NE555PE4

Overview

The NE555PE4 is a precision timer integrated circuit manufactured by Texas Instruments, belonging to the NE series. It operates within a supply voltage range of 4.5 V to 16 V and supports a maximum frequency of 500 kHz. The device features a single internal timer with TTL-compatible output capable of sourcing or sinking up to 200 mA. Designed for through-hole installation, it utilizes an 8-pin PDIP package measuring 9.81 mm in length, 6.35 mm in width, and 4.57 mm in height. The component functions reliably across an operating temperature range of 0 °C to 70 °C.

Feature Summary

• Operates on a supply voltage of 4.5 V to 16 V with a maximum frequency of 500 kHz
• Provides high-current TTL output capable of driving loads up to 200 mA
• Supports both monostable and astable timing modes with adjustable duty cycles
• Packaged in an 8-pin PDIP format suitable for through-hole mounting

Applications

• Pulse generation circuits
• Time delay generation systems
• Sequential timing control applications

Procurement Notes

Verify that the E4 suffix indicates lead-free compliance consistent with RoHS standards. Confirm the PDIP-8 package dimensions match the required PCB footprint. Ensure the commercial temperature grade (0 °C to 70 °C) meets the operational environment requirements. Cross-reference the manufacturer part number to distinguish from other 555 timer variants.

Selection Notes

Select this component when a bipolar 555 timer with high drive capability is required. The NE555PE4 offers superior current sourcing compared to CMOS alternatives but consumes more static power. Verify that the 4.5 V minimum supply voltage aligns with the system power rails. Consider the PDIP package constraints if space limitations favor surface-mount options like the NE555DR.

Part Context

The NE555PE4 is a specific variant of the widely used NE555 timer family produced by Texas Instruments. The 'E4' suffix typically denotes environmental compliance, specifically lead-free manufacturing. This part represents the standard bipolar version of the timer, distinct from low-power CMOS versions like the LMC555 or automotive-grade variants.

Replacement Considerations

Direct functional substitutes include the NE555DR (SOIC/TSSOP/PDIP), NE555N (STMicroelectronics), and LM555 (lower power). For pin-compatible replacements, verify package type differences between DIP and SOIC formats.