Overview
The TLC555IDG4 is a monolithic timing circuit produced by Texas Instruments, utilizing the TI LinCMOS™ technology. This timer is fully compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. It is designed to offer low power consumption and high accuracy in time delays and oscillations, thanks to its high input impedance which allows the use of smaller timing capacitors compared to the NE555 or LM555. The device supports single-supply operation from 2 V to 15 V and is functionally interchangeable with the NE555, having the same pinout.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 2 | - | 15 | V |
| Supply Current (IDD) at 25°C | 250 | 360 | 600 | µA |
| Supply Current (IDD) Full Range | - | - | 1000 | µA |
| Output High Current (IOH) | - | 10 | - | mA |
| Output Low Current (IOL) | - | 100 | - | mA |
| Trigger Voltage (VIT) | 4.55 | 5 | 5.45 | V |
| Threshold Voltage (VTH) | 9.35 | 10 | 10.65 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Very low power consumption: 1-mW typical 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 typical, Source 10-mA typical.
- Output fully compatible with CMOS, TTL, and MOS logic.
- Low supply current reduces spikes during output transitions.
- Single-supply operation from 2 V to 15 V.
- Functionally interchangeable with the NE555; has same pinout.
- ESD protection exceeds 1000 V per ANSI/ESDA/JEDEC JS-001.
- Available in Q-temp automotive and high-reliability automotive applications.
Applications
The TLC555IDG4 is versatile and can be used in a variety of applications, including:
- Time delay generation.
- Pulse width modulation.
- Pulse position modulation.
- Linear ramp generator.
- Astable and monostable multivibrator circuits.
- Automotive and industrial control systems due to its high reliability and ESD protection.
Q & A
- What is the operating voltage range of the TLC555IDG4?
The TLC555IDG4 operates from a single supply voltage ranging from 2 V to 15 V.
- What is the maximum operating frequency of the TLC555IDG4?
The TLC555IDG4 can operate at frequencies up to 2 MHz.
- How does the TLC555IDG4 compare to the NE555 in terms of power consumption?
The TLC555IDG4 has very low power consumption, typically 1 mW at VDD = 5 V, which is lower than the NE555.
- What are the trigger and threshold voltage levels for the TLC555IDG4?
The trigger level is approximately one-third of the supply voltage, and the threshold level is approximately two-thirds of the supply voltage. These levels can be altered using the control voltage terminal (CONT).
- Can the TLC555IDG4 be used in automotive applications?
Yes, the TLC555IDG4 is available in Q-temp automotive and is suitable for high-reliability automotive applications.
- What is the output current capability of the TLC555IDG4?
The TLC555IDG4 has a high output current capability, with a sink current of 100 mA typical and a source current of 10 mA typical.
- Is the TLC555IDG4 compatible with CMOS, TTL, and MOS logic?
Yes, the TLC555IDG4 is fully compatible with CMOS, TTL, and MOS logic.
- What is the ESD protection level of the TLC555IDG4?
The TLC555IDG4 has ESD protection that exceeds 1000 V per ANSI/ESDA/JEDEC JS-001.
- Can the TLC555IDG4 be used in astable mode?
Yes, the TLC555IDG4 is capable of operation in astable mode.
- How does the TLC555IDG4 handle unused inputs to prevent false triggering?
All unused inputs must be tied to an appropriate logic level to prevent false triggering.
