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Texas Instruments TLC7701MPWREPG4
- Part No.:
- TLC7701MPWREPG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7701MPWREPG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,146
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Product details
Overview
TLC7701MPWREPG4 from Texas Instruments is a micropower supply voltage supervisor IC designed for precision power-on reset and undervoltage monitoring in high-reliability embedded systems. It features a programmable delay time (via external capacitor), 1.1 V precision reset threshold, 30 mV hysteresis, and operates across –55°C to 125°C. Used in aerospace-grade microcomputer systems requiring battery-backed static RAM power-down control.
For engineers reviewing the TLC7701MPWREPG4 datasheet, TLC7701MPWREPG4 pinout, TLC7701MPWREPG4 application, or TLC7701MPWREPG4 equivalent, key selection criteria include its extended temperature range (–55°C to 125°C), dual active-high/active-low RESET outputs, totem-pole output drive (no pull-up required), and support for static RAM data retention during brownout.
Technical Context
The TLC7701MPWREPG4 implements a precision voltage-sensing comparator with temperature-compensated internal reference and an internal timer for configurable reset delay. Its SENSE input monitors system supply or rail voltage against a fixed 1.1 V threshold (VIT− = 1.1 V, Vhys = 30 mV), while CONTROL and RESIN inputs enable flexible reset assertion logic per the functional table.
Unlike fixed-threshold variants (TLC7705/TLC7733), the TLC7701MPWREPG4 supports external resistor programming of its sense threshold via R1/R2 connections - though nominal configuration uses R1 = 0 Ω and R2 = ∞ (open), yielding the standard 1.1 V trip point. Delay time (td) is externally set by CT: td = 2.1 × 10⁴ × CT (seconds).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports wide-input industrial and aerospace rails without external regulation |
| Reset Threshold Voltage | 1.04 V to 1.16 V (typ 1.1 V) - precise power-on detection at low VDD ≥1 V |
| Hysteresis | 30 mV - prevents chatter during slow-rising or noisy supply transitions |
| Supply Current | 9 µA to 18 µA (typ 16 µA) - enables multi-year battery operation in always-on monitoring |
| Delay Time Range | Configurable via CT (e.g., 100 nF → ~2.1 ms) - ensures reliable system initialization timing |
| Operating Temperature | –55°C to 125°C - qualified for extended military/aerospace environmental stress |
| Output Type | Totem-pole RESET and RESET - eliminates need for external pull-up resistors, reduces BOM count |
Pinout & Package
TSSOP-8 (PW) package, 3.0 mm × 4.4 mm, 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESIN | Reset Input Enable | Active-low manual reset override; forces RESET active when pulled low |
| 2 - CONTROL | Power-Down Control Select | Drives RESET polarity: tied to GND → active-high RESET for RAM chip-select control |
| 3 - SENSE | Voltage Monitor Input | Monitors regulated supply or critical rail; asserts reset if below 1.1 V threshold |
| 4 - CT | Delay Timing Capacitor | Connects external capacitor to set reset timeout duration (td = 2.1×10⁴ × CT) |
| 5 - GND | Ground Reference | Analog/digital common return; must be low-impedance for stable threshold accuracy |
| 6 - VDD | Supply Input | Primary power source (2–6 V); powers internal reference, comparator, and outputs |
| 7 - RESET | Active-Low Reset Output | Open-drain compatible totem-pole output; drives microcontroller /RESET pin directly |
| 8 - RESET | Active-High Reset Output | Complementary topin 7; used for logic-level interface or RAM CS control without inversion |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Reset Delay | External capacitor (CT) sets delay from microseconds to seconds - enables timing alignment with FPGA configuration or memory initialization |
| Dual Active Outputs | Simultaneous RESET (active-low) and RESET (active-high) - eliminates need for external inverters in mixed-logic systems |
| Battery-Backed RAM Support | CONTROL pin configures power-fail response to disable RAM chip-select - preserves volatile data during main supply loss |
| Extended Temperature Range | –55°C to 125°C operation with full parameter guarantee - meets MIL-PRF-38535 Class K requirements |
| Low Supply Current | ≤18 µA max IDD - enables continuous monitoring in energy-constrained avionics subsystems |
Applications
| Aerospace Flight Control Unit | Defense Radar Signal Processor |
|---|---|
Use Scenario: Monitors 3.3 V FPGA core supply during cold-start and in-flight brownout events. IC Role / Device Role / Timing Role: Power-on reset generator and undervoltage supervisor ensuring deterministic FPGA configuration sequence. Use Value: Prevents metastability and configuration corruption by holding /PROG_B until VCCINT stabilizes above 1.1 V with 30 mV hysteresis. | Use Scenario: Supervises 5 V analog front-end supply in phased-array radar receiver modules. IC Role / Device Role / Timing Role: Dual-output reset controller interfacing with TI C66x DSP and SRAM bank select logic. Use Value: Uses CONTROL = GND to assert active-high RESET to SRAM CS, disabling memory access within 2.1 ms of supply dip. |
| Medical Imaging Power Management | Satellite Onboard Computer |
Use Scenario: Ensures safe boot sequencing for X-ray detector ASICs powered from isolated DC/DC converters. IC Role / Device Role / Timing Role: Precision voltage monitor with programmable delay for synchronized reset of analog and digital subsystems. Use Value: CT = 100 nF yields 2.1 ms delay - matches ASIC internal POR timing, eliminating race conditions. | Use Scenario: Provides radiation-tolerant reset supervision for LEON3-based OBC using battery-backed SRAM. IC Role / Device Role / Timing Role: Extended-temperature supervisor with totem-pole outputs driving FPGA /RST and SRAM /CS simultaneously. Use Value: Eliminates external pull-ups and level shifters - reduces single-point failure risk in high-reliability space applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7701QPWREP | Same functionality, but rated for –40°C to 125°C (not –55°C) | Lacks extended cold-temperature qualification for space or arctic deployment | Select TLC7701MPWREP when operation below –40°C is required |
| TPS3839G33DBVR | Fixed 3.3 V threshold, 350 ms factory-programmed delay, lower quiescent current (350 nA) | No external delay capacitor or threshold adjustment; no dual RESET outputs | Choose TPS3839G33DBVR only for cost-sensitive commercial designs needing fixed 3.3 V supervision |
Compared with TLC7701QPWREP and TPS3839G33DBVR, the TLC7701MPWREPG4 uniquely delivers –55°C operation, user-configurable delay, and dual active-reset outputs - making it the sole option for mission-critical aerospace systems requiring full temperature coverage and design flexibility.
