3.3 -V ABT八路总线收发器和寄存器具有三态输出 3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
These octal 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 LVTH2952 devices consist of two 8-bit back-to-back registers that store data flowing in both directions between two bidirectional buses. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock CLKAB or CLKBA input, provided that the clock-enable CLKENAB\ or CLKENBA\\\\ input is low. Taking the output-enable OEAB\ or OEBA\\\\ input low accesses the data on either port.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are 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.
电源电压DC 3.60 V, 3.60 V max
电路数 8
通道数 8
位数 8
电压波节 3.30 V, 2.70 V
输出电流驱动 -500 µA
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 24
封装 SOIC-24
长度 15.4 mm
宽度 7.52 mm
高度 2.35 mm
封装 SOIC-24
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
SN74LVTH2952DW TI 德州仪器 | 当前型号 | 当前型号 |
SN74LVTH2952DBR 德州仪器 | 完全替代 | SN74LVTH2952DW和SN74LVTH2952DBR的区别 |
SN74LVTH2952DWR 德州仪器 | 完全替代 | SN74LVTH2952DW和SN74LVTH2952DWR的区别 |
SN74LVTH2952DBRE4 德州仪器 | 完全替代 | SN74LVTH2952DW和SN74LVTH2952DBRE4的区别 |