TLC556MD Texas Instruments timers-oscillators (SOIC) In Stock
TLC556MD is a dual CMOS 555 timer IC from Texas Instruments in a 14-pin ceramic flat package, rated -40°C to 125°C. Starting at $1.23/unit (1000+). In stock, ships worldwide, 1-piece MOQ.
- Manufacturer
- Texas Instruments
- Package
- SOIC
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- TLC556MD Datasheet PDF
- Category
- timers-oscillators
- Price
- From $1.2300(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent timer circuits in one 14-pin package
- Wide supply voltage range: 2V to 15V single supply
- CMOS technology: ultra-low quiescent current <1mA
- Rail-to-rail output swing for direct logic interfacing
- Military-grade temperature range: -40°C to +125°C
- Compatible with standard 556 pinout for easy drop-in replacement
Applications
TLC556MD is widely used in industrial timing circuits, pulse-width modulation (PWM) generators, and precision oscillators requiring stable operation over wide temperature ranges. Suitable for automotive electronics, medical instruments, and military/aerospace designs where extended temperature performance and low power draw are critical.
Specifications
| Supply Voltage (Min) | 2V |
| Supply Voltage (Max) | 15V |
| Quiescent Current | 1mA |
| Output Current (Source/Sink) | 100mA |
| Operating Frequency (Max) | 2MHz |
| Number of Timers | 2 |
| Temperature Range (Min) | -40°C |
| Temperature Range (Max) | 125°C |
| Package Type | CERDIP |
| Pin Count | 14 |
| Logic Family | CMOS |
| Timing Accuracy | 1% |
| Package | SOIC |
Compliance & Regulatory
| RoHS Status | Compliant |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TLC556MD:
Classic bipolar dual 555, same pinout but higher power consumption, 4.5V–16V supply
Frequently Asked Questions
What is the TLC556MD and how does it differ from the standard NE556?
The TLC556MD is a dual CMOS timer IC from Texas Instruments, functionally equivalent to the classic NE556 but built on CMOS technology. Key differences: TLC556MD operates from 2V to 15V (vs 4.5V–16V for NE556), draws less than 1mA quiescent current (vs ~10mA for bipolar NE556), and features rail-to-rail output swing. The MD suffix indicates a ceramic flat-pack (CERDIP) package rated to +125°C, making it suitable for industrial and military applications.
What are the key electrical specifications of the TLC556MD?
Supply voltage: 2V to 15V; quiescent current: <1mA at 5V; timing accuracy: ±1% typical; operating frequency: up to 2MHz; output current: ±100mA source/sink; temperature range: -40°C to +125°C; package: 14-pin ceramic flat-pack (CERDIP). The dual timer shares a common supply but each timer operates completely independently with its own trigger, output, and control voltage pins.
What applications is the TLC556MD best suited for?
TLC556MD excels in applications requiring dual timing functions and extended temperature operation: precision monostable pulse generators, astable oscillators for PWM control, clock signal generation for industrial PLCs, automotive body electronics, LED dimming circuits, and military/aerospace timing subsystems. Its low power CMOS design also makes it ideal for battery-operated equipment where the NE556 would drain the battery too quickly.
What are common substitute or alternative parts for the TLC556MD?
Direct functional alternatives include the NE556 (bipolar, higher power, same pinout), SA556 (military-grade bipolar), ICM7556 (Renesas CMOS, similar low-power characteristics), LMC556 (TI CMOS, SOT-23 available), and TS556 (STMicroelectronics CMOS). For CMOS drop-in replacement, the ICM7556IPD from Renesas or TI's own LMC556CN are closest. Note that CMOS variants like TLC556MD should not be mixed with inductive loads without flyback protection.
How do I order the TLC556MD and what is the minimum order quantity?
TLC556MD can be ordered with a minimum quantity of 1 piece. Pricing starts at $3.40 for single units and drops to $1.23 per unit at 1,000+ pieces (see full price break table on this page). Lead time is typically 8–12 weeks for large quantities from authorized distributors. FindMyChip handles inquiry-only sourcing — submit an RFQ to get availability and best pricing from our global supplier network.
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About Texas Instruments
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 |
|---|---|---|
| 1+ | $3.4008 | $3.40 |
| 2+ | $2.5506 | $5.10 |
| 250+ | $1.7130 | $428.25 |
| 500+ | $1.3900 | $695.00 |
| 1000+ | $1.3100 | $1310.00 |
| 10000+ | $1.2300 | $12300.00 |
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