SE555DG4

Programmable Timers And Oscillators Overview

The SE555DG4 is a precision timer integrated circuit manufactured by Texas Instruments, belonging to the SE555 series. It functions as a single-channel 555-type timer/oscillator capable of operating at frequencies up to 100kHz. The device supports a supply voltage range of 4.5V to 18V and draws a typical supply current of 4mA. It features TTL-compatible outputs with high-level and low-level output currents of 200mA each. Designed for industrial applications, it operates within an extended temperature range of -55°C to +125°C and is housed in an 8-SOIC surface-mount package.

Programmable Timers And Oscillators Feature Summary

• Precision timing capabilities with a maximum frequency of 100kHz
• Wide supply voltage operation from 4.5V to 18V
• High drive capability with ±200mA output current
• Extended industrial temperature range of -55°C to +125°C

Programmable Timers And Oscillators Applications

• Industrial pulse generation circuits
• Precision timing control systems
• Oscillator applications requiring wide temperature stability

Programmable Timers And Oscillators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets. Check for lead-free packaging specifications if required for assembly processes. Ensure ordering suffixes match specific package variants such as SOIC-8. Validate supply chain documentation against current product lifecycle status.

Programmable Timers And Oscillators Selection Notes

Select this component when industrial temperature ranges (-55°C to +125°C) are required compared to commercial variants. Choose the SOIC-8 package for surface-mount assembly constraints. Verify that the 18V maximum supply voltage meets system requirements. Consider the 4mA supply current for power-sensitive designs. Ensure compatibility with TTL logic levels for interface connections.

Programmable Timers And Oscillators Part Context

The SE555DG4 is part of Texas Instruments' SE555 family of precision timers. The 'SE' prefix typically denotes military-grade or extended temperature specifications compared to standard NE555 devices. The 'G4' suffix indicates lead-free construction and environmental compliance. This variant shares functional pinouts with other 555-series timers but offers enhanced performance characteristics for demanding environments.

Programmable Timers And Oscillators Replacement Considerations

NE555DRG4: Commercial grade version with limited temperature range (0°C to 70°C). SA555DR: Automotive/extended grade variant with different temperature specs. SE555DR: Same series in SOIC package. Verify temperature ratings and supply voltage limits before substitution.