SN74AHCT244 具有三态输出的八路缓冲器/驱动器
SN74AHCT244 描述
These octal buffers/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.
The ’AHCT244 devices are organized as two 4-bit buffers/line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the device passes data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver
| SN54AHCT244 | SN74AHCT244 | |
| 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 | CMOS | CMOS |
| Output Drive(mA) | -8/8 | -8/8 |
| No. of Outputs | 8 | 8 |
| tpd max(ns) | 9.5 | 9.5 |
| Static Current | 0.04 | 0.04 |
| Rating | Military | Catalog |
| Technology Family | AHCT | AHCT |
SN74AHCT244 特性
- Inputs Are TTL-Voltage Compatible
- Latch-Up Performance Exceeds 250 mA Per JESD 17
SN74AHCT244 芯片订购指南
| 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 |
| SN74AHCT244DW | ACTIVE | -40 to 85 | 0.28 | 1ku | SOIC (DW) | 20 | 25 | TUBE | AHCT244 |
| SN74AHCT244DWE4 | ACTIVE | -40 to 85 | 0.28 | 1ku | SOIC (DW) | 20 | 25 | TUBE | AHCT244 |
| SN74AHCT244DWG4 | ACTIVE | -40 to 85 | 0.28 | 1ku | SOIC (DW) | 20 | 25 | TUBE | AHCT244 |
SN74AHCT244 质量与无铅数据
| 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 |
| SN74AHCT244DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT244DW | SN74AHCT244DW |
| SN74AHCT244DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT244DWE4 | SN74AHCT244DWE4 |
| SN74AHCT244DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT244DWG4 | SN74AHCT244DWG4 |
SN74AHCT244 应用技术支持与电子电路设计开发资源下载
- SN74AHCT244 数据资料 dataSheet 下载.PDF
- TI 德州仪器缓冲器、驱动器/收发器产品选型与价格 . xls
- CMOS 非缓冲反向器在振荡器电路中的使用 (PDF 951 KB)
- Semiconductor Packing Methodology (PDF 3005 KB)
- 逻辑产品选择指南 2006/2007 （修订版 Z）(4462KB)
- 标准线性和逻辑产品 5 分钟指南 (786KB)
- 了解和解释标准逻辑数据表
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)