Overview
The TS555IPT, produced by STMicroelectronics, is a low-power single CMOS timer that offers significant improvements over traditional bipolar timers like the NE555. It is designed to provide very low power consumption, high frequency capabilities, and reduced supply current spikes during output transitions. This component is pin-to-pin functionally compatible with the bipolar NE555, making it an excellent choice for applications requiring low power and high performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2 to 16 | V |
| Supply Current (Icc) at VCC = 5 V | 110 | µA |
| Supply Current (Icc) at VCC = 3 V | 90 | µA |
| Maximum Astable Frequency | 2.7 | MHz |
| Output Current (IOUT) | ±100 | mA |
| Operating Temperature Range (Toper) | -40 to +125 | °C |
| Input Impedance | 10^12 | Ω |
| Output Rise Time (tR) at Cload = 10 pF | 25 | ns |
| Output Fall Time (tF) at Cload = 10 pF | 20 | ns |
Key Features
- Very low power consumption: 110 µA at VCC = 5 V and 90 µA at VCC = 3 V.
- High maximum astable frequency of 2.7 MHz.
- Pin-to-pin functionally compatible with bipolar NE555.
- 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.
- Timing remains accurate in both monostable and astable modes.
Applications
The TS555IPT is suitable for a variety of applications where low power consumption and high frequency stability are crucial. These include:
- Monostable operation: Acts as a one-shot generator, useful in timing circuits and pulse generation.
- Astable operation: Functions as a multivibrator, ideal for generating square waves and other periodic signals.
- Power-efficient designs: Suitable for battery-powered devices and other low-power applications.
- Automotive and industrial control systems: Where reliability and low power consumption are essential.
Q & A
- What is the typical supply current of the TS555IPT at VCC = 5 V?
The typical supply current is 110 µA at VCC = 5 V. - What is the maximum astable frequency of the TS555IPT?
The maximum astable frequency is 2.7 MHz. - Is the TS555IPT compatible with the NE555?
Yes, it is pin-to-pin functionally compatible with the bipolar NE555. - What is the operating temperature range of the TS555IPT?
The operating temperature range is -40 to +125 °C. - What is the input impedance of the TS555IPT?
The input impedance is 10^12 Ω. - How does the TS555IPT reduce supply current spikes?
The TS555IPT reduces supply current spikes during output transitions, allowing for the use of lower decoupling capacitors. - Can the TS555IPT be used in astable mode?
Yes, it can be used in astable mode, functioning as a multivibrator. - What is the formula for the duration of the output HIGH state in monostable mode?
The duration is given by t = 1.1 R x C. - How does the reset function work in the TS555IPT?
A negative pulse applied to the reset terminal discharges the external capacitor and causes the cycle to start over. - What are some common applications of the TS555IPT?
Common applications include monostable and astable operations, power-efficient designs, and automotive and industrial control systems.
