SN54LVCH244A_TI 具有总线保持和三态输出的军用 8 通道、2V 至 3.6V 缓冲器

SN54LVCH244A的基本参数

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：具有总线保持和三态输出的军用 8 通道、2V 至 3.6V 缓冲器
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SN54LVCH244A的产品详情：

The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V V_CC operation, and the SN74LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V V_CC operation.

These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, these devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

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.

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.

These devices are fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.

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.

SN54LVCH244A的优势和特性：

Operate From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max tpd of 5.9 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
Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
Ioff Supports Partial-Power-Down Mode Operation
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

SN54LVCH244A的参数（英文）：

Technology Family
LVC
Supply voltage (Min) (V)
2
Supply voltage (Max) (V)
3.6
Number of channels (#)
8
IOL (Max) (mA)
24
ICC (Max) (uA)
10
IOH (Max) (mA)
-24
Input type
Standard CMOS
Output type
3-State
Features
Balanced outputs, Very high speed (tpd 5-10ns), Over-voltage tolerant inputs, Bus-hold
Rating
Military

SN54LVCH244A具体的完整产品型号参数及价格（美元）：

SN54LVCH244A的完整型号有：5962-9754201Q2A、5962-9754201QRA、5962-9754201QSA、SNJ54LVCH244AFK、SNJ54LVCH244AJ、SNJ54LVCH244AW，以下是这些产品的关键参数及官网采购报价：

5962-9754201Q2A，工作温度：-55 to 125，封装：LCCC (FK)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9754201Q2A的批量USD价格：19.69（1000+）

5962-9754201QRA，工作温度：-55 to 125，封装：CDIP (J)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9754201QRA的批量USD价格：16.532（1000+）

5962-9754201QSA，工作温度：-55 to 125，封装：CFP (W)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9754201QSA的批量USD价格：23.002（1000+）

SNJ54LVCH244AFK，工作温度：-55 to 125，封装：LCCC (FK)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54LVCH244AFK的批量USD价格：19.69（1000+）

SNJ54LVCH244AJ，工作温度：-55 to 125，封装：CDIP (J)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54LVCH244AJ的批量USD价格：16.532（1000+）

SNJ54LVCH244AW，工作温度：-55 to 125，封装：CFP (W)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54LVCH244AW的批量USD价格：23.002（1000+）

SN54LVCH244A的评估套件：

SN54LVCH244A的电路图解：

SN54LVCH244A的评估套件：