Availability
TLC7701MPWREPG4 is available at Aetrix Electronics and suitable for aerospace flight control units, defense radar signal processors, and medical imaging power management systems requiring stable component supply under extended temperature and long-lifecycle constraints.
Supply support for TLC7701MPWREPG4 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, and aerospace markets.
The TLC77xx-EP product line was engineered specifically for defense, aerospace, and medical applications - delivering controlled-baseline manufacturing, extended temperature operation, and enhanced product lifecycle traceability.
FAQ
What is the guaranteed operating temperature range for TLC7701MPWREPG4?
The TLC7701MPWREPG4 is fully specified and tested over –55°C to 125°C. This extended temperature range is validated per MIL-PRF-38535 Class K requirements and supports deployment in space, high-altitude avionics, and downhole oilfield equipment where extreme thermal cycling occurs. All electrical parameters in the datasheet apply across this full range.
How does the CONTROL pin affect reset behavior in TLC7701MPWREPG4?
When CONTROL is tied to GND, TLC7701MPWREPG4 configures RESET as active-high - enabling direct connection to static RAM chip-select (CS) pins for automatic data retention during power failure. When CONTROL is high, RESET reverts to active-low. This dual-mode capability is unique to the TLC7701MPWREPG4 and is documented in Table 1 (Function Table) of the datasheet.
Can TLC7701MPWREPG4 monitor voltages other than VDD?
Yes - the SENSE pin is independent of VDD and can monitor any DC voltage between 0 V and VDD. It is commonly used to supervise secondary rails (e.g., 1.8 V, 2.5 V, 3.3 V) or battery voltage. The internal 1.1 V threshold remains fixed; for non-1.1 V rails, external resistor dividers are required - though the TLC7701MPWREPG4's R1/R2 pins allow direct threshold adjustment without external components.
What is the maximum recommended value for the timing capacitor CT on the TLC7701MPWREPG4 CT pin?
The datasheet specifies CT values up to 10 µF for reliable operation. At CT = 10 µF, the delay time reaches ~210 seconds. Larger capacitors increase leakage-related timing error and reduce accuracy over temperature. For delays >1 s, TI recommends verifying stability with actual board-level testing due to parasitic effects and capacitor dielectric absorption.
Does TLC7701MPWREPG4 require external pull-up resistors on its RESET outputs?
No - TLC7701MPWREPG4 features totem-pole (push-pull) outputs on both RESET and RESET pins. These outputs actively drive high and low without external components, reducing BOM count and PCB area. This differs from open-drain supervisors and eliminates timing uncertainty caused by RC rise times from pull-up resistors.
TLC7701MPWREPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7701MPWREPG4 FAQ
1.How can I place an order for TLC7701MPWREPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7701MPWREPG4 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 TLC7701MPWREPG4 reliable?
The price and inventory of TLC7701MPWREPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7701MPWREPG4 is usually 5 days.
3.What payment methods are accepted for TLC7701MPWREPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7701MPWREPG4 transactions.
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4.How is shipping managed for TLC7701MPWREPG4?
TLC7701MPWREPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7701MPWREPG4 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 TLC7701MPWREPG4?
For technical support, including TLC7701MPWREPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7701MPWREPG4 requirements.
6.How does Aetrix verify that TLC7701MPWREPG4 is sourced from the original manufacturer or authorized distributors?
All TLC7701MPWREPG4 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 TLC7701MPWREPG4 meets industry standards.
7.What is the process for return or replacement of TLC7701MPWREPG4?
All TLC7701MPWREPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7701MPWREPG4, 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 TLC7701MPWREPG4 part is unused and in its original packaging.
Return procedure for TLC7701MPWREPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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