SA556NG4

Programmable Timers And Oscillators Overview

The SA556NG4 is a dual precision timer integrated circuit manufactured by Texas Instruments, belonging to the SA556 series. It integrates two independent 555-type timers within a single 14-pin package. The device operates on a supply voltage range of 4.5 V to 16 V and supports a maximum frequency of 100 kHz. It features TTL-compatible outputs with high drive capability, providing a high-level output current of 200 mA and a low-level output current of -200 mA. The component is designed for industrial applications, functioning reliably across an extended temperature range from -40°C to +85°C.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Configuration: Contains two independent precision timers in one 14-pin package.
• High Drive Capability: Outputs support up to 200 mA source/sink current.
• Extended Temperature Range: Rated for operation between -40°C and +85°C.
• Wide Supply Voltage: Operates effectively from 4.5 V to 16 V.

Programmable Timers And Oscillators Applications

• DC-to-DC converters
• Sequential timing circuits
• Time delay generation

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's latest documentation to confirm RoHS compliance status and lead times. Confirm that the 14-PDIP package matches the target PCB footprint requirements. Check for End-of-Life (EOL) notices or production discontinuation announcements prior to finalizing procurement plans.

Programmable Timers And Oscillators Selection Notes

Select the SA556NG4 when a design requires two synchronized or independent timing functions within a single component footprint. Ensure the application voltage remains within the 4.5 V to 16 V limits. Verify that the through-hole mounting style aligns with the assembly process. Consider the SA556N if the 'G4' suffix denotes a specific environmental compliance requirement not needed for the project.

Programmable Timers And Oscillators Part Context

The SA556NG4 is part of the broader SA55x family of precision timers produced by Texas Instruments. It serves as the dual-timer counterpart to the single-timer SA555. The 'G4' suffix typically indicates Green/RoHS-compliant manufacturing. This component shares internal architecture with the NE556 but offers improved performance characteristics suitable for industrial environments.

Programmable Timers And Oscillators Replacement Considerations

The NE556NG4 is a direct functional substitute with identical pinout and electrical specifications, differing primarily in operating temperature range (-40°C to +85°C vs. 0°C to 70°C). The SA556N is the non-RoHS compliant equivalent. Cross-referencing datasheets is required to verify thermal and compliance differences.