SN54LVC574A_TI 具有三态输出的八路边沿触发式 D 型触发器

SN54LVC574A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：触发器、锁存器和寄存器 - D 型触发器
功能描述：具有三态输出的八路边沿触发式 D 型触发器
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SN54LVC574A的产品详情：

The SN54LVC574A octal edge-triggered D-type flip-flop is designed for 2.7-V to 3.6-V V_CC operation, and the SN74LVC574A octal edge-triggered D-type flip-flop is designed for 1.65-V to 3.6-V V_CC operation.

These devices feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels at the data (D) inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

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 device when it is 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.

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.

SN54LVC574A的优势和特性：

Operate From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Specified From -40°C to 85°C, -40°C to 125°C, and -55°C to 125°C
Max tpd of 7 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
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)

SN54LVC574A的参数（英文）：

Number of channels (#)
8
Technology Family
LVC
Supply voltage (Min) (V)
2
Supply voltage (Max) (V)
3.6
Input type
Standard CMOS
Output type
3-State
Clock Frequency (Max) (MHz)
100
IOL (Max) (mA)
24
IOH (Max) (mA)
-24
ICC (Max) (uA)
10
Features
Balanced outputs, Very high speed (tpd 5-10ns), Over-voltage tolerant inputs, Partial power down (Ioff)

SN54LVC574A具体的完整产品型号参数及价格（美元）：

SN54LVC574A的完整型号有：5962-9757601QRA、5962-9757601QSA、SNJ54LVC574AJ、SNJ54LVC574AW，以下是这些产品的关键参数及官网采购报价：

5962-9757601QRA，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5962-9757601QRA的批量USD价格：18.302（1000+）

5962-9757601QSA，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5962-9757601QSA的批量USD价格：24.87（1000+）

SNJ54LVC574AJ，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SNJ54LVC574AJ的批量USD价格：18.302（1000+）

SNJ54LVC574AW，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SNJ54LVC574AW的批量USD价格：24.87（1000+）

SN54LVC574A的评估套件：

SN54LVC574A的电路图解：

SN54LVC574A的评估套件：