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Texas Instruments TL7715ACP
- Part No.:
- TL7715ACP
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TL7715ACP.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:625
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Product details
Overview
TL7715ACP from Texas Instruments is a precision supply-voltage supervisor IC designed for reset control in microprocessor systems operating at 15 V nominal supply. It features a fixed 13.5 V ±0.3 V undervoltage detection threshold (VIT−), 45 mV hysteresis, externally adjustable reset pulse duration via CT pin (e.g., 1.3 ms with 0.1 µF), and dual active-high/active-low open-collector RESET outputs. Used in analog circuits requiring stable 15 V rail supervision.
For engineers reviewing the TL7715ACP datasheet, TL7715ACP pinout, TL7715ACP application, or TL7715ACP equivalent, this page delivers verified electrical parameters, package-specific terminal functions, real-world timing behavior, and validated alternative options for 15 V system reset design.
Technical Context
The TL7715ACP implements a precision bandgap-referenced comparator with temperature-compensated voltage sensing at the SENSE input, triggering reset when VSENSE falls below 13.5 V. Its internal delay timer uses an external capacitor on CT to generate a programmable reset pulse width (td = 1.3 × 10⁴ × CT seconds).
It operates across 3.5 V to 18 V supply range, draws ≤3 mA quiescent current, and provides REF output (2.53 V typical) usable as a stable reference. Outputs are open-collector with ±16 mA drive capability, requiring external pull-ups for logic-level compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIT− Threshold | 13.5 V ±0.3 V - precise undervoltage trip point for 15 V systems |
| Hysteresis | 45 mV - prevents chatter during slow supply recovery |
| Supply Range | 3.5 V to 18 V - supports wide-input industrial/analog rails |
| REF Output | 2.53 V ±0.05 V - stable, temperature-compensated reference usable for external circuitry |
| Reset Pulse Width | 1.2 ms typical with 0.1 µF CT - ensures sufficient processor initialization time |
| Output Drive | ±16 mA - compatible with standard TTL/CMOS pull-up networks |
| Quiescent Current | 3 mA max - low power consumption during supervision |
Pinout & Package
TL7715ACP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with body size 9.81 mm × 6.35 mm. Pin numbering follows standard DIP convention (pin 1 top-left, pin 8 top-right when notch up).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF (1) | Voltage reference output | Provides 2.53 V ±0.05 V stable reference; requires 0.1 µF bypass to GND |
| RESIN (2) | Reset input | Active-low manual reset trigger; accepts logic-low pulse ≥0.4 µs |
| CT (3) | Timing capacitor connection | Sets reset pulse width: td ≈ 13,000 × CT (CT in farads) |
| GND (4) | Ground reference | Primary return path for all internal circuitry and external capacitors |
| RESET (5) | Inverted reset output | Open-collector active-low signal; sinks current when asserted |
| RESET (6) | Non-inverted reset output | Open-collector active-high signal; sources current when asserted |
| SENSE (7) | Supply monitoring input | Monitors external rail; triggers reset when voltage drops below 13.5 V |
| VCC (8) | Power supply input | Accepts 3.5–18 V; powers internal circuitry and enables REF/RESET functionality |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 13.5 V threshold | Enables reliable supervision of 15 V analog power rails without external resistor dividers |
| Externally adjustable reset timeout | CT pin allows precise tuning of reset pulse width (e.g., 0.65–2.6 ms with 0.1 µF) to match processor requirements |
| Temperature-compensated reference | REF output varies only ±16 mV over –40°C to +85°C, ensuring stable timing and sensing accuracy |
| Dual complementary reset outputs | Simultaneous active-high and active-low open-collector signals simplify interface to diverse microcontroller reset inputs |
| Wide supply operation | Functions correctly from 3.5 V to 18 V, supporting legacy and mixed-rail systems without level-shifting |
Applications
| Industrial Analog Power Monitoring | 15 V Microcontroller Reset Control |
|---|---|
|
Use Scenario: Supervising unregulated 15 V analog supply feeding op-amp rails and DACs in test equipment. IC Role / Device Role / Timing Role: Voltage supervisor detecting undervoltage on main analog rail; asserts RESET until rail recovers above 13.55 V. Use Value: Prevents erroneous analog output during brownout by holding downstream circuitry in reset until stable 15 V is confirmed. |
Use Scenario: Providing power-on and brownout reset for a 15 V-powered MSP430-based data logger. IC Role / Device Role / Timing Role: Generates 1.3 ms active-low RESET pulse after VCC reaches 3.6 V and SENSE exceeds 13.5 V. Use Value: Guarantees full MCU core and peripheral initialization before code execution begins. |
| Multi-Rail System Coordination | Legacy Industrial Controller Supervision |
|
Use Scenario: Coordinating startup sequence across 15 V analog, 5 V digital, and 3.3 V logic rails using discrete supervisors. IC Role / Device Role / Timing Role: TL7715ACP monitors 15 V rail; its RESET output enables enable pins on downstream DC/DC converters. Use Value: Ensures analog subsystem powers up and stabilizes before enabling sensitive digital loads. |
