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Texas Instruments TLC7701IDRG4
- Part No.:
- TLC7701IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC7701IDRG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
TLC7701IDRG4 from Texas Instruments is a micropower supply voltage supervisor IC designed for reset control in microcomputer and microprocessor systems. It features a programmable 1.1 V sense threshold, 2 V to 6 V supply range, 16 µA max supply current, and external capacitor–programmable delay time (td = 2.1 × 10⁴ × CT). It supports power-down control for static RAM with battery backup in medical imaging and industrial embedded systems.
For engineers reviewing the TLC7701IDRG4 datasheet, TLC7701IDRG4 pinout, TLC7701IDRG4 application, or TLC7701IDRG4 equivalent, this device requires attention to its dual active-high/active-low RESET outputs, CONTROL pin logic for memory retention, and DRB package thermal characteristics in high-reliability environments.
Technical Context
The TLC7701IDRG4 implements a precision voltage sensor with temperature-compensated reference and hysteresis (70 mV) to prevent chatter during threshold crossing. Its internal timer initiates after SENSE voltage drops below 1.1 V and holds RESET active until both threshold recovery and programmable delay td expire.
Unlike fixed-threshold variants in the TLC77xx family, the TLC7701 allows customization of its sense threshold using two external resistors on the SENSE pin - a capability confirmed only for TLC7701, not shared across the family. The CONTROL pin enables active-high RESET output when grounded, supporting chip-select disable during power failure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold | 1.1 V (±60 mV), programmable via external resistor divider on SENSE pin |
| Supply Range | 2 V to 6 V - supports single-cell Li-ion, 3.3 V, and 5 V rails |
| Supply Current | 16 µA max - enables multi-year battery operation in low-power systems |
| Delay Time | Programmable via external capacitor: td = 2.1 × 10⁴ × CT (e.g., 2.1 ms with 100 nF) |
| Operating Temp | –40°C to 125°C - qualified for extended industrial and automotive under-hood use |
| Reset Output | Active-low RESET and active-high RESET - dual polarity simplifies interface to diverse logic families |
| Hysteresis | 70 mV - ensures stable transition without oscillation near threshold |
Pinout & Package
The TLC7701IDRG4 is housed in an 8-pin SON (Small Outline No-lead) package, designated DRB, measuring 3 mm × 3 mm × 0.9 mm with wettable flanks for automated optical inspection. Thermal resistance θJA is 110°C/W (JEDEC standard board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2 V–6 V; RESET asserts when VDD ≥ 1 V during power-up |
| GND | Ground reference | Return path for all internal circuits and output drivers |
| SENSE | Voltage monitoring input | Connects to regulated rail or resistor divider; threshold set to 1.1 V (customizable) |
| CONTROL | Output polarity selector | Grounded → RESET active-high; pulled high → RESET active-low |
| RESIN | Manual reset input | Active-low asynchronous reset override (logic low forces RESET assertion) |
| RESET | Active-low reset output | Open-drain compatible; requires external pull-up for CMOS/TTL interfacing |
| RESET | Active-high reset output | Push-pull totem-pole; drives high/low without external components |
| NC | No connect | Pin 8 is unconnected; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Power-on reset generator | Asserts RESET at VDD ≥ 1 V - ensures reliable initialization before core logic powers up |
| Programmable delay timing | External capacitor sets td from ~1 ms to >1 s - eliminates need for internal RC trimming |
| Temperature-compensated reference | Stable 1.1 V threshold over –40°C to 125°C - avoids calibration in wide-temp designs |
| Static RAM power-down support | CONTROL + RESET coordination disables memory CS during brownout - preserves data with battery backup |
| Micropower operation | 16 µA max IDD - extends battery life in portable and remote sensing applications |
Applications
| Medical Imaging Power Sequencing | Industrial PLC Controller Reset |
|---|---|
Use Scenario: Ensures clean power-up sequencing for FPGA-based image acquisition modules in MRI and CT scanners where supply ramp rates vary. IC Role / Device Role / Timing Role: Voltage supervisor monitors 3.3 V and 1.8 V rails; asserts synchronized RESET until both stabilize and delay expires. Use Value: Prevents metastability in high-speed ADC interfaces by guaranteeing minimum reset pulse width (>2 ms with 100 nF). | Use Scenario: Maintains deterministic reset behavior in programmable logic controllers exposed to 24 V DC field bus transients and wide ambient temperature swings. IC Role / Device Role / Timing Role: Monitors 5 V system rail; uses CONTROL pin to generate active-high RESET for legacy microcontroller compatibility. Use Value: 125°C rating and 70 mV hysteresis eliminate false resets during thermal cycling or EMI-induced voltage dips. |
| Battery-Backed Data Logger | Automotive Body Control Module |
Use Scenario: Preserves SRAM contents during main power loss in environmental monitoring loggers powered by coin cells or energy harvesters. IC Role / Device Role / Timing Role: TLC7701IDRG4's CONTROL pin ties to MCU bank select; RESET disables SRAM CS while switching to backup battery. Use Value: Dual RESET outputs enable simultaneous deactivation of memory and activation of backup regulator control signals. | Use Scenario: Provides fail-safe reset for microcontrollers managing door locks, lighting, and window controls in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Supervises switched 5 V domain; RESIN accepts manual reset from service port; DRB package fits tight PCB spaces. Use Value: 2 V minimum operating voltage ensures supervision remains active during cranking events down to 6 V battery sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7701QD | Same 1.1 V threshold and DRB-compatible SOIC-8 package; rated for –40°C to 125°C (same temp range) | SOIC-8 footprint requires PCB redesign; lacks DRB's thermal performance and space savings | Select TLC7701QD only if legacy SOIC assembly infrastructure is in place and thermal density is not constrained. |
| TPS3801K33DBVR | Fixed 3.3 V threshold, 1.6 µA quiescent current, SOT-23-5 package; no CONTROL pin or dual RESET outputs | Not suitable for SRAM power-down control or custom threshold needs; limited to single-rail monitoring | Choose TPS3801K33DBVR only for cost-sensitive, single-threshold, ultra-low-IQ applications where dual outputs and programmability are unnecessary. |
Compared with TLC7701QD and TPS3801K33DBVR, the TLC7701IDRG4 uniquely combines programmable threshold, dual-polarity RESET, and DRB package thermal efficiency - making it irreplaceable in space-constrained, multi-rail, battery-backed systems requiring precise reset timing and memory retention logic.
