SN74F240 八路缓冲器和线路驱动器
SN74F240 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 ´F241 and ´F244, 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 ´F240 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 SN74F240 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area
| SN74F240 | |
| Voltage Nodes(V) | 5 |
| Vcc range(V) | 4.5 to 5.5 |
| Input Level | TTL |
| Output Level | TTL |
| No. of Outputs | 8 |
| Output Drive(mA) | -15/64 |
| tpd max(ns) | 8 |
| Static Current | 52 |
| Logic | Inv |
| Technology Family | F |
| Rating | Catalog |
SN74F240 特性
- 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
- Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs
SN74F240 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 |
| SN74F240DBLE | OBSOLETE | 0 to 70 | SSOP (DB) | 20 | |||
| SN74F240DBR | NRND | 0 to 70 | 1.75 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74F240DBRE4 | NRND | 0 to 70 | 1.75 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74F240DBRG4 | NRND | 0 to 70 | 1.75 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74F240DW | ACTIVE | 0 to 70 | 0.55 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74F240DWE4 | ACTIVE | 0 to 70 | 0.55 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74F240DWG4 | ACTIVE | 0 to 70 | 0.55 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74F240DWR | ACTIVE | 0 to 70 | 0.44 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74F240DWRE4 | ACTIVE | 0 to 70 | 0.44 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74F240DWRG4 | ACTIVE | 0 to 70 | 0.44 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74F240N | ACTIVE | 0 to 70 | 0.47 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74F240NE4 | ACTIVE | 0 to 70 | 0.47 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74F240NSR | ACTIVE | 0 to 70 | 0.48 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74F240NSRE4 | ACTIVE | 0 to 70 | 0.48 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74F240NSRG4 | ACTIVE | 0 to 70 | 0.48 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R |
SN74F240 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 |
| SN74F240DBR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DBR | SN74F240DBR |
| SN74F240DBRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DBRE4 | SN74F240DBRE4 |
| SN74F240DBRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DBRG4 | SN74F240DBRG4 |
| SN74F240DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DW | SN74F240DW |
| SN74F240DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DWE4 | SN74F240DWE4 |
| SN74F240DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DWG4 | SN74F240DWG4 |
| SN74F240DWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DWR | SN74F240DWR |
| SN74F240DWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DWRE4 | SN74F240DWRE4 |
| SN74F240DWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240DWRG4 | SN74F240DWRG4 |
| SN74F240N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74F240N | SN74F240N |
| SN74F240NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74F240NE4 | SN74F240NE4 |
| SN74F240NSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240NSR | SN74F240NSR |
| SN74F240NSRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240NSRE4 | SN74F240NSRE4 |
| SN74F240NSRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74F240NSRG4 | SN74F240NSRG4 |
SN74F240 应用技术支持与电子电路设计开发资源下载
- SN74F240 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)
