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Texas Instruments TL7712AIDR
- Part No.:
- TL7712AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL7712AIDR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:850
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Product details
Overview
TL7712AIDR from Texas Instruments is a precision supply-voltage supervisor IC designed for reset control in 12 V microprocessor and memory systems. It features a 10.8 V ±0.2 V threshold voltage (VIT−), 35 mV hysteresis, wide 3.5–18 V operating supply range, externally adjustable reset pulse duration via CT pin, and dual active-high/active-low open-collector RESET outputs.
For engineers reviewing the TL7712AIDR datasheet, TL7712AIDR pinout, TL7712AIDR application, or TL7712AIDR equivalent, this device serves as a robust undervoltage detection and power-on reset generator for industrial embedded controllers, automotive body electronics, and legacy 12 V logic systems requiring stable, temperature-compensated reset timing.
Technical Context
The TL7712AIDR implements a precision bandgap reference with <±16 mV drift over –40°C to +85°C and integrates a comparator with hysteresis to detect SENSE input voltage drops below 10.8 V. Its internal delay timer uses an external capacitor (CT) to generate a user-defined reset pulse width (e.g., 1.3 ms with 0.1 µF).
It operates with dual complementary reset outputs (RESET and RESET), both open-collector, enabling flexible interface with TTL/CMOS logic. The SENSE input accepts up to 20 V, supporting direct connection to 12 V rails without attenuation, while REF provides a stable 2.53 V reference usable for external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIT− Threshold | 10.8 V typical (10.6–11.0 V range); precise undervoltage detection point for 12 V systems |
| Hysteresis | 35 mV; prevents chatter during slow-rising/falling supply transitions |
| Supply Range | 3.5 V to 18 V; supports operation across brown-out and overvoltage margins |
| Reset Pulse Width | Adjustable via CT capacitor (e.g., 1.3 ms with 0.1 µF); ensures full system initialization |
| Reference Voltage | 2.53 V ±0.05 V at 25°C; stable, temperature-compensated output for external use |
| Operating Temp | –40°C to +85°C (I-grade); qualified for industrial and automotive under-hood environments |
| Output Type | Dual open-collector (RESET high-active, RESET low-active); enables flexible logic-level interfacing |
Pinout & Package
TL7712AIDR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, RoHS-compliant, with NIPDAU lead finish and Level-1 MSL rating (260°C peak reflow, unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (Pin 1) | Voltage reference output | Provides stable 2.53 V reference; requires 0.1 µF bypass capacitor to GND for noise immunity |
| RESIN (Pin 2) | Manual reset input | Active-low asynchronous reset trigger; pulls RESET/RESET active when asserted |
| CT (Pin 3) | Timing capacitor connection | Sets reset pulse duration (td = 1.3×10⁴ × CT seconds); connects to GND via external capacitor |
| GND (Pin 4) | Ground reference | Analog and digital ground return; must be low-impedance and star-connected near REF/CT decoupling caps |
| RESET (Pin 5) | Inverted reset output | Open-collector active-low signal; requires external pull-up for CMOS/TTL compatibility |
| RESET (Pin 6) | Non-inverted reset output | Open-collector active-high signal; complements Pin 5 for dual-signal reset architectures |
| SENSE (Pin 7) | Supply monitoring input | Monitors 12 V rail directly (0–20 V range); triggers reset when voltage falls below 10.8 V |
| VCC (Pin 8) | Power supply input | Primary supply input (3.5–18 V); powers internal circuitry and enables operation above 3.6 V |
Key Features
| Feature | Design Value |
|---|---|
| Externally adjustable reset timeout | Capacitor-programmable delay (0.65–2.6 ms typical) ensures reliable microprocessor initialization |
| Precision voltage sensing | 10.8 V threshold with ±0.2 V tolerance and 35 mV hysteresis guarantees clean, chatter-free reset assertion |
| Temperature-stable reference | 2.53 V reference varies ≤16 mV from –40°C to +85°C, enabling accurate external monitoring or biasing |
| Wide supply operation | Functional from 3.5 V to 18 V allows use in 5 V, 12 V, and 15 V systems without external regulation |
| Dual complementary reset outputs | Simultaneous active-high and active-low open-collector signals simplify interface with diverse logic families |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring 12 V battery-supplied microcontroller power in programmable logic controllers exposed to wide temperature and load transients. IC Role / Device Role / Timing Role: Primary undervoltage supervisor generating synchronized reset pulses upon brown-out or cold-cranking events. Use Value: Prevents corrupted firmware execution by holding MCU in reset until 12 V rail stabilizes above 10.8 V with 35 mV hysteresis. |
Use Scenario: Reset coordination for door module ECUs powered from vehicle battery with frequent load-dump and start-stop cycling. IC Role / Device Role / Timing Role: Dual-output reset generator ensuring deterministic state recovery after transient voltage sags below 10.8 V. Use Value: Eliminates undefined MCU states during engine cranking by asserting both RESET and RESET for ≥1.3 ms using 0.1 µF CT. |
| Legacy 12 V Memory Systems | Industrial Power Supply Sequencing |
Use Scenario: Ensuring reliable boot of EPROM-based controllers in factory automation equipment with unregulated 12 V supplies. IC Role / Device Role / Timing Role: Precision threshold detector with REF output used to bias external comparators for multi-rail validation. Use Value: Guarantees memory initialization only after VCC exceeds 10.8 V and remains stable for programmable delay, preventing data corruption. |
