Texas Instruments TLC7701MPWREP

Overview

TLC7701MPWREP from Texas Instruments is a micropower supply voltage supervisor IC designed for precision reset control in microcomputer and microprocessor systems. It features a programmable delay time (2.1×10⁴×C_T), 1.1 V power-up reset threshold, ±30 mV hysteresis, and operates across –55°C to 125°C for aerospace/defense applications.

For engineers reviewing the TLC7701MPWREP datasheet, TLC7701MPWREP pinout, TLC7701MPWREP application, or TLC7701MPWREP equivalent, key selection criteria include its dual-resistor programmable sense threshold, totem-pole RESET/RESET outputs, extended temperature range, and compatibility with static RAM battery-backup power-down control circuits.

Technical Context

The TLC7701MPWREP implements a precision voltage monitor with internal temperature-compensated reference and automatic reset generation after undervoltage events. Its sense threshold is externally programmable via two resistors (R1/R2), unlike fixed-threshold variants (TLC7705/TLC7733), enabling custom trip points within 2 V–6 V supply range.

It integrates a power-on reset generator asserting RESET when VDD ≥1 V, and supports active-high RESET output when CONTROL is grounded. Delay timing is set by external capacitor CT, with td = 2.1×10⁴×CT (seconds), and includes logic for static RAM chip-select disable during power failure.

Key Specifications

Pinout & Package

TSSOP-8 (PW) package, 3.0 mm × 4.4 mm, 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC7705QPWREP and TPS3808G125DBVR, the TLC7701MPWREP uniquely supports externally programmable thresholds and integrated static RAM power-down control-critical for aerospace and defense systems requiring custom trip points and data retention during brownout.

Availability

TLC7701MPWREP is available at Aetrix Electronics and suitable for aerospace power sequencing, defense system brownout protection, and medical imaging battery backup requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC7701MPWREP 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 leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, aerospace, and medical markets.

The TLC77xx-EP product line delivers enhanced plastic packaged voltage supervisors engineered for defense, aerospace, and critical medical applications-featuring extended temperature operation, controlled baselines, and product traceability.

FAQ

What is the function of the CONTROL pin on the TLC7701MPWREP?

The CONTROL pin on the TLC7701MPWREP configures the RESET output polarity: when tied to GND, RESET becomes active-high, enabling direct interface to static RAM chip-select lines. This feature supports automatic memory disable during power failure, preserving data integrity in battery-backed systems. The TLC7701MPWREP leverages this pin to implement power-down control logic not found in standard supervisors.

How is the sense threshold voltage programmed on the TLC7701MPWREP?

The TLC7701MPWREP sense threshold is programmed using two external resistors (R1 and R2) connected between VDD, SENSE, and GND. Unlike fixed-threshold variants (e.g., TLC7705), this architecture allows custom trip points across the 2 V–6 V supply range. The TLC7701MPWREP datasheet provides nominal R1/R2 values (0 Ω and open) for its base 1.1 V threshold, with scaling equations for other voltages.

What is the maximum operating temperature range for the TLC7701MPWREP?

The TLC7701MPWREP is rated for operation from –55°C to 125°C, qualifying it for extended military and aerospace applications. This M-temp grade exceeds commercial and industrial temperature ranges and aligns with MIL-PRF-38535 Class V reliability standards. The TLC7701MPWREP maintains full electrical specifications across this full range, including threshold accuracy and delay timing stability.

Does the TLC7701MPWREP require external pull-up resistors on its RESET outputs?

No, the TLC7701MPWREP does not require external pull-up resistors because both RESET and RESET outputs use totem-pole drivers. These internally driven outputs actively assert high or low states without external biasing, simplifying PCB layout and reducing component count. This design differentiates the TLC7701MPWREP from open-drain supervisors and ensures robust drive capability up to 10 mA sink/source.

What delay timing capacitor value yields a 200 ms reset timeout for the TLC7701MPWREP?

Using the formula t_d = 2.1×10⁴ × C_T, a 200 ms (0.2 s) timeout requires C_T = 0.2 / 2.1×10⁴ = 9.52 nF. A standard 10 nF ceramic capacitor is recommended, yielding ~210 ms delay. The TLC7701MPWREP supports timing capacitor values from ~1 nF to 10 µF, enabling reset durations from ~100 µs to >200 s depending on application needs.