TS556CN STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
The TS556CN is a dual CMOS timer IC from STMicroelectronics operating from 2 V to 16 V supply with a maximum output frequency of 2 MHz and ultra-low power consumption. Housed in a 14-pin DIP package, it integrates two independent 555-compatible timer circuits for astable and monostable timing applications.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- TS556CN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent CMOS timer channels in a single 14-pin DIP package
- Wide supply voltage range of 2 V to 16 V covering both low-power and industrial systems
- Maximum output frequency of 2 MHz for high-speed astable oscillator configurations
- CMOS technology for ultra-low supply current and compatibility with low-voltage microcontroller logic
- Direct pin-compatible replacement for the classic NE556 bipolar dual timer
- Monostable and astable operating modes selectable with external RC components
Applications
The TS556CN is widely used in pulse generation, oscillator, and timing circuits for industrial controls, home automation, and educational prototyping platforms where two independent timing functions are required in a single device. Its CMOS architecture and 2 V minimum supply make it suitable for battery-operated devices such as LED flashers, tone generators, and debounce circuits that demand lower quiescent current than bipolar 556 alternatives.
Specifications
| YTEOL | 0 |
| Additional Feature | IT CAN ALSO OPERATE FROM A 2V, 5V AND 12V NOMINAL SUPPLY |
| Analog IC - Other Type | PULSE; RECTANGULAR |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| Number of Functions | 2 |
| Output Frequency-Max | 2MHz |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 16V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TS556CN:
Frequently Asked Questions
How does the TS556CN compare to the classic NE556 in terms of supply voltage range and power consumption?
The TS556CN extends the supply voltage range down to 2 V compared to the NE556's 4.5 V minimum, allowing operation from a single AA or Li-ion cell. Its CMOS process also reduces quiescent current by roughly 10x versus the bipolar NE556, making it a better choice for battery-operated timing circuits where standby power matters.
What is the maximum oscillation frequency the TS556CN can generate in an astable configuration, and what limits it?
The TS556CN can generate output frequencies up to 2 MHz in astable mode. The practical frequency is set by external resistors and capacitors connected to the timing pins; at 2 MHz, very small RC values are required, and the internal CMOS switching speed of the output stage becomes the limiting factor for maintaining a clean waveform.
For a dual-channel LED blink application running from a 3 V coin cell, how would a designer configure both timers in the TS556CN?
Each of the 2 independent timer channels in the TS556CN can be wired in astable mode with separate RC networks to produce different blink rates for two LEDs. At 3 V supply, the CMOS output stage drives LEDs with currents up to 10 mA, and the wide timing range from milliseconds to seconds is set by resistors in the 1 kΩ to 1 MΩ range combined with capacitors from 1 nF to 10 µF.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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