TL7700CPE4 Texas Instruments Undefined or Miscellaneous (Dual-In-Line Packages) In Stock
TL7700CPE4 is an adjustable-threshold voltage supervisor and power-on reset generator in an 8-pin PDIP package. It monitors supply voltages from 1V to 18V and holds the reset signal asserted for a programmable delay after supply recovery.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TL7700CPE4 Datasheet PDF
- Category
- Undefined or Miscellaneous
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable reset threshold via external resistor divider monitors any supply from 1V to 18V
- Integrated power-on reset generator ensures microcontroller starts in a known state after power-up
- Programmable reset pulse width set by a single external capacitor for application-specific hold time
- 8-pin PDIP package enables straightforward through-hole prototyping and low-volume system integration
Applications
The TL7700CPE4 is used to supervise supply rails in microcontroller-based systems, asserting a reset signal whenever the supply voltage drops below the programmed threshold to prevent undefined firmware execution during brownout conditions. It is common in industrial control boards, power supply sequencing circuits, and legacy embedded systems where a 5V or 12V supply must be monitored with a delay-on-release reset lasting from 50ms to several seconds. Its adjustable threshold and programmable delay make it adaptable to a wide range of processor reset timing requirements.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | POWER ON RESET GENERATOR |
| Adjustable Threshold | YES |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 3mA |
| Supply Voltage-Max (Vsup) | 40V |
| Supply Voltage-Min (Vsup) | 1.8V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How is the reset threshold voltage configured in a TL7700CPE4 circuit?
The reset threshold is set by connecting an external resistor divider between the monitored supply and the sense input pin. Choosing resistor values that divide the supply down to the internal 1.15V reference level programs the exact trip point anywhere from 1V to 18V, without requiring any special calibration or programming equipment.
How long does the TL7700CPE4 hold the reset signal asserted after supply voltage recovers?
Reset pulse width is programmable via a single external capacitor on the delay pin. A 100nF capacitor produces approximately 50ms of reset hold time, while a 10µF capacitor extends it to several seconds, ensuring the microcontroller's internal oscillator, PLL, and peripherals are fully initialized before firmware begins executing.
In which brownout and power sequencing scenarios does the TL7700CPE4 outperform a simple RC reset circuit?
The TL7700CPE4 provides a precise and stable threshold comparison against an internal 1.15V reference, whereas an RC circuit drift of ±10% with temperature makes reliable brownout detection impossible. In 5V industrial control systems experiencing supply dips to 4V or less, the TL7700CPE4 accurately asserts reset within 1µs of threshold crossing, preventing corrupted EEPROM writes and watchdog faults that an RC network would miss.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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