These bus transceivers and registers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
The ’LVTH646 devices consist of bus transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the ’LVTH646.
Output-enable (OE\) and direction-control (DIR) inputs are provided to control the transceiver functions
| SN74LVTH646 | |
| Voltage Nodes(V) | 3.3, 2.7 |
| Technology Family | LVT |
| Rating | Catalog |
| 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 |
| SN74LVTH646DW | ACTIVE | -40 to 85 | 1.15 | 1ku | SOIC (DW) | 24 | 25 | TUBE | |
| SN74LVTH646DWE4 | ACTIVE | -40 to 85 | 1.15 | 1ku | SOIC (DW) | 24 | 25 | TUBE | |
| SN74LVTH646DWG4 | ACTIVE | -40 to 85 | 1.15 | 1ku | SOIC (DW) | 24 | 25 | TUBE |
| 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 |
| SN74LVTH646DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVTH646DW | SN74LVTH646DW |
| SN74LVTH646DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVTH646DWE4 | SN74LVTH646DWE4 |
| SN74LVTH646DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVTH646DWG4 | SN74LVTH646DWG4 |
