TLC555ID

Overview

The TLC555ID is a single-channel CMOS timer manufactured by Texas Instruments, utilizing the LinCMOS process. It operates within a supply voltage range of 2V to 15V and supports an oscillation frequency up to 2.1MHz. The device features a typical static current of 360µA and provides a sink current capability of 100mA with a source current of 10mA. Designed for industrial applications, it functions reliably between -40°C and +85°C. Packaged in an 8-SOIC surface-mount format measuring 4.9mm x 3.91mm x 1.58mm, it offers rail-to-rail output swing compatible with CMOS, TTL, and MOS logic families.

Feature Summary

• LinCMOS technology enabling low power consumption (1mW typical at 5V) and high input impedance
• Industrial temperature rating (-40°C to +85°C) with ESD protection exceeding 2000V per MIL-STD-883C Method 3015.2
• Direct pin-compatible replacement for NE555 with wider operating voltage range (2V–15V)
• High drive capability with 100mA sink and 10mA source output currents

Applications

• Precision timing and pulse generation circuits
• Sequence timing and time delay generation
• Pulse width modulation (PWM) controllers
• Linear ramp generators

Procurement Notes

Verify the specific suffix 'ID' confirms the industrial temperature grade (-40°C to +85°C) and SOIC-8 package variant. Confirm RoHS compliance status and moisture sensitivity level (MSL 1) requirements against the target assembly process specifications before finalizing procurement orders.

Selection Notes

Select the TLC555ID over bipolar alternatives when lower quiescent current and smaller external timing capacitors are required due to higher input impedance. Ensure the design accommodates the 2V minimum supply voltage and verify that the 100mA sink current meets load requirements, as source current is limited to 10mA.

Part Context

The TLC555ID belongs to the TLC555 family of low-power CMOS timers from Texas Instruments. This series serves as a modern, energy-efficient alternative to traditional bipolar 555 timers, offering improved performance in battery-powered and portable electronic systems while maintaining functional compatibility with legacy designs.

Replacement Considerations

Functionally interchangeable with NE555, LM555, and LMC555 devices. Verify thermal management requirements when replacing bipolar variants, as the CMOS structure may exhibit different switching characteristics under heavy capacitive loads.