Texas Instruments TL7702AIP

Overview

TL7702AIP from Texas Instruments is a precision supply-voltage supervisor IC designed for reset control in microprocessor and embedded systems. It features a 2.53 V ±5 mV threshold voltage (V_IT−), operates across 3.5–18 V supply range, delivers dual active-high/active-low reset outputs (RESET/RESET), and supports externally adjustable reset pulse duration via CT capacitor. It is used in industrial controllers requiring reliable power-on and brownout reset under −40°C to +85°C conditions.

For engineers reviewing the TL7702AIP datasheet, TL7702AIP pinout, TL7702AIP application, or TL7702AIP equivalent, this page provides verified functional specifications, validated PDIP-8 package mapping, confirmed dual-reset timing behavior, and real-world implementation guidance for undervoltage monitoring in safety-critical embedded power rails.

Technical Context

The TL7702AIP integrates a temperature-compensated 2.53 V reference, a precision comparator with 10 mV hysteresis on the SENSE input, and an RC-based delay timer whose output pulse width scales linearly with external capacitor CT (t_d = 1.3×10⁴ × C_T). Its dual open-collector RESET/RESET outputs enable direct interface with both active-low and active-high reset inputs.

During power-up, RESET asserts low when V_CC reaches ~3.6 V and remains active until SENSE exceeds V_IT+ (2.58 V), then delays before deassertion; during brownout, both outputs reassert immediately upon SENSE falling below V_IT−. The device guarantees operation down to 2 V V_CC, after which outputs become undefined.

Key Specifications

Pinout & Package

TL7702AIP is housed in an 8-pin PDIP (Plastic Dual In-line Package) with 9.81 mm × 6.35 mm body size and through-hole mounting. Pin 1 is REF (reference output), Pin 2 is RESIN (reset input), Pin 3 is CT (timing capacitor), Pin 4 is GND, Pin 5 is RESET (active-low), Pin 6 is RESET (active-high), Pin 7 is SENSE (voltage monitor input), and Pin 8 is V_CC (supply input).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL7702ACP and TPS3808G01QDBVRQ1, TL7702AIP uniquely combines industrial temperature range (−40°C to +85°C), user-adjustable reset timing via CT, and dual complementary outputs - making it optimal for non-automotive embedded systems needing field-configurable supervision.

Availability

TL7702AIP is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and test equipment requiring stable component supply with long lifecycle support and traceable sourcing.

Supply support for TL7702AIP 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 signal conditioning ICs.

The TL77xxA family was developed to deliver robust, precision reset control for microcomputer systems where reliable power sequencing and brownout immunity are essential - especially in industrial and instrumentation applications.

FAQ

What is the exact undervoltage threshold voltage of TL7702AIP?

The TL7702AIP has a nominal negative-going input threshold voltage (V_IT−) of 2.53 V, with a tolerance of ±5 mV at 25°C. This value is temperature-compensated and remains stable across the full −40°C to +85°C operating range, enabling precise supervision of 2.5 V and 3.3 V supply rails. The TL7702AIP datasheet specifies this parameter in Section 6.5 Electrical Characteristics.

Does TL7702AIP support manual reset functionality?

Yes, TL7702AIP supports manual reset via the RESIN pin (Pin 2). Applying a logic-high signal (>2 V) to RESIN forces immediate assertion of both RESET and RESET outputs, regardless of SENSE voltage or supply condition. This feature allows external push-button or system-level reset initiation, and is fully documented in the Pin Functions table and Functional Block Diagram sections of the TL7702AIP datasheet.

What package type and lead finish does TL7702AIP use?

TL7702AIP uses an 8-pin PDIP (Plastic Dual In-line Package) with dimensions 9.81 mm × 6.35 mm and NIPDAU (Nickel-Palladium-Gold) lead finish. It is RoHS-compliant, rated for −40°C to +85°C operation, and supplied in tubes of 50 units. This package is through-hole mountable and compatible with standard wave-soldering processes.

Can TL7702AIP monitor voltages other than its internal 2.53 V threshold?

Yes, TL7702AIP can supervise any supply voltage using an external resistor divider on the SENSE pin. The internal 2.53 V comparator compares the divided voltage against its reference, allowing supervision of 5 V, 12 V, or higher rails. For example, a 2:1 divider enables 5.06 V detection. This capability is explicitly described in the TL7702AIP datasheet Section 8.1 Overview and Figure 16 layout example.

Is TL7702AIP pin-compatible with other TL77xxA variants like TL7705AIP?

No, TL7702AIP is not pin-compatible with TL7705AIP or other TL77xxA variants in terms of electrical function - though they share identical PDIP-8 pinouts and physical layout, their internal threshold voltages differ (2.53 V vs. 4.55 V). Swapping them without adjusting the SENSE network will cause incorrect reset behavior. The TL7702AIP datasheet confirms distinct V_IT− values per part number in Table 6.5.