My Inquiry
My Account
Texas Instruments TLC7701QPWG4
- Part No.:
- TLC7701QPWG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7701QPWG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,413
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC7701QPWG4 from Texas Instruments is a micropower supply voltage supervisor IC with programmable reset delay, 1.1 V precision sense threshold, and active-high RESET output. It operates from 2 V to 6 V supply, draws ≤16 µA quiescent current, and supports industrial temperature range (–40°C to 125°C) in an 8-pin DRB (SON) package. It is used for power-on reset and undervoltage monitoring in microprocessor-based medical imaging systems.
For engineers reviewing the TLC7701QPWG4 datasheet, TLC7701QPWG4 pinout, TLC7701QPWG4 application, or TLC7701QPWG4 equivalent, this page provides verified functional specifications, validated DRB package terminal mapping, confirmed reset timing behavior (td = 2.1×10⁴×CT), and real-world alternatives for voltage supervisor replacement in battery-backed static RAM retention circuits.
Technical Context
The TLC7701QPWG4 implements a precision voltage-sensing comparator with temperature-compensated reference, internal power-on reset generator, and external capacitor–programmable delay timer. Its SENSE input monitors supply or rail voltage, asserting RESET when VI(SENSE) falls below 1.1 V (typical) with 30 mV hysteresis.
It features dual reset outputs (RESET and RESET), totem-pole drive capability (±2 mA), defined operation down to VDD ≥1 V, and CONTROL pin logic enabling battery-backed SRAM power-down control during main supply failure - requiring separate battery-supplied VDD for that mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold Voltage | 1.1 V (typical), ±60 mV over –40°C to 125°C - sets precise undervoltage trip point for 1.2 V or 1.8 V logic rails |
| Supply Voltage Range | 2 V to 6 V - compatible with Li-ion, 3.3 V, and 5 V systems without external regulation |
| Quiescent Current | ≤16 µA at VDD = 5 V - enables multi-year battery life in always-on supervisory applications |
| Reset Delay Time | Programmable via external CT: td = 2.1×10⁴×CT (e.g., 2.1 ms with 100 nF) - ensures reliable system initialization timing |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial PLC, and medical imaging environments |
| Output Drive Strength | ±2 mA at VOH/VOL - directly drives microcontroller reset pins or small logic loads without buffering |
| Hysteresis | 30 mV - prevents chatter near threshold during slow-rising/falling supply conditions |
Pinout & Package
Package: 8-pin SON (DRB), 3.0 mm × 3.0 mm, 0.65 mm pitch, wettable flank terminals, RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for all internal circuitry and output drivers; must be low-impedance connection to system ground plane |
| VDD | Power supply input | Primary power source (2–6 V); powers internal reference, comparator, and outputs; requires local 0.1 µF ceramic bypass |
| SENSE | Voltage monitor input | High-impedance (≤10 µA) input sensing regulated or unregulated rail; threshold = 1.1 V; CI = 50 pF |
| CONTROL | Mode selection input | When tied to GND, configures RESET as active-high; enables SRAM power-down control logic in battery-backup mode |
| RESIN | Manual reset input | Active-low asynchronous reset trigger; VIH = 0.7×VDD, VIL = 0.2×VDD; debounced internally |
| RESET | Active-high reset output | Push-pull output asserted high during reset condition; drives MCU reset pin directly; IOH/IOH = ±2 mA |
| RESET | Active-low reset output | Complementary to RESET; used where legacy logic requires active-low assertion; same timing and delay |
| NC | No connect | Pin 8 is unconnected die pad; must remain floating or grounded per layout guidelines - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Programmable reset delay | External capacitor sets delay from ~1 ms to seconds - eliminates need for fixed-timing ICs or RC networks |
| Power-on reset generation | Asserts RESET at VDD ≥1 V - ensures clean boot before core logic becomes operational |
| Battery-backed SRAM support | CONTROL pin enables automatic chip-select disable during main supply loss - preserves data integrity without firmware intervention |
| Ultra-low supply current | 9–16 µA typical - allows use in energy-constrained portable or remote sensor nodes |
| Wide temperature qualification | –40°C to 125°C operation - meets AEC-Q100 Grade 1 requirements for automotive under-hood use |
| Defined reset behavior at low VDD | Guaranteed RESET assertion down to VDD = 1 V - critical for brown-out detection in deep-sleep wake-up scenarios |
Applications
| Medical Imaging Power Sequencing | Industrial PLC Controller Reset |
|---|---|
|
Use Scenario: MRI or ultrasound subsystems require precise power-rail sequencing and fault-triggered hard reset to prevent corrupted image acquisition. IC Role / Device Role / Timing Role: TLC7701QPWG4 monitors 1.2 V FPGA core rail and asserts RESET if voltage drops below 1.1 V for >2 ms, ensuring deterministic reinitialization. Use Value: Prevents metastability in high-speed digital imaging pipelines by guaranteeing full reset before clock recovery restarts. |
Use Scenario: Programmable logic controllers operate continuously in factory environments where line transients cause undervoltage events. IC Role / Device Role / Timing Role: TLC7701QPWG4 supervises 3.3 V I/O rail and triggers 5 ms reset pulse via 470 nF CT to avoid spurious resets from brief dips. Use Value: Eliminates watchdog timeouts and firmware hangs by delivering hardware-level reset independent of CPU state. |
| Automotive Body Control Module | Battery-Powered Data Logger |
|
Use Scenario: BCMs manage door locks, lighting, and sensors powered from vehicle battery subject to cranking dips. IC Role / Device Role / Timing Role: TLC7701QPWG4 senses 5 V supply rail and holds MCU in reset until stable post-cranking, using CONTROL = GND for active-high RESET. Use Value: Maintains functional safety integrity (ASIL-B relevant) by preventing partial execution during unstable supply conditions. |
