This octal buffer/driver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC operation.
The SN74AUCH244 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
| SN74AUCH244 | |
| Vcc range(V) | 0.8 to 2.7 |
| Logic | True |
| Output Drive(mA) | -/+9 |
| No. of Gates | 8 |
| tpd max(ns) | 1.5 |
| Static Current | 20 uA |
| Rating | Catalog |
| Technology Family | AUC |
| 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 |
| SN74AUCH244RGYR | ACTIVE | -40 to 85 | 1.60 | 1ku | VQFN (RGY) | 20 | 3000 | LARGE T&R | MS244 |
| SN74AUCH244RGYRG4 | ACTIVE | -40 to 85 | 1.60 | 1ku | VQFN (RGY) | 20 | 3000 | LARGE T&R | MS244 |
| 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 |
| SN74AUCH244RGYR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | SN74AUCH244RGYR | SN74AUCH244RGYR |
| SN74AUCH244RGYRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | SN74AUCH244RGYRG4 | SN74AUCH244RGYRG4 |