Use Scenario: Coordinating startup of auxiliary 5 V and 3.3 V regulators downstream of a primary 12 V supply in telecom power systems. IC Role / Device Role / Timing Role: Master reset initiator triggered by 12 V rail; RESET output enables enable pins of secondary regulators via discrete logic. Use Value: Enables deterministic power-up sequencing with user-adjustable delay, avoiding race conditions between supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supply-voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL7712ACDR | Same 10.8 V threshold, SOIC-8 package, but rated for 0°C to 70°C (C-grade) instead of –40°C to +85°C | Not suitable for extended temperature environments; limited to commercial indoor applications | Select TL7712ACDR only for cost-sensitive, non-industrial designs with ambient temperature <70°C |
| TPS3808G12DBVR | 12 V threshold (±0.5%), fixed 200 ms delay, push-pull outputs, lower quiescent current (1.1 µA vs 1.8 mA) | Lacks adjustable delay and dual outputs; requires external pull-ups only if open-drain mode enabled | Choose TPS3808G12DBVR for ultra-low-power battery-backed systems where fixed delay suffices and temperature range is standard |
Compared with TL7712ACDR and TPS3808G12DBVR, the TL7712AIDR uniquely combines industrial temperature grade, user-adjustable reset timing, dual complementary outputs, and a buffered reference - making it optimal for legacy 12 V systems demanding field-proven reliability and design flexibility.
Availability
TL7712AIDR is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and legacy 12 V memory systems requiring stable component supply with long lifecycle support.
Supply support for TL7712AIDR 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, embedded processing, and power management technologies, with decades of leadership in precision analog ICs.
The TL77xxA family was engineered for robust reset control in microcomputer systems, targeting applications where supply integrity, temperature stability, and configurable timing are critical - especially in industrial and automotive environments.
FAQ
What is the exact undervoltage detection threshold of the TL7712AIDR?
The TL7712AIDR has a nominal negative-going input threshold voltage (VIT−) of 10.8 V, with a guaranteed range of 10.6 V to 11.0 V at 25°C. This threshold is specified for the TL7712A variant and applies directly to the TL7712AIDR, enabling precise 12 V rail monitoring without external resistive dividers.
Does the TL7712AIDR require external components to function?
Yes - the TL7712AIDR requires three external components for basic operation: a 0.1 µF capacitor from REF to GND (for reference stability), a timing capacitor (CT) from Pin 3 to GND (to set reset pulse width), and pull-up resistors on RESET and RESET outputs (since both are open-collector). No external resistors are needed for SENSE when monitoring a 12 V rail directly.
Can the TL7712AIDR be used with a 5 V supply?
Yes - the TL7712AIDR operates over 3.5 V to 18 V, so it functions with 5 V VCC. However, its 10.8 V SENSE threshold means it cannot monitor a 5 V rail directly; for 5 V supervision, the TL7705A (4.55 V threshold) is the appropriate family member. The TL7712AIDR's REF output remains valid at 5 V VCC.
What is the purpose of the dual RESET outputs on the TL7712AIDR?
The TL7712AIDR provides two complementary open-collector outputs: RESET (active-high) and RESET (active-low). This allows simultaneous interface with both positive-logic and negative-logic reset inputs in mixed-technology systems - for example, driving the /RESET pin of a microcontroller while also enabling a power-good indicator LED - without additional inverters.
Is the TL7712AIDR pin-compatible with other TL77xxA variants?
Yes - all TL77xxA devices (TL7702A, TL7705A, TL7709A, TL7712A, TL7715A) share identical 8-pin SOIC (D) and PDIP (P) packages and pinouts. The TL7712AIDR can replace TL7705A or TL7709A on the same PCB, but system behavior changes due to different threshold voltages (10.8 V vs 4.55 V or 7.6 V), so firmware and power architecture must be verified.
TL7712AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 10.8V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1µs Maximum Propagation Delay
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL7712AIDR FAQ
1.How can I place an order for TL7712AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL7712AIDR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TL7712AIDR reliable?
The price and inventory of TL7712AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL7712AIDR is usually 5 days.
3.What payment methods are accepted for TL7712AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL7712AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL7712AIDR?
TL7712AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL7712AIDR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TL7712AIDR?
For technical support, including TL7712AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL7712AIDR requirements.
6.How does Aetrix verify that TL7712AIDR is sourced from the original manufacturer or authorized distributors?
All TL7712AIDR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL7712AIDR meets industry standards.
7.What is the process for return or replacement of TL7712AIDR?
All TL7712AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TL7712AIDR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TL7712AIDR part is unused and in its original packaging.
Return procedure for TL7712AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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