The TLC556 series are monolithic timing circuits fabricated using the TI LinCMOS^TM process, which provides full compatibility with CMOS, TTL, and MOS logic and operates at frequencies up to 2MHz. Accurate time delays and oscillations are possible with smaller, less-expensive timing capacitors than the NE556 because of the high input impedance. Power consumption is low across the full range of power supply voltages.

Like the NE556, the TLC556 has a trigger level approximately one-third of the supply voltage and

a threshold level approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset input can override all other inputs and can be used to initiate a new timing cycle. If the reset input is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path is provided between the discharge terminal and ground.

While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC556 exhibits greatly reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling capacitors required by the NE556.

These devices have internal electrostatic-discharge (ESD) protection circuits that prevent catastrophic failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015. However, care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance.

All unused inputs should be tied to an appropriate logic level to prevent false triggering.

The TLC556C is characterized for operation from 0°C to 70°C. The TLC556I is characterized for operation from -40°C to 85°C. The TLC556M is characterized for operation over the full military temperature range of -55°C to 125°C

• Very Low Power Consumption...2 mW Typ at VDD = 5 V
• Capable of Operation in Astable Mode
• CMOS Output Capable of Swinging Rail to Rail
• High Output-Current Capability Sink 100 mA Typ Source 10 mA Typ
• Output Fully Compatible With CMOS, TTL, and MOS
• Low Supply Current Reduces Spikes During Output Transitions
• Single-Supply Operation From 2 V to 15 V
• Functionally interchangeable With the NE556; Has Same Pinout

LinCMOS is a trademark of Texas Instruments Incorporated.

• Iq (Typ) (uA)
• 130
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85, -55 to 125, 0 to 70
• Supply voltage (Max) (V)
• 15
• Supply voltage (Min) (V)
• 2

TLC556的完整型号有：TLC556CD、TLC556CDR、TLC556CN、TLC556ID、TLC556IDR、TLC556IN、TLC556MD、TLC556MDG4、TLC556MDR，以下是这些产品的关键参数及官网采购报价：

TLC556CD，工作温度：0 to 70，封装：SOIC (D)-14，包装数量MPQ：50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TLC556CD的批量USD价格：0.52（1000+）

TLC556CDR，工作温度：PropertyValue，封装：SOIC (D)-14，包装数量MPQ：2500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TLC556CDR的批量USD价格：0.395（1000+）

TLC556CN，工作温度：PropertyValue，封装：PDIP (N)-14，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TLC556CN的批量USD价格：0.498（1000+）

TLC556ID，工作温度：PropertyValue，封装：SOIC (D)-14，包装数量MPQ：50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TLC556ID的批量USD价格：0.563（1000+）

TLC556IDR，工作温度：-40 to 85，封装：SOIC (D)-14，包装数量MPQ：2500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TLC556IDR的批量USD价格：0.435（1000+）

TLC556IN，工作温度：PropertyValue，封装：PDIP (N)-14，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TLC556IN的批量USD价格：0.541（1000+）

TLC556MD，工作温度：-55 to 125，封装：SOIC (D)-14，包装数量MPQ：50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TLC556MD的批量USD价格：0.797（1000+）

TLC556MDG4，工作温度：PropertyValue，封装：SOIC (D)-14，包装数量MPQ：50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TLC556MDG4的批量USD价格：0.862（1000+）

TLC556MDR，工作温度：-55 to 125，封装：SOIC (D)-14，包装数量MPQ：2500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TLC556MDR的批量USD价格：0.71（1000+）

TLC556 TINA-TI Spice Model (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)