KA556DTF

Programmable Timers And Oscillators Overview

The KA556DTF is a dual timer integrated circuit manufactured by onsemi, belonging to the standard 555-type family. It integrates two independent timing circuits within a single 14-pin SOP package. The device operates with a supply voltage range of 4.5 V to 16 V and supports an operating temperature range from 0°C to +70°C. Each timer features output stages capable of sourcing or sinking up to 200 mA, allowing direct drive capabilities for loads such as relays or lamps without additional buffering components.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Configuration: Contains two independent 555-type timers in one package.
• High Current Output: Provides 200 mA source and sink current per channel.
• Wide Supply Range: Operates reliably between 4.5 V and 16 V.
• SMD Packaging: Available in SOP-14 surface-mount format.

Programmable Timers And Oscillators Applications

• Precision time delay generation
• Pulse width modulation (PWM) circuits
• Frequency division applications
• Sequential timing control

Programmable Timers And Oscillators Procurement Notes

The KA556DTF is listed as obsolete or end-of-life by the manufacturer. Availability is restricted to remaining stock or third-party distributors. Verification of RoHS compliance status and specific manufacturing lot dates is required before procurement due to the component's discontinued status.

Programmable Timers And Oscillators Selection Notes

Select this component when a dual-timer solution is needed in a surface-mount design. Ensure the application requires the specified 4.5V–16V supply range and 200mA output capability. For through-hole requirements, consider the LM556CN variant. Verify that the SOP-14 footprint matches the PCB layout constraints.

Programmable Timers And Oscillators Part Context

This part is part of the broader 556 dual timer family, which serves as a successor to the single NE555 timer. It allows designers to reduce board space by integrating two timing functions into a single 14-pin package compared to using two separate 555 ICs.

Programmable Timers And Oscillators Replacement Considerations

Direct pin-compatible replacements include the LM556CM (SOIC-14) and NE556DR2. Verify electrical specifications match exactly, particularly the output current ratings and supply voltage limits, as some generic equivalents may differ slightly.