Overview
The TS556IN is a low-power dual CMOS timer produced by STMicroelectronics. It is designed to offer very low power consumption and high frequency capabilities, making it an efficient and reliable choice for various timing applications. The TS556IN is pin-to-pin and functionally compatible with the bipolar NE556, but it significantly reduces power consumption and increases the maximum astable frequency. This component operates over a wide voltage range from 2 V to 16 V and is suitable for use in both monostable and astable modes.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Current (VCC = 5 V) | 220 | 220 | 500 | µA |
| Supply Current (VCC = 3 V) | 180 | 180 | 460 | µA |
| Maximum Astable Frequency | - | - | 2.7 | MHz |
| Operating Voltage Range | 2 | - | 16 | V |
| Output Rise Time (Cload = 10 pF) | - | 25 | - | ns |
| Output Fall Time (Cload = 10 pF) | - | 20 | - | ns |
| Trigger Propagation Delay | - | 100 | - | ns |
| Minimum Reset Pulse Width | - | 350 | - | ns |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Very low power consumption: 220 µA at VCC = 5 V and 180 µA at VCC = 3 V.
- High maximum astable frequency of 2.7 MHz.
- Pin-to-pin and functionally compatible with bipolar NE556.
- Wide voltage range: 2 V to 16 V.
- Reduced supply current spikes during output transitions.
- High input impedance: 10^12 Ω.
- Output compatible with TTL, CMOS, and logic MOS.
Applications
The TS556IN is suitable for a wide range of applications where precise timing and low power consumption are critical. These include:
- Pulse generation and timing circuits.
- Alarm and security systems.
- Automotive and industrial control systems.
- Medical devices requiring low power and accurate timing.
- Consumer electronics where power efficiency is a priority.
Q & A
- What is the typical supply current of the TS556IN at VCC = 5 V? The typical supply current is 220 µA.
- What is the maximum astable frequency of the TS556IN? The maximum astable frequency is 2.7 MHz.
- Is the TS556IN compatible with the NE556? Yes, it is pin-to-pin and functionally compatible with the bipolar NE556.
- What is the operating voltage range of the TS556IN? The operating voltage range is from 2 V to 16 V.
- What is the output rise time of the TS556IN with a load capacitance of 10 pF? The output rise time is 25 ns.
- What is the minimum reset pulse width for the TS556IN? The minimum reset pulse width is 350 ns.
- What is the operating temperature range of the TS556IN? The operating temperature range is from -40°C to 125°C.
- Is the TS556IN suitable for use in both monostable and astable modes? Yes, it is suitable for use in both monostable and astable modes.
- What is the high input impedance of the TS556IN? The high input impedance is 10^12 Ω.
- What types of outputs are compatible with the TS556IN? The outputs are compatible with TTL, CMOS, and logic MOS.
