This octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH244 is organized as two 4-bit 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.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended
| SN74ALVCH244 | |
| Voltage Nodes(V) | 3.3, 2.7, 2.5, 1.8 |
| Vcc range(V) | 1.65 to 3.6 |
| Logic | True |
| Input Level | LVTTL |
| Output Level | LVTTL |
| Output Drive(mA) | -24/24 |
| No. of Outputs | 8 |
| tpd max(ns) | 2.8 |
| Static Current | 0.04 |
| Rating | Catalog |
| Technology Family | ALVC |
| 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 |
| SN74ALVCH244DW | ACTIVE | -40 to 85 | 0.40 | 1ku | SOIC (DW) | 20 | 25 | TUBE | ALVCH244 |
| SN74ALVCH244DWE4 | ACTIVE | -40 to 85 | 0.40 | 1ku | SOIC (DW) | 20 | 25 | TUBE | ALVCH244 |
| SN74ALVCH244DWG4 | ACTIVE | -40 to 85 | 0.33 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | ALVCH244 |
| 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 |
| SN74ALVCH244DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALVCH244DW | SN74ALVCH244DW |
| SN74ALVCH244DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALVCH244DWE4 | SN74ALVCH244DWE4 |
| SN74ALVCH244DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALVCH244DWG4 | SN74ALVCH244DWG4 |