 3-state memory address drivers, clock   drivers, and bus-oriented receivers and transmitters. Taken together with the   'BCT240 and 'BCT241, these devices provide the choice of selected combinations   of inverting and noninverting outputs, symmetrical 
 (active-low   output-enable) inputs, and complementary OE and 
 inputs.
The 'BCT244 is organized as two 4-bit buffers/line drivers with separate   output-enable (
) inputs. When 
 is low, the   device passes data from the A inputs to the Y outputs. When 
 is high, the   outputs are in the high-impedance state.
The SN54BCT244 is characterized for operation over the full military temperature range of -55°C to 125°C
| SN54BCT244 | SN74BCT244 | |
| Voltage Nodes(V) | 5 | 5 | 
| Vcc range(V) | 4.5 to 5.5 | 4.5 to 5.5 | 
| Logic | True | True | 
| Input Level | TTL | TTL | 
| Output Level | TTL | TTL | 
| Output Drive(mA) | -15/64 | |
| No. of Outputs | 8 | 8 | 
| tpd max(ns) | 5.5 | |
| Static Current | 60 | |
| Rating | Military | Catalog | 
| Technology Family | BCT | BCT | 
| 器件 | 状态 | 温度 | 价格(美元) | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 | 
| SN74BCT244DW | ACTIVE | 0 to 70 | 3.60 | 1ku | SOIC (DW) | 20 | 25 | TUBE | BCT244 | 
| SN74BCT244DWE4 | ACTIVE | 0 to 70 | 3.60 | 1ku | SOIC (DW) | 20 | 25 | TUBE | BCT244 | 
| SN74BCT244DWG4 | ACTIVE | 0 to 70 | 3.60 | 1ku | SOIC (DW) | 20 | 25 | TUBE | BCT244 | 
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 | 
| SN74BCT244DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74BCT244DW | SN74BCT244DW | 
| SN74BCT244DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74BCT244DWE4 | SN74BCT244DWE4 | 
| SN74BCT244DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74BCT244DWG4 | SN74BCT244DWG4 |