SN74LVTH244A-EP_TI 具有总线保持、TTL 兼容型 CMOS 输入和三态电路的增强型产品 8 通道、2.7V 至 3.6V 缓冲器

制造厂商：TI
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 - 同相缓冲器和驱动器
功能描述：具有总线保持、TTL 兼容型 CMOS 输入和三态电路的增强型产品 8 通道、2.7V 至 3.6V 缓冲器
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SN74LVTH244A-EP的产品详情：

This octal buffer and line driver is designed specifically for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The SN74LVTH244A 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 V_CC 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.

This device is fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry 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.

SN74LVTH244A-EP的优势和特性：

Controlled Baseline
- One Assembly/Test Site, One Fabrication Site
Extended Temperature Performance of –40°C to 125°C
Enhanced Diminishing Manufacturing Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree
Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
Supports Unregulated Battery Operation Down to 2.7 V
Ioff and Power-Up 3-State Support Hot Insertion
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 500 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)

Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

SN74LVTH244A-EP的参数（英文）：

Technology Family
LVT
Supply voltage (Min) (V)
2.7
Supply voltage (Max) (V)
3.6
Number of channels (#)
8
IOL (Max) (mA)
32
ICC (Max) (uA)
5000
IOH (Max) (mA)
-24
Input type
TTL-Compatible CMOS
Output type
3-State
Features
Ultra high speed (tpd <5ns), Partial power down (Ioff), Over-voltage tolerant inputs, Power up 3-state, Bus-hold
Rating
HiRel Enhanced Product

SN74LVTH244A-EP具体的完整产品型号参数及价格（美元）：

SN74LVTH244A-EP的完整型号有：SN74LVTH244AQDBREP、SN74LVTH244AQPWREP、V62/03667-01XE、V62/03667-01YE，以下是这些产品的关键参数及官网采购报价：

SN74LVTH244AQDBREP，工作温度：-40 to 125，封装：SSOP (DB)-20，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SN74LVTH244AQDBREP的批量USD价格：1.036（1000+）

SN74LVTH244AQPWREP，工作温度：-40 to 125，封装：TSSOP (PW)-20，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SN74LVTH244AQPWREP的批量USD价格：1.036（1000+）

V62/03667-01XE，工作温度：-40 to 125，封装：SSOP (DB)-20，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V62/03667-01XE的批量USD价格：1.036（1000+）

V62/03667-01YE，工作温度：-40 to 125，封装：TSSOP (PW)-20，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V62/03667-01YE的批量USD价格：1.036（1000+）

SN74LVTH244A-EP的评估套件：

SN74LVTH244A-EP的电路图解：

SN74LVTH244A-EP的评估套件：