Texas Instruments TL7715AIP

Overview

TL7715AIP from Texas Instruments is a precision supply-voltage supervisor IC designed as a reset controller for microprocessor systems operating at 15 V nominal supply. It features a fixed 13.5 V ±0.3 V undervoltage detection threshold (V_IT−), 45 mV hysteresis, externally adjustable reset pulse duration via CT pin, and dual active-high/active-low open-collector RESET outputs. Used in analog circuits requiring stable 15 V rail monitoring.

For engineers reviewing the TL7715AIP datasheet, TL7715AIP pinout, TL7715AIP application, or TL7715AIP equivalent, this page delivers verified electrical specs, SOIC/PDIP package mapping, functional pin roles, real-world use cases in analog power systems, and two validated alternative supervisors with documented threshold and timing differences.

Technical Context

The TL7715AIP integrates a temperature-compensated 2.53 V reference, a precision comparator with hysteresis, and an RC-based delay timer triggered by SENSE input crossing V_IT−. Its internal thyristor-based latch ensures reliable reset assertion during brownout events down to V_CC = 2 V.

It operates across 3.5 V to 18 V supply range with 1.8–3 mA quiescent current, supports external capacitor timing (td = 1.3×10⁴ × C_T), and provides dual complementary reset signals-RESET (active-low) and RESET (active-high)-both open-collector with ±16 mA drive capability.

Key Specifications

Pinout & Package

TL7715AIP uses an 8-pin PDIP package (9.81 mm × 6.35 mm) with through-hole mounting and standard DIP footprint compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supply-voltage supervisor applications.

Compared with TL7712ACP and TPS3808G33DBVR, TL7715AIP uniquely delivers native 13.5 V threshold accuracy, integrated reference, and capacitor-programmable timing-making it irreplaceable for direct 15 V rail supervision without design compromises.

Availability

TL7715AIP is available at Aetrix Electronics and suitable for analog power supply monitoring, industrial 15 V control systems, and legacy microprocessor reset applications requiring stable component supply and long-term lifecycle support.

Supply support for TL7715AIP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with decades of leadership in power management and precision analog ICs.

The TL77xxA product line was engineered specifically for robust, low-cost reset control in microcomputer and microprocessor systems-emphasizing precision threshold accuracy, hysteresis stability, and flexible timing in industrial and analog applications.

FAQ

What is the exact undervoltage detection threshold of TL7715AIP?

The TL7715AIP has a guaranteed negative-going input threshold (V_IT−) of 13.2 V to 13.8 V at 25°C, with a typical value of 13.5 V. This threshold is factory-trimmed and includes 45 mV hysteresis to prevent oscillation during slow supply decay. The specification applies directly to the SENSE pin and is valid across the full –40°C to +85°C operating temperature range.

Can TL7715AIP monitor a 15 V supply without external components?

Yes, TL7715AIP can directly monitor a 15 V supply by connecting the SENSE pin to the rail. Its 13.5 V threshold is designed for nominal 15 V systems. However, a 0.1 µF capacitor is required between REF and GND, and another 0.1 µF capacitor between CT and GND to ensure stable operation and accurate timing. No resistor divider is needed for direct 15 V sensing.

What package types are offered for TL7715AIP?

TL7715AIP is specifically the 8-pin PDIP (plastic dual in-line package) variant with body dimensions 9.81 mm × 6.35 mm. It is distinct from SOIC (D) and SO (PS) variants like TL7715ACD or TL7715ACPSR. The 'P' suffix in TL7715AIP denotes PDIP packaging, and the 'I' indicates –40°C to +85°C temperature grade.

How is the reset pulse duration set on TL7715AIP?

The reset pulse duration on TL7715AIP is set by an external capacitor connected between the CT pin (Pin 3) and GND. The relationship is td ≈ 1.3 × 10⁴ × C_T, where C_T is in farads and td is in seconds. For example, a 0.1 µF capacitor yields a typical pulse width of 1.3 ms. This allows precise, repeatable timing without trimming resistors or complex circuitry.

Does TL7715AIP provide both active-high and active-low reset outputs?

Yes, TL7715AIP provides two complementary open-collector reset outputs: RESET (Pin 6, active-low) and RESET (Pin 5, active-high). Both outputs assert simultaneously during undervoltage or manual reset (RESIN). Each supports ±16 mA drive and requires appropriate external pull-up/pull-down resistors depending on the target logic family.