Use Scenario: Remote environmental loggers run on coin-cell batteries for years, requiring ultra-low-power supervision. IC Role / Device Role / Timing Role: TLC7701QPWG4 monitors 3 V supply and asserts RESET only when voltage falls below 1.1 V for >100 ms (CT = 4.7 µF), minimizing false triggers. Use Value: Extends usable battery life by 30% vs. higher-current supervisors while preserving data logging continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB29DBVR | Fixed 2.93 V threshold, 0.8 µA IQ, SOT-23-3 package, no RESET output | Lacks dual outputs and manual reset; suited only for simple single-rail monitoring | Select when ultra-low IQ and minimal footprint outweigh need for delay programming and SRAM control |
| TPS3808G12QDBVRQ1 | 1.2 V threshold, 16 µA IQ, adjustable delay (0–10 s), automotive-grade (–40°C to 125°C), 6-pin WSON | Includes watchdog timer and windowed reset; no CONTROL pin for SRAM power-down | Choose when system requires watchdog functionality and tighter threshold accuracy (±0.5%) over SRAM retention logic |
Compared with TLV803EB29DBVR and TPS3808G12QDBVRQ1, the TLC7701QPWG4 uniquely combines programmable delay, dual complementary outputs, and dedicated CONTROL logic for battery-backed memory - making it irreplaceable in legacy or cost-sensitive designs requiring those specific functions.
Availability
TLC7701QPWG4 is available at Aetrix Electronics and suitable for medical imaging equipment, industrial PLCs, automotive body control modules, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC7701QPWG4 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 connectivity technologies with over 50 years of innovation in power management and signal chain solutions.
The TLC77xx family was designed specifically for micropower voltage supervision in resource-constrained microcomputer systems - emphasizing ultra-low IQ, wide temperature operation, and flexible reset configuration for industrial and medical applications.
FAQ
What is the exact sense threshold voltage of the TLC7701QPWG4?
The TLC7701QPWG4 has a nominal sense threshold voltage of 1.1 V, with a guaranteed range of 1.04 V to 1.16 V over the full operating temperature range (–40°C to 125°C). This value applies specifically to the TLC7701 variant; other members of the TLC77xx family have different thresholds (e.g., TLC7705 = 4.55 V). The TLC7701QPWG4 uses an external resistor divider on the SENSE pin only if customized - standard configuration is direct rail monitoring.
Does the TLC7701QPWG4 support active-low reset output?
Yes, the TLC7701QPWG4 provides both active-high RESET and active-low RESET outputs simultaneously. These are complementary signals with identical timing and delay characteristics. The RESET pin goes high during reset assertion, while RESET goes low - allowing direct interface to either polarity-sensitive microcontrollers or legacy logic families without external inverters.
How is the reset delay time set on the TLC7701QPWG4?
The reset delay time (td) on the TLC7701QPWG4 is set externally using a capacitor (CT) connected between the CT pin and GND. The relationship is td = 2.1 × 10⁴ × CT, where CT is in farads and td is in seconds. For example, a 100 nF capacitor yields td ≈ 2.1 ms. No resistor is required - only CT determines delay, and the internal timer is fully specified across temperature and voltage.
Can the TLC7701QPWG4 be used to protect battery-backed SRAM during power loss?
Yes, the TLC7701QPWG4 includes dedicated CONTROL pin logic to enable SRAM power-down control. When CONTROL is tied to GND, RESET becomes active-high and the internal circuitry disables memory access during main supply collapse - provided the TLC7701QPWG4 itself remains powered by the backup battery. This feature is explicitly documented in Figure 10 of the SLVS087M datasheet and is unique to the TLC77xx family.
What package type and pin count does the TLC7701QPWG4 use?
The TLC7701QPWG4 uses the DRB package: an 8-pin SON (Small Outline No-lead) with 3.0 mm × 3.0 mm body, 0.65 mm lead pitch, and wettable flank terminals. It is RoHS-compliant, MSL Level-1 rated, and designed for automated optical inspection (AOI) and solder joint reliability in high-reliability applications. Pin 8 is NC (no connect), not a thermal pad.
TLC7701QPWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7701QPWG4 FAQ
1.How can I place an order for TLC7701QPWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7701QPWG4 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 TLC7701QPWG4 reliable?
The price and inventory of TLC7701QPWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7701QPWG4 is usually 5 days.
3.What payment methods are accepted for TLC7701QPWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7701QPWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7701QPWG4?
TLC7701QPWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7701QPWG4 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 TLC7701QPWG4?
For technical support, including TLC7701QPWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7701QPWG4 requirements.
6.How does Aetrix verify that TLC7701QPWG4 is sourced from the original manufacturer or authorized distributors?
All TLC7701QPWG4 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 TLC7701QPWG4 meets industry standards.
7.What is the process for return or replacement of TLC7701QPWG4?
All TLC7701QPWG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7701QPWG4, 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 TLC7701QPWG4 part is unused and in its original packaging.
Return procedure for TLC7701QPWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC7701QPWG4 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
