3.3 -V ABT八路缓冲器/驱动器,具有三态输出 3.3-V ABT OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
description/ordering information
This octal buffer and line driver is designed specifically for low-voltage 3.3-V VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment.
The SN74LVT244B 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 OEis high, the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OEshould be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for hot-insertion applications using Ioff
and power-up 3-state. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
Supports Mixed-Mode Signal Operation5-V Input and Output Voltages With 3.3-V VCC
Supports Unregulated Battery Operation Down to 2.7 V
Typical VOLPOutput Ground Bounce <0.8 V at VCC= 3.3 V, TA= 25°C
Ioff and Power-Up 3-State Support Hot Insertion
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model A114-A
− 200-V Machine Model A115-A
− 1000-V Charged-Device Model C101
电源电压DC 3.30 V, 3.60 V max
输出接口数 8
通道数 8
位数 8
电压波节 3.30 V, 2.70 V
静态电流 5 mA
输出电流驱动 -500 µA
输入数 8
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 2.7V ~ 3.6V
电源电压Max 3.6 V
电源电压Min 2.7 V
安装方式 Surface Mount
引脚数 20
封装 VQFN-20
长度 4.5 mm
宽度 3.5 mm
高度 0.8 mm
封装 VQFN-20
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
SN74LVT244BRGYR TI 德州仪器 | 当前型号 | 当前型号 |
SN74LVT244BRGYRG4 德州仪器 | 完全替代 | SN74LVT244BRGYR和SN74LVT244BRGYRG4的区别 |
SN74LVTH244ARGYR 德州仪器 | 类似代替 | SN74LVT244BRGYR和SN74LVTH244ARGYR的区别 |
SN74LVTH244ARGYRG4 德州仪器 | 类似代替 | SN74LVT244BRGYR和SN74LVTH244ARGYRG4的区别 |