Overview
The TS555CDT is a low-power single CMOS timer produced by STMicroelectronics. It is designed to offer very low power consumption and high frequency capabilities, making it an efficient alternative to traditional bipolar timers like the NE555. The TS555CDT maintains accurate timing in both monostable and astable modes and is pin-to-pin functionally compatible with the NE555, allowing for easy integration into existing designs.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | - | 16 | V |
| Supply Current (ICC) at VCC = 5V | - | 110 | 250 | µA |
| Supply Current (ICC) at VCC = 3V | - | 90 | 230 | µA |
| Maximum Astable Frequency | - | - | 2.7 | MHz |
| Input Impedance | 10^12 | - | - | Ω |
| Output Compatibility | - | - | - | TTL, CMOS, Logic MOS |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Very low power consumption: 110 µA typ at VCC = 5 V and 90 µA typ 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.
Applications
The TS555CDT is suitable for a variety of applications where low power consumption and high frequency stability are critical. These include:
- Pulse generation and timing in low-power systems.
- Oscillator circuits in battery-powered devices.
- Timing and delay circuits in automotive and industrial control systems.
- Replacement for NE555 in existing designs to reduce power consumption.
Q & A
- What is the typical supply current of the TS555CDT at VCC = 5V?
The typical supply current is 110 µA at VCC = 5V.
- What is the maximum astable frequency of the TS555CDT?
The maximum astable frequency is 2.7 MHz.
- Is the TS555CDT compatible with the NE555?
Yes, it is pin-to-pin functionally compatible with the bipolar NE555.
- What is the operating temperature range of the TS555CDT?
The operating temperature range is -40°C to +125°C.
- What types of outputs are compatible with the TS555CDT?
The outputs are compatible with TTL, CMOS, and logic MOS.
- How does the TS555CDT reduce power consumption compared to the NE555?
The TS555CDT has a significantly lower supply current, typically 110 µA at VCC = 5V, compared to the NE555's 3 mA.
- What are the benefits of reduced supply current spikes during output transitions?
Reduced supply current spikes enable the use of lower decoupling capacitors.
- What is the input impedance of the TS555CDT?
The input impedance is 10^12 Ω.
- Can the TS555CDT be used in battery-powered devices?
Yes, it is suitable for battery-powered devices due to its low power consumption.
- What are some common applications of the TS555CDT?
Common applications include pulse generation, oscillator circuits, timing and delay circuits, and as a replacement for NE555 in existing designs.
