My Inquiry
My Account
Texas Instruments TL7759CPSR
- Part No.:
- TL7759CPSR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TL7759CPSR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL7759CPSR from Texas Instruments is a supply-voltage supervisor IC designed for power-on reset generation and undervoltage detection in microcontroller-based systems. It features a precision 4.55 V ±120 mV input threshold, true/complementary reset outputs (RESET and RESET), low 20 µA standby current, wide 1 V to 7 V supply range, and guaranteed reset assertion when VCC exceeds 1 V - enabling reliable system initialization in embedded instrumentation and industrial control applications.
For engineers reviewing the TL7759CPSR datasheet, TL7759CPSR pinout, TL7759CPSR application, or TL7759CPSR equivalent, key selection criteria include its fixed 4.55 V threshold accuracy, dual active-high/active-low reset outputs, hysteresis of 30–70 mV, propagation delay ≤5 µs, and SO (PS) 8-pin surface-mount package compatibility with automated assembly.
Technical Context
The TL7759CPSR integrates a precision voltage reference, comparator with hysteresis, and dual open-collector/open-drain output drivers. Its internal circuitry monitors VCC continuously and asserts RESET (high) and RESET (low) simultaneously upon power-up or voltage drop below VIT– (4.4 V min), maintaining defined logic states down to 1 V supply.
It operates across 0°C to 70°C ambient temperature, supports 24 mA sink capability on RESET and –8 mA source on RESET, and delivers stable reset timing with tPLH/tPHL ≤5 µs under 5 V/µs slew rate conditions - ensuring deterministic behavior during fast-rising or noisy supply transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Threshold Voltage | 4.55 V ±120 mV - ensures accurate 5 V system reset at nominal rail; negative-going VIT– = 4.4 V min guarantees robust brownout detection. |
| Supply Voltage Range | 1 V to 7 V - enables operation across battery-backed, 3.3 V, and 5 V systems without external regulation. |
| Standby Current | 20 µA - minimizes quiescent power in always-on monitoring circuits, critical for energy-constrained edge nodes. |
| Reset Propagation Delay | ≤5 µs - provides fast, predictable response to supply transients, preventing CPU lockup during marginal voltage events. |
| Hysteresis | 30–70 mV - prevents chatter near threshold by separating VIT+ and VIT–, improving noise immunity in electrically noisy environments. |
| Output Drive Capability | RESET sinks 24 mA; RESET sources –8 mA - supports direct interface to TTL/CMOS inputs and pull-up resistors up to 10 kΩ. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems including HVAC controllers and programmable logic modules. |
Pinout & Package
TL7759CPSR is housed in an 8-pin Small Outline (SO) package with PS drawing - 5.3 mm width, 6.2 mm length, 1.75 mm max height, and gull-wing leads compatible with standard reflow profiles (MSL Level-1). Pin 1 orientation follows quadrant Q1 tape feed direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - powers internal reference and comparators; functional down to 1 V. |
| 2 | NC | No internal connection - must be left unconnected; not used for thermal or electrical purposes. |
| 3 | NC | No internal connection - floating pad; no routing or grounding required. |
| 4 | GND | Ground reference - return path for all internal circuitry and output drivers; must connect to system ground plane. |
| 5 | RESET | Active-high open-collector reset output - pulled high externally; asserts high during undervoltage or power-up. |
| 6 | RESET | Active-low open-collector reset output - pulled high externally; asserts low during undervoltage or power-up. |
| 7 | NC | No internal connection - unused terminal; no signal or decoupling function. |
| 8 | NC | No internal connection - isolated from die; no PCB trace or thermal pad needed. |
Key Features
| Feature | Design Value |
|---|---|
| True and complementary reset outputs | Simultaneous RESET (active-high) and RESET (active-low) eliminate need for external inverters in dual-signaling systems. |
| Reset defined below 1 V supply | Guaranteed output state integrity even during deep brownout or battery depletion - prevents undefined MCU behavior. |
| Precision 4.55 V threshold with tight tolerance | ±120 mV spec ensures consistent reset point across production lots, reducing calibration overhead in volume manufacturing. |
| Low 20 µA standby current | Enables continuous monitoring in battery-powered devices with multi-year shelf life before first use. |
| Wide 1 V to 7 V operating range | Supports direct integration into mixed-voltage systems (e.g., 3.3 V logic + 5 V analog rails) without level-shifting. |
Applications
| Industrial PLC I/O Modules | Smart Energy Meters |
|---|---|
Use Scenario: Power cycling during grid fluctuations or firmware updates in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Supervises 5 V system rail and generates synchronized active-high and active-low reset pulses to initialize FPGA, MCU, and ADC subsystems. Use Value: Prevents partial initialization and latch-up by holding all logic in known state until VCC stabilizes above 4.4 V with 50 mV hysteresis. |
Use Scenario: Cold-start after battery replacement or long-term storage in utility-grade metering hardware. IC Role / Device Role / Timing Role: Monitors backup lithium coin-cell supply (3 V) and main 5 V DC-DC output to assert reset only when both are valid. Use Value: Ensures metrology ASIC and real-time clock initialize coherently, eliminating time-slip or register corruption on first boot. |
| Medical Diagnostic Handhelds | Automotive Body Control Modules |
Use Scenario: Rapid on/off cycling during clinical workflow where battery voltage sags under load. IC Role / Device Role / Timing Role: Detects transient <4.4 V dips on 3.3 V LDO output feeding ARM Cortex-M4 core and sensor interface. Use Value: Triggers clean hardware reset within 5 µs, avoiding software hangs that could delay critical patient data acquisition. |
