SE556J

Programmable Timers And Oscillators Overview

The SE556J is a dual precision timer from Texas Instruments, featuring two independent timing circuits within a single package. It operates in astable or monostable modes with external RC control. The device supports a supply voltage range of 4.5 V to 18 V and functions across an extended temperature range of -55°C to +125°C. Each timer output can source or sink up to 200 mA, utilizing active pullup or pulldown structures. The J suffix denotes a 14-pin ceramic dual in-line (CDIP) package designed for high-temperature industrial applications.

Programmable Timers And Oscillators Feature Summary

• Dual precision timing circuits per package
• Extended operating temperature: -55°C to +125°C
• Supply voltage range: 4.5 V to 18 V
• Output current capability: ±200 mA

Programmable Timers And Oscillators Applications

• Precision timers from microseconds to hours
• Pulse-shaping circuits
• Missing-pulse detectors
• Pulse-width modulators
• Sequential timers

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix 'J' corresponds to the CDIP package when sourcing. Confirm that the component meets the required military or industrial specifications if the application demands high reliability under extreme thermal conditions. Check for any recent documentation updates regarding lead finish or material compliance.

Programmable Timers And Oscillators Selection Notes

Select the SE556J over commercial variants like NE556 when operation below 0°C or above 70°C is required. Ensure the circuit design accommodates the 18 V maximum supply voltage limit. Consider the thermal resistance characteristics of the CDIP package for heat dissipation in enclosed environments compared to plastic packages.

Programmable Timers And Oscillators Part Context

The SE556 belongs to the Nx556/Sx556 family of dual precision timers. It shares functional similarities with the single-timer SE555 but integrates two units. The SE556J specifically utilizes the J package code for ceramic construction, distinguishing it from plastic versions like the N (PDIP) or D (SOIC) packages found in other series members.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers include NA556J, NE556J, and SA556J for pin-compatible replacements within the same family. Cross-manufacturer equivalents such as STMicroelectronics SE556 may be considered if electrical parameters align.