Texas Instruments TLC7701ID

Overview

TLC7701ID from Texas Instruments is a micropower supply voltage supervisor IC designed for reset control in microcomputer and microprocessor systems. It features a 1.1 V precision sense threshold, programmable delay via external capacitor (td = 2.1 × 10⁴ × CT), defined RESET output down to VDD ≥ 1 V, and operates across 2 V to 6 V supply range. Used in medical imaging power management where battery-backed static RAM retention is required.

For engineers reviewing the TLC7701ID datasheet, TLC7701ID pinout, TLC7701ID application, or TLC7701ID equivalent, this page delivers verified technical context, exact DRB package mapping, confirmed 8-pin SOIC-compatible pin functions, real-world timing behavior (1.1–4.2 ms delay), and validated alternatives for undervoltage monitoring in industrial and medical embedded systems.

Technical Context

The TLC7701ID implements a precision voltage sensor with temperature-compensated reference and automatic reset generation after supply voltage drop. Its SENSE input monitors system rail voltage against a fixed 1.1 V threshold (VIT– = 1.04–1.16 V), with 30 mV hysteresis (Vhys) to prevent chatter during threshold crossing.

It integrates a power-on reset generator asserting RESET when VDD reaches ≥1 V, and supports power-down control for static RAM via CONTROL pin logic. Delay time is externally set by capacitor CT, enabling configurable reset hold duration without internal oscillator or trimming.

Key Specifications

Pinout & Package

Package: DRB (8-pin SON, 3 mm × 3 mm, 0.5 mm pitch), non-magnetic variant optimized for medical imaging equipment per TI documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC7701ID, TLC7703ID offers identical form-factor and timing but shifts threshold upward for mid-rail use, while TPS3808G12DBVR trades flexibility (no external delay cap, no CONTROL pin) for extreme current reduction - making it viable only where 1.2 V sensing and minimal footprint outweigh configurability needs.

Availability

TLC7701ID is available at Aetrix Electronics and suitable for medical imaging systems, industrial PLC modules, and portable diagnostic devices requiring stable component supply with long-term lifecycle assurance.

Supply support for TLC7701ID 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 delivering analog, embedded processing, and connectivity solutions with broad industrial and automotive reach.

The TLC77xx family was engineered specifically for micropower voltage supervision in resource-constrained microcontroller systems, emphasizing precision thresholding, programmable timing, and battery-backed memory control - not general-purpose reset ICs.

FAQ

What is the exact sense threshold voltage of the TLC7701ID?

The TLC7701ID has a nominal sense threshold voltage of 1.1 V, with guaranteed min/max values of 1.04 V and 1.16 V across temperature and supply conditions. This fixed threshold is internally trimmed and temperature-compensated, enabling accurate 1.2 V domain supervision without external resistors - unlike the TLC7701's resistor-programmable variant.

Does the TLC7701ID support active-high and active-low reset outputs simultaneously?

Yes, the TLC7701ID provides both RESET (active-low) and RESET (active-high) outputs on separate pins. These are complementary signals generated internally, allowing direct interface with mixed-logic systems without external inverters - a key feature distinguishing it from single-output supervisors like the TPS3808 series.

How is the reset delay time configured on the TLC7701ID?

The reset delay time on the TLC7701ID is set externally using capacitor CT connected between the DELAY pin and GND. The relationship is td = 2.1 × 10⁴ × CT (seconds), so a 100 nF capacitor yields ~2.1 ms delay. This fully programmable timing eliminates reliance on internal oscillators or process-dependent RC elements.

Can the TLC7701ID be used to control battery-backed static RAM during power failure?

Yes, the TLC7701ID includes dedicated CONTROL pin logic that enables automatic SRAM disable during main power loss. When CONTROL is grounded, RESET becomes active-high and can drive the chip select (CS) line of battery-backed SRAM, preserving data integrity - a function explicitly documented in TI's Figure 10 application circuit.

What is the operating temperature range and package type of the TLC7701ID?

The TLC7701ID is specified for operation from –40°C to 85°C and is packaged in an 8-pin SON (DRB) format measuring 3 mm × 3 mm with 0.5 mm pitch. This RoHS-compliant, non-magnetic package meets requirements for medical imaging equipment per TI's packaging documentation.