TLC556MDR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TLC556MDR is a dual CMOS timer/oscillator IC integrating 2 independent timer functions with a maximum output frequency of 1.2 MHz, operable at 5 V or 15 V nominal supply. It generates precise pulse and rectangular waveforms in a 14-pin SOIC package with low power consumption. Available in tape-and-reel with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- TLC556MDR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2862(MOQ 250)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent timer channels in a single 14-pin SOIC enabling two simultaneous timing or oscillator functions with minimal component count
- Up to 1.2 MHz maximum output frequency for high-speed pulse generation, exceeding the 555's 300 kHz typical limit
- CMOS technology providing low quiescent current and wide 5 V to 15 V supply compatibility for battery-powered and industrial designs
Applications
The TLC556MDR is well-suited for dual-channel timer circuits, multi-phase clock generation, and PWM signal sources in industrial control systems requiring operating frequencies up to 1.2 MHz. Its CMOS architecture and 5 V to 15 V supply range make it ideal for battery-operated instrumentation, programmable delay circuits, and tone generators in consumer electronics. Sequential timing logic, LED flashers requiring independent duty-cycle control, and sensor trigger circuits also benefit from its dual-timer integration in a compact 14-pin SOIC.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | IT CAN ALSO OPERATE AT 15V NOMINAL |
| Analog IC - Other Type | PULSE; RECTANGULAR |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Number of Functions | 2 |
| Output Frequency-Max | 1.2MHz |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 1.4mA |
| Supply Voltage-Max (Vsup) | 15V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## TLC556MDR Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TLC556MDR:
Frequently Asked Questions
What maximum output frequency does the TLC556MDR support compared to bipolar 555 timers?
The TLC556MDR supports a maximum output frequency of 1.2 MHz, which is approximately 4 times higher than the 300 kHz typical maximum of classic bipolar NE555 timers. This expanded frequency range makes the TLC556MDR suitable for high-frequency PWM generation, ultrasonic driver circuits, and fast pulse-width modulation stages in switching power supplies operating above 500 kHz.
Can the TLC556MDR run two independent timing functions simultaneously on a single chip?
Yes, the TLC556MDR integrates 2 completely independent timer circuits, each with its own trigger, threshold, discharge, and output pins. Both timers share only the supply and ground pins, so each can be configured independently in monostable or astable mode with different timing resistors and capacitors, enabling complex sequential or overlapping timing sequences from a single 14-pin SOIC device.
How does the CMOS process of TLC556MDR reduce power consumption versus bipolar equivalents?
CMOS technology in the TLC556MDR yields quiescent supply current in the microampere range, typically below 100 µA at 5 V, compared to the 3 mA to 10 mA typical for bipolar 556 timers. This 30x to 100x reduction in standby current is essential for battery-powered applications such as portable alarm systems, IoT sensor nodes, and remote controls where months of operation from a single AA cell are required.
Which package does the TLC556MDR use and how does it compare to a through-hole DIP option?
The TLC556MDR is housed in a 14-pin Small Outline Package (SOIC) in the tape-and-reel format, with a body approximately 8.65 mm long and a 1.27 mm lead pitch. Compared to a 14-pin through-hole DIP, the SOIC footprint is approximately 40% smaller in PCB area, supporting higher-density surface-mount assemblies and automated pick-and-place manufacturing at volumes exceeding 1000 units per reel.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $1.4668 | $366.71 |
| 500+ | $1.4149 | $707.45 |
| 1000+ | $1.4015 | $1401.48 |
| 2500+ | $1.3270 | $3317.47 |
| 5000+ | $1.2998 | $6498.95 |
| 7500+ | $1.2862 | $9646.27 |
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