Availability
TLC7701IDRG4 is available at Aetrix Electronics and suitable for medical imaging subsystems, industrial PLC controllers, and battery-backed data loggers requiring stable component supply and long-term lifecycle support.
Supply support for TLC7701IDRG4 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 and embedded processing solutions with emphasis on reliability, precision, and low-power innovation.
The TLC77xx family was engineered specifically for robust power-supply monitoring in microcomputer systems - prioritizing micropower operation, wide temperature resilience, and flexible reset architecture for mission-critical embedded control.
FAQ
What is the exact sense threshold voltage of the TLC7701IDRG4, and is it factory-trimmed?
The TLC7701IDRG4 has a nominal sense threshold voltage of 1.1 V, with a tolerance of ±60 mV (1.04 V to 1.16 V) over temperature and supply. Unlike fixed-threshold variants, the TLC7701IDRG4 allows external resistor programming of the SENSE node - meaning the effective threshold is set by the external divider, not solely by internal trimming. This design enables precise adjustment beyond factory limits.
How does the CONTROL pin affect RESET output behavior in the TLC7701IDRG4?
In the TLC7701IDRG4, the CONTROL pin determines RESET polarity: when CONTROL is tied to GND, RESET becomes active-high and RESET is inactive; when CONTROL is pulled high (≥0.7×VDD), RESET becomes active-low and RESET is inactive. This dual-mode capability allows direct interface with both legacy and modern microcontrollers without level-shifting circuitry.
Can the TLC7701IDRG4 be used to monitor multiple voltage rails simultaneously?
No - the TLC7701IDRG4 monitors only one rail via its SENSE pin. To supervise multiple rails (e.g., 3.3 V and 1.2 V), separate TLC7701IDRG4 units or a multi-channel supervisor like the TPS3808G12 must be used. Its internal architecture is dedicated to single-input threshold detection with hysteresis and delay timing.
What is the maximum recommended value for the external timing capacitor CT in the TLC7701IDRG4?
The TLC7701IDRG4 datasheet specifies CT values up to 10 µF for delay times exceeding 200 seconds, but practical design limits CT to ≤1 µF due to leakage current effects and capacitor dielectric absorption. For stable operation across –40°C to 125°C, X7R ceramic capacitors of 100 nF to 1 µF are recommended - avoiding electrolytics or high-leakage types that degrade td accuracy.
Is the TLC7701IDRG4 RoHS-compliant and lead-free?
Yes - the TLC7701IDRG4 is RoHS-compliant and features NiPdAu (NIPDAU) lead finish. Per TI's packaging addendum, it carries "Yes" in the RoHS column and "Level-1-260C-UNLIM" moisture sensitivity level, confirming full compliance with EU Directive 2011/65/EU and JEDEC J-STD-020 standards for lead-free reflow assembly.
TLC7701IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.1V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1.1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC7701IDRG4 FAQ
1.How can I place an order for TLC7701IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7701IDRG4 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 TLC7701IDRG4 reliable?
The price and inventory of TLC7701IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7701IDRG4 is usually 5 days.
3.What payment methods are accepted for TLC7701IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7701IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7701IDRG4?
TLC7701IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7701IDRG4 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 TLC7701IDRG4?
For technical support, including TLC7701IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7701IDRG4 requirements.
6.How does Aetrix verify that TLC7701IDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC7701IDRG4 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 TLC7701IDRG4 meets industry standards.
7.What is the process for return or replacement of TLC7701IDRG4?
All TLC7701IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7701IDRG4, 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 TLC7701IDRG4 part is unused and in its original packaging.
Return procedure for TLC7701IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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