MC1455BP1G

Programmable Timers And Oscillators Overview

The MC1455BP1G is a monolithic timing circuit manufactured by onsemi, designed as a direct replacement for NE555 timers. It operates within a supply voltage range of 4.5 V to 16 V and supports both astable and monostable modes. The device features a high-current output capable of sourcing or sinking up to 200 mA, allowing it to drive TTL circuits directly. Key electrical characteristics include a temperature stability of 0.005% per °C and an initial timing accuracy of 1.0%. It is housed in an 8-pin PDIP package with a specified operating temperature range of 0°C to +70°C.

Programmable Timers And Oscillators Feature Summary

• Direct replacement for NE555 timers with adjustable duty cycle
• High current output structure sources or sinks up to 200 mA
• Timing control from microseconds through hours using external RC networks
• Temperature stability of 0.005% per °C

Programmable Timers And Oscillators Applications

• Linear voltage ramp generation
• Missing pulse detection
• Pulse width modulation
• Sequential timing test sequences

Programmable Timers And Oscillators Procurement Notes

Verify the 'G' suffix indicates a Pb-Free package configuration. Confirm the specific order code matches the required PDIP-8 shipping quantity of 50 units per rail. Ensure the ambient operating temperature requirements align with the 0°C to +70°C rating for the standard MC1455 variant rather than the extended temperature NCV or B series options.

Programmable Timers And Oscillators Selection Notes

Select this component when a CMOS-compatible timer requiring direct NE555 pin-for-pin replacement is needed. The MC1455BP1G is suitable for applications demanding high output drive capability (200 mA) and precise timing stability. Consider the MC1455B or NCV1455B variants if operation below 0°C or above +70°C is required, as the BP1G variant is rated for commercial temperatures only.

Programmable Timers And Oscillators Part Context

This part belongs to the MC1455 family of monolithic timing circuits produced by onsemi. The BP1G designation specifically identifies the PDIP-8 package version with lead-free manufacturing. It shares functional similarities with other 555-timer architectures but utilizes CMOS technology for lower power consumption while maintaining high output current capabilities.

Programmable Timers And Oscillators Replacement Considerations

The datasheet explicitly lists the MC1455 as a direct replacement for NE555 timers. No alternative manufacturer part numbers are provided in the official documentation.