Use Scenario: Replacing aging discrete reset circuits in PLC I/O modules powered from 15 V bus. IC Role / Device Role / Timing Role: Single-chip replacement for R-C+transistor reset generator; provides tighter threshold tolerance and temperature stability. Use Value: Eliminates field failures due to drift in resistor/capacitor values over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supply-voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL7715ACD | SOIC-8 package (4.90 mm × 3.91 mm); identical electrical specs and pinout; RoHS-compliant, MSL-1 reflow rated | Preferred for surface-mount production; requires PCB layout revision for footprint and thermal relief | Select TL7715ACD for new SMT designs; TL7715ACP remains optimal for through-hole prototyping, repair, or legacy wave-solder assembly. |
| TPS3808G33 | Adjustable threshold (0.405–5.8 V via resistor divider); 3.3 V fixed option available; lower quiescent current (1.8 µA) | Requires external resistors to set 13.5 V trip; lacks REF output; not drop-in compatible | Choose TPS3808G33 only if ultra-low power or programmability outweighs need for pin-compatible simplicity and integrated reference. |
Compared with TL7715ACD, TL7715ACP offers identical supervision functionality in through-hole form for ease of hand-soldering and serviceability; versus TPS3808G33, it delivers fixed 13.5 V accuracy without calibration overhead but consumes higher quiescent current.
Availability
TL7715ACP is available at Aetrix Electronics and suitable for industrial automation, analog instrumentation, and legacy controller systems requiring stable component supply with long-term obsolescence management.
Supply support for TL7715ACP 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions since 1930.
The TL77xxA family was engineered specifically as cost-effective, precision supply-voltage supervisors for microcomputer and microprocessor reset control in industrial, computing, and analog systems.
FAQ
What is the exact undervoltage detection threshold of the TL7715ACP?
The TL7715ACP has a guaranteed negative-going input threshold voltage (VIT−) of 13.2 V to 13.8 V at 25°C, with a typical value of 13.5 V. This threshold is factory-trimmed and temperature-compensated, ensuring stable operation across the full 0°C to 70°C commercial temperature range specified for the TL7715ACP device variant.
Does the TL7715ACP require external components to function?
Yes, the TL7715ACP requires three external components for basic operation: a 0.1 µF capacitor between REF and GND to stabilize the internal reference, a timing capacitor (CT) between pin 3 and GND to set reset pulse width, and pull-up resistors on RESET (pin 6) and RESET (pin 5) outputs to establish valid logic levels for the target microcontroller or logic circuit.
Can the TL7715ACP monitor a voltage other than its own VCC supply?
Yes, the TL7715ACP monitors the voltage applied to its SENSE pin (pin 7), which may be independent of VCC. For example, it can supervise a 15 V analog rail while being powered from a separate 5 V logic supply connected to VCC (pin 8), provided VCC remains within 3.5 V–18 V and SENSE voltage stays within its 0–20 V absolute maximum rating.
What is the purpose of the REF pin on the TL7715ACP?
The REF pin (pin 1) provides a 2.53 V ±0.05 V temperature-compensated voltage reference output. This stable reference can be used externally-for example, to bias comparators, calibrate ADCs, or set thresholds in auxiliary circuits-eliminating the need for a separate reference IC in space-constrained designs utilizing the TL7715ACP.
Is the TL7715ACP pin-compatible with other TL77xxA family members?
Yes, all TL77xxA devices-including TL7702A, TL7705A, TL7709A, TL7712A, and TL7715ACP-share identical 8-pin SOIC and PDIP footprints and pin functions. The only functional difference is the factory-set VIT− threshold; substituting TL7715ACP for TL7712ACP changes the trip point from 10.8 V to 13.5 V, requiring verification that the monitored rail matches the new threshold.
TL7715ACP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 13.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1µs Maximum Propagation Delay
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TL7715ACP FAQ
1.How can I place an order for TL7715ACP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL7715ACP 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 TL7715ACP reliable?
The price and inventory of TL7715ACP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL7715ACP is usually 5 days.
3.What payment methods are accepted for TL7715ACP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL7715ACP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL7715ACP?
TL7715ACP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL7715ACP 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 TL7715ACP?
For technical support, including TL7715ACP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL7715ACP requirements.
6.How does Aetrix verify that TL7715ACP is sourced from the original manufacturer or authorized distributors?
All TL7715ACP 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 TL7715ACP meets industry standards.
7.What is the process for return or replacement of TL7715ACP?
All TL7715ACP units undergo pre-shipment inspection (PSI). If there is an issue with TL7715ACP, 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 TL7715ACP part is unused and in its original packaging.
Return procedure for TL7715ACP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL7715ACP Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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EM6325CXSP5B-2.9+
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MCP120T-315I/TT
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