Supply Voltage Supervisor Texas Instruments TL7705ACP — monitoring 3–18 V, DIP-8

The Texas Instruments TL7705ACP is a supply voltage supervisor in a DIP-8 package designed to monitor single power rails with selectable threshold range from 3 V to 18 V. It combines voltage detection and reset output functions to ensure controlled startup, brown-out protection and reliable reset signaling for microcontrollers, digital logic and embedded systems. The device helps prevent undefined system behavior during power dips and ensures orderly operation during power sequencing and power failures.

Advantages

The TL7705ACP offers a wide detection range suitable for low-voltage and higher-voltage systems while keeping a compact DIP-8 footprint for easy through-hole mounting. It integrates accurate threshold detection and a reset supervisor function in a single package, reducing external components and simplifying board design. The dedicated reset output delivers a clean reset signal during undervoltage conditions and power cycling, improving system reliability without complex external circuitry.

Suitable for

• Microcontroller and MCU brown-out protection
• Embedded systems and consumer electronics power supervision
• Power sequencing and controlled startup of multi-rail systems
• Industrial control equipment requiring reliable reset signaling

Key specifications

• Supply voltage monitoring range: 3 V to 18 V
• Package type: through-hole DIP-8
• Reset supervisory function for undervoltage detection
• Single-channel voltage detection and reset output
• Low external component count; integrated supervisory functions

How to use

Place the TL7705ACP in the board as a through-hole DIP-8 device and connect the supply rail to be monitored to the appropriate input pin according to the device datasheet. Provide required bypassing capacitors on the supply pins and route the reset output to the reset input of the target microcontroller or logic. Configure any additional external pull-up or pull-down components as specified for the intended logic levels. Follow the manufacturer’s recommended layout and decoupling practices to ensure stable detection and reliable reset timing.

Recommendations

Use the TL7705ACP for systems where a single monitored rail requires dependable reset supervision; verify threshold and timing behavior against your system voltage margins and include adequate decoupling close to the device. For multi-rail supervision or specific timing needs, consider complementary supervisory devices or external timing components as necessary.