TLC556MDR

Overview

The TLC556MDR is a dual timer integrated circuit manufactured by Texas Instruments, belonging to the LinCMOS family. It integrates two independent 555-type timers within a single 14-pin SOIC package. The device operates on a supply voltage range of 2V to 15V and supports frequencies up to 2.1MHz. Key electrical specifications include a high-level output current of 100mA and a low-level output current of -10mA. The unit weight is approximately 128mg, and it is designed for surface-mount installation with an industrial temperature range spanning from -55°C to +125°C.

Feature Summary

• Dual CMOS Timer Architecture: Integrates two independent 555-type timers in one package.
• Wide Supply Voltage Range: Operates efficiently between 2V and 15V.
• High Current Drive Capability: Provides 100mA high-level output current.
• Industrial Temperature Rating: Functional across -55°C to +125°C.

Applications

• Precision timing circuits
• Pulse generation systems
• Sequential timing applications

Procurement Notes

Verify the specific suffix 'MDR' against the manufacturer's official datasheet to confirm pinout compatibility and electrical characteristics relative to other variants like 'MD'. Ensure the component meets RoHS3 compliance standards as indicated in public documentation. Cross-reference the 14-SOIC package dimensions with PCB footprint requirements before procurement.

Selection Notes

Select the TLC556MDR when dual timer functionality is required in a compact surface-mount form factor. This part is suitable for designs needing operation at lower supply voltages (down to 2V) compared to standard bipolar timers. Consider the 100mA output drive capability for direct load interfacing without additional buffering components.

Part Context

The TLC556MDR is part of the broader TLC556 series, which represents the CMOS version of the classic dual 555 timer. Unlike bipolar counterparts such as the NE556, this variant offers significantly lower power consumption while maintaining robust output drive capabilities. It serves as a modern replacement for legacy through-hole timers in space-constrained electronic designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other dual timer ICs based on specific voltage and current requirements.