Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | LinCMOS™ |
| ProductStatus | Active |
| Type | 555 Type, Timer/Oscillator (Single) |
| Frequency | 2.1MHz |
| Voltage-Supply | 5V ~ 15V |
| Current-Supply | 360 µA |
| OperatingTemperature | -40°C ~ 125°C |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
| SupplierDevicePackage | 8-SOIC |
Overview
Description
The TLC555QDR is a low-power CMOS version of the classic 555 timer IC, designed by Texas Instruments. It operates over a 2V to 15V range, making it suitable for battery-powered applications. Key features include:
- Low power consumption (significantly lower than the NE555).
- High output drive capability (up to 100mA).
- Improved timing accuracy with reduced supply current spikes.
- Wide operating temperature range (–40°C to 125°C).
Available in an SOIC-8 (QDR) package, it’s ideal for precision timing, pulse generation, and oscillator circuits. Common applications include LED flashers, delay circuits, and PWM control.
Compared to the bipolar 555, the TLC555 offers better noise immunity and lower power draw, making it a preferred choice for modern electronics.
- Low power consumption (significantly lower than the NE555).
- High output drive capability (up to 100mA).
- Improved timing accuracy with reduced supply current spikes.
- Wide operating temperature range (–40°C to 125°C).
Available in an SOIC-8 (QDR) package, it’s ideal for precision timing, pulse generation, and oscillator circuits. Common applications include LED flashers, delay circuits, and PWM control.
Compared to the bipolar 555, the TLC555 offers better noise immunity and lower power draw, making it a preferred choice for modern electronics.
Equivalent
The TLC555QDR (a low-power CMOS version of the 555 timer) has several equivalents, including:
- NE555 (standard bipolar version, higher power)
- LMC555 (CMOS, similar low-power performance)
- TS555 (CMOS, low-voltage operation)
- ICM7555 (CMOS, low-power alternative)
For direct replacements, check TLC555IDR (same specs, different package) or TLC555CP (DIP package). Verify datasheets for exact compatibility.
- NE555 (standard bipolar version, higher power)
- LMC555 (CMOS, similar low-power performance)
- TS555 (CMOS, low-voltage operation)
- ICM7555 (CMOS, low-power alternative)
For direct replacements, check TLC555IDR (same specs, different package) or TLC555CP (DIP package). Verify datasheets for exact compatibility.
Pinout
The TLC555QDR is a low-power CMOS version of the classic 555 timer IC, packaged in an 8-pin SOIC (D).
Pin Functions:
1. GND – Ground
2. TRIG – Trigger input (starts timing when < 1/3 VCC)
3. OUT – Timer output
4. RESET – Active-low reset (halts timing when low)
5. CTRL – Control voltage (modulates threshold)
6. THRES – Threshold input (ends timing when > 2/3 VCC)
7. DISCH – Open-drain discharge (discharges timing capacitor)
8. VCC – Supply voltage (2V–15V)
It operates similarly to the standard 555 but with lower power consumption and improved performance. Common applications include timers, oscillators, and pulse generation.
Pin Functions:
1. GND – Ground
2. TRIG – Trigger input (starts timing when < 1/3 VCC)
3. OUT – Timer output
4. RESET – Active-low reset (halts timing when low)
5. CTRL – Control voltage (modulates threshold)
6. THRES – Threshold input (ends timing when > 2/3 VCC)
7. DISCH – Open-drain discharge (discharges timing capacitor)
8. VCC – Supply voltage (2V–15V)
It operates similarly to the standard 555 but with lower power consumption and improved performance. Common applications include timers, oscillators, and pulse generation.
Manufacturer
The TLC555QDR is manufactured by Texas Instruments (TI), a leading American semiconductor company. TI specializes in designing and producing analog and embedded processing chips, widely used in industrial, automotive, consumer electronics, and more. Known for innovation and reliability, TI is a key player in the global electronics industry. The TLC555QDR is a low-power CMOS version of the classic 555 timer IC, offering improved performance for precision timing applications.
Application
The TLC555QDR, a low-power CMOS version of the 555 timer, is widely used in:
- Timing circuits: Precision delays, pulse generation.
- Oscillators: Square/triangle wave generation.
- PWM control: Motor speed, LED dimming.
- Sensor interfaces: Triggering, debouncing.
- Power management: Voltage monitoring, power-on reset.
- Consumer electronics: Toys, alarms, timers.
Its low power consumption, wide voltage range (2V–15V), and small footprint make it ideal for portable and battery-operated devices.
- Timing circuits: Precision delays, pulse generation.
- Oscillators: Square/triangle wave generation.
- PWM control: Motor speed, LED dimming.
- Sensor interfaces: Triggering, debouncing.
- Power management: Voltage monitoring, power-on reset.
- Consumer electronics: Toys, alarms, timers.
Its low power consumption, wide voltage range (2V–15V), and small footprint make it ideal for portable and battery-operated devices.
Package
The TLC555QDR is a SOIC-8 package type. It is a surface-mount IC with 8 pins in a small outline integrated circuit (SOIC) form factor, suitable for compact PCB designs. The "DR" suffix indicates the tape-and-reel packaging for automated assembly. Dimensions are typically 4.9mm x 3.9mm x 1.75mm.
