The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V VCC operation, and the SN74LVC646A octal bus transceiver and register is designed for 1.65-V to 3.6-V VCC operation.
These 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 are performed with the ’LVC646A devices.
Output-enable (OE)\ and direction-control (DIR) inputs control the transceiver functions
| SN74LVC646A | |
| Voltage Nodes(V) | 3.3, 2.7, 2.5, 1.8 |
| Vcc range(V) | 2.0 to 3.6 |
| Input Level | TTL/CMOS |
| Output Level | LVTTL |
| Output Drive(mA) | -24/24 |
| No. of Outputs | 8 |
| Logic | True |
| Static Current | 0.01 |
| Technology Family | LVC |
| 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 |
| SN74LVC646ADW | ACTIVE | -40 to 85 | 1.15 | 1ku | SOIC (DW) | 24 | 25 | TUBE | |
| SN74LVC646ADWE4 | ACTIVE | -40 to 85 | 1.15 | 1ku | SOIC (DW) | 24 | 25 | TUBE | |
| SN74LVC646ADWG4 | 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 |
| SN74LVC646ADW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVC646ADW | SN74LVC646ADW |
| SN74LVC646ADWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVC646ADWE4 | SN74LVC646ADWE4 |
| SN74LVC646ADWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LVC646ADWG4 | SN74LVC646ADWG4 |
