Overview
The TLC555CDRG4 is a monolithic timing circuit fabricated using Texas Instruments' 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 TLC555 is functionally interchangeable with the NE555, sharing the same pinout, and offers enhanced features such as rail-to-rail CMOS output and high output current capability. It also includes ESD protection exceeding 1000 V per ANSI/ESDA/JEDEC JS-001, making it suitable for high-reliability automotive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage Range | 2 to 15 | V |
| Typical Power Consumption at VDD = 5 V | 1 mW | |
| Maximum Operating Frequency | 2 MHz | |
| Output Current Capability (Sink) | 100 mA (typical) | |
| Output Current Capability (Source) | 10 mA (typical) | |
| Trigger Voltage | Approximately 1/3 of VDD | V |
| Threshold Voltage | Approximately 2/3 of VDD | V |
| Package Type | SOIC (8 pins) | |
| Package Size | 4.9 mm × 6.0 mm |
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
- Configuration control and print support
- Qualification to automotive standards
Applications
- Time delay generation
- Pulse width modulation
- Pulse position modulation
- Linear ramp generator
- Automotive applications requiring high reliability
- General-purpose timing and oscillator circuits
Q & A
- What is the operating temperature range of the TLC555CDRG4?
The operating temperature range is 0 to 70°C.
- What is the typical power consumption of the TLC555CDRG4 at VDD = 5 V?
The typical power consumption is 1 mW.
- What is the maximum operating frequency of the TLC555CDRG4?
The maximum operating frequency is up to 2 MHz.
- Is the TLC555CDRG4 compatible with other logic types?
Yes, it is fully compatible with CMOS, TTL, and MOS logic.
- What is the output current capability of the TLC555CDRG4?
The output current capability is 100 mA (sink) and 10 mA (source) typical.
- Can the TLC555CDRG4 be used in automotive applications?
Yes, it is available in Q-temp automotive and is suitable for high-reliability automotive applications.
- How does the TLC555CDRG4 compare to the NE555?
The TLC555CDRG4 is functionally interchangeable with the NE555 and has the same pinout.
- What kind of ESD protection does the TLC555CDRG4 offer?
The TLC555CDRG4 offers ESD protection exceeding 1000 V per ANSI/ESDA/JEDEC JS-001.
- What are some common applications of the TLC555CDRG4?
Common applications include time delay generation, pulse width modulation, pulse position modulation, and linear ramp generation.
- How should unused inputs be handled on the TLC555CDRG4?
All unused inputs must be tied to an appropriate logic level to prevent false triggering.
