SN74LVC2952A_TI 具有三态输出的八路总线收发器和寄存器

SN74LVC2952A的基本参数

制造厂商：TI（德州仪器，Texas Instruments）
产品类别：逻辑和电压转换
技术类目：缓冲器、驱动器和收发器 - 通用收发器
功能描述：具有三态输出的八路总线收发器和寄存器
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SN74LVC2952A的产品详情：

This octal bus transceiver and register is designed for 1.65-V to 3.6-V V_CC operation.

The SN74LVC2952A consists 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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC 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 partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

SN74LVC2952A的优势和特性：

Operates From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 8.2 ns at 3.3 V
Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
Typical VOHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25°C
Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
Ioff Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

SN74LVC2952A的参数（英文）：

IOL (Max) (mA)
24
IOH (Max) (mA)
-24
Technology Family
LVC
Rating
Catalog
Operating temperature range (C)
-40 to 85

SN74LVC2952A具体的完整产品型号参数及价格（美元）：

SN74LVC2952A的完整型号有：SN74LVC2952ADBR、SN74LVC2952APWR，以下是这些产品的关键参数及官网采购报价：

SN74LVC2952ADBR，工作温度：-40 to 85，封装：SSOP (DB)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74LVC2952ADBR的批量USD价格：0.419（1000+）

SN74LVC2952APWR，工作温度：-40 to 85，封装：TSSOP (PW)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74LVC2952APWR的批量USD价格：0.381（1000+）

SN74LVC2952A的评估套件：

14-24-LOGIC-EVM 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。

SN74LVC2952A的电路图解：

SN74LVC2952A的评估套件：