PT8A2516TAEX

Programmable Timers And Oscillators Overview

The PT8A2516TAEX is a CMOS LSI timer chip manufactured by Diodes Incorporated, designed for applications requiring adjustable timing intervals. It operates within a supply voltage range of 3.5V to 5.5V and features an integrated power-on reset circuit and logic control system. The device supports relay output activation without external oscillators and allows timer adjustment from 20 minutes to 16 hours via external R/C components. It includes a Quick Test Mode (QTM) for manufacturing efficiency and is available in lead-free SOT23-5L packages.

Programmable Timers And Oscillators Feature Summary

• Adjustable Timer Range: Supports timing intervals from 20 minutes up to 16 hours using external R/C circuits.
• Integrated Reset Function: Includes power-on reset circuitry and key scan detection for restart capabilities.
• Quick Test Mode (QTM): Enables accelerated testing during manufacturing with automatic exit after the test period.
• Low Component Count: Requires minimal external parts, utilizing internal oscillator checks and simple R/C timing networks.

Programmable Timers And Oscillators Applications

• Timer circuits
• Relay control systems

Programmable Timers And Oscillators Procurement Notes

Verify that the ordering suffix 'TAEX' corresponds to the SOT23-5L package configuration as specified in the datasheet. Confirm that the 'E' suffix indicates lead-free and green material compliance. Ensure the 'X' suffix denotes tape and reel packaging format before procurement to match assembly requirements.

Programmable Timers And Oscillators Selection Notes

Select this component when a simple, low-cost timer solution with adjustable duration between 20 minutes and 16 hours is required. Ensure the application voltage falls within the 3.5V to 5.5V operating range. Consider the SOT23-5L package if surface-mount technology is preferred over through-hole options like the TO94-4L variant.

Programmable Timers And Oscillators Part Context

The PT8A2516 series is produced by Diodes Incorporated, formerly Pericom Semiconductor Corporation. The TAEX designation specifically identifies the SOT23-5L package variant with lead-free and green material specifications and tape-and-reel packaging. This distinguishes it from the NE suffix version which utilizes a TO94-4L through-hole package.

Programmable Timers And Oscillators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternatives based on compatible supply voltage ranges (3.5V–5.5V), similar timer adjustability, and matching package dimensions for direct replacement.

Programmable Timers And Oscillators FAQ

How is the timer duration adjusted?

The timer duration is adjusted using external resistor and capacitor (R/C) components connected to the OSC pin, allowing settings from 20 minutes to 16 hours.

What is the function of the Quick Test Mode (QTM)?

QTM is designed to speed up manufacturer testing. It can be activated by holding the reset button for over 3 seconds upon power-up and exits automatically after the quick test timer expires.

Does the chip require an external oscillator?

No, the chip does not strictly require an external oscillator for basic operation as it includes an internal RC oscillator, though external R/C components are used for precise timing adjustments.