Use Scenario: Ignition sequence where 12 V battery drops to ~6 V during cranking before alternator stabilizes. IC Role / Device Role / Timing Role: Supervises post-regulation 5 V rail feeding CAN transceiver and microcontroller; asserts reset until rail recovers to >4.55 V. Use Value: Eliminates CAN bus arbitration errors and EEPROM write corruption caused by marginal supply during engine start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supply-voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Adjustable threshold (via external resistor); 3.3 V fixed option; 1.8 µA quiescent current; requires external capacitor for delay. | Used where programmable reset delay or multiple rail supervision is needed; lacks complementary outputs. | Select when ultra-low power or configurable timing outweighs need for dual reset polarity. |
| MAX809SEUR+T | Fixed 3.08 V threshold; single active-low reset output; 12 µA quiescent current; SOT-23-3 package. | Suitable for space-constrained 3.3 V systems requiring minimal BOM count; no true/complementary pair. | Choose for cost-sensitive, single-rail 3.3 V designs where board area is premium and dual outputs unnecessary. |
Compared with TL7759CPSR, TPS3808G33DBVR offers lower power and flexibility but requires external components and lacks native complementary outputs, while MAX809SEUR+T saves board space and cost in 3.3 V-only applications but cannot supervise 5 V rails or provide simultaneous high/low reset signals.
Availability
TL7759CPSR is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical diagnostics requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for TL7759CPSR 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 digital signal technologies, with over 90 years of innovation in industrial, automotive, and communications markets.
The TL77xx series was developed specifically for reliable power-supply monitoring in microcontroller-based systems, emphasizing precision threshold accuracy, dual-output flexibility, and robust operation across commercial temperature ranges.
FAQ
What is the exact input voltage threshold specification for TL7759CPSR?
The TL7759CPSR has a nominal input threshold voltage of 4.55 V with a tolerance of ±120 mV, meaning the actual trip point falls between 4.43 V and 4.67 V at 25°C. Over the full operating temperature range (0°C to 70°C), the negative-going threshold (VIT–) is specified from 4.4 V to 4.7 V - this is the voltage below which the device asserts reset. This precision enables accurate supervision of standard 5 V power rails without external calibration.
Does TL7759CPSR provide both active-high and active-low reset outputs simultaneously?
Yes, TL7759CPSR provides true and complementary reset outputs: RESET is active-high (open-collector), and RESET is active-low (open-collector). Both outputs change state concurrently during power-up or undervoltage events, allowing direct interface to systems requiring either polarity - such as microcontrollers with dedicated active-low reset pins and FPGAs needing active-high initialization signals - without external logic inversion.
What package type and lead finish does TL7759CPSR use?
TL7759CPSR uses an 8-pin Small Outline (SO) package with PS drawing - measuring 5.3 mm × 6.2 mm × 1.75 mm max height - and features NiPdAu (NIPDAU) lead finish. It is supplied in tape-and-reel format (2000 units per reel), rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), and compliant with JEDEC MO-153 standards for surface-mount assembly.
Can TL7759CPSR operate reliably at supply voltages below 2 V?
Yes, TL7759CPSR is fully specified to operate down to 1 V supply voltage. Its reset outputs remain defined and functional even when VCC is as low as 1 V, and the device begins asserting reset as soon as VCC rises above this level during power-up. This capability supports brownout detection in partially discharged battery systems and ensures deterministic behavior during deep supply sag events.
What is the maximum output sink current supported by the RESET pin of TL7759CPSR?
The RESET pin of TL7759CPSR supports a maximum low-level output current (IOL) of 24 mA at VCC = 4.3 V and VOL ≤ 0.8 V. This allows direct driving of standard TTL/CMOS inputs and compatibility with common pull-up resistor values (e.g., 10 kΩ to 5 V yields ~0.5 mA load), making it suitable for interfacing with legacy microcontrollers and programmable logic devices without additional buffer circuitry.
TL7759CPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.55V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 5µs Maximum Propagation Delay
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TL7759CPSR FAQ
1.How can I place an order for TL7759CPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL7759CPSR 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 TL7759CPSR reliable?
The price and inventory of TL7759CPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL7759CPSR is usually 5 days.
3.What payment methods are accepted for TL7759CPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL7759CPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL7759CPSR?
TL7759CPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL7759CPSR 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 TL7759CPSR?
For technical support, including TL7759CPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL7759CPSR requirements.
6.How does Aetrix verify that TL7759CPSR is sourced from the original manufacturer or authorized distributors?
All TL7759CPSR 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 TL7759CPSR meets industry standards.
7.What is the process for return or replacement of TL7759CPSR?
All TL7759CPSR units undergo pre-shipment inspection (PSI). If there is an issue with TL7759CPSR, 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 TL7759CPSR part is unused and in its original packaging.
Return procedure for TL7759CPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL7759CPSR 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…
