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Name: TL7700CPSR
Brand: Texas Instruments
SKU: TL7700CPSR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments TL7700CPSR

Part No.:: TL7700CPSR

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.209, 5.30mm Width)

Datasheet:: TL7700CPSR.pdf

Description:: IC SUPERVISOR 1 CHANNEL 8SO

In Stock:: 2930

Quantity:: Add To Cart

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TL7700CPSR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®,Bulk
Series:
-
ProductStatus:
Active
Type:
Simple Reset/Power-On Reset
NumberofVoltagesMonitored:
1
Voltage-Threshold:
Adjustable/Selectable
Output:
Open Drain or Open Collector
Reset:
Active Low
ResetTimeout:
10µs Maximum Propagation Delay
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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TL7700CPSR information

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TL7700CPSR Typical application Circuitry

TL7700CPSR is essentially an enhanced or specific version/package of the TL7700 series, designed for supply voltage supervision. Its primary function is to reset a microprocessor or another digital system when a predefined threshold voltage is crossed, ensuring correct system startup and operation during uncertain power conditions.

Application Scenarios for TL7700CPSR:

1. Microcontroller-Based Applications

2. Embedded Systems

3. Critical Digital System Monitoring

4. Portable Electronics

5. Power Management in PCs

Parameter Features of the TL7700CPSR:

1. Precision supply voltage monitoring.

2. Low supply current drain.

3. Open-drain reset output.

4. Temperature-compensated internal voltage reference.

5. Defined reset output from VCC ≥ 1V.

For this discussion, let's delve into Embedded Systems as our chosen application scenario:

Circuit Connection for Embedded Systems using TL7700CPSR:

1. Powering the IC:

- Attach VCC (typically Pin 8) to your system's power supply. This could be a value between 3V to 18V, contingent upon the specifics of your setup. Ground (often Pin 4) is connected to your system's ground.

2. Defining the Reset Threshold:

- The threshold voltage, which initiates the reset signal, can be customized using an external resistor pair connected to the CT pin. The mathematical formula for determining the threshold voltage Vth is typically:
Vth = Vrefxtimes (1 + R1/R2). Here, R1 is placed between CT and GND, while R2 spans between CT and VCC.

3. Reset Signal Output:

- The RESET pin, often Pin 7, operates as an open-drain output. An external pull-up resistor to VCC is necessary. When VCC descends below the previously set threshold, this pin becomes low, sustaining this state for a specified time even after VCC exceeds the threshold.

4. Timing Capacitor:

- To define the duration of the reset signal after voltage reclamation, connect a capacitor to the 'C' pin (commonly Pin 5).

Design Considerations:

1. Capacitor Choice:

- Opt for a capacitor with low leakage to ensure consistent timing.

2. Resistor Selection:

- For the pull-up resistor on the RESET pin, choose a value that doesn't draw excessive current but still pulls the voltage up swiftly.

3. Beware of Noise:

- To counter high-frequency noise, consider integrating a ceramic capacitor between the VCC pin and the ground.

4. Avert Accidental Resets:

- Strike a balance when setting the threshold. It should reside below operational voltage but remain above any erratic operational voltage levels.

In summary, the TL7700CPSR is a crucial component for maintaining the robustness and reliability of digital systems, especially in environments with unpredictable power sources. When utilized effectively, this IC can greatly enhance the performance and safety of digital systems by assuring that they always start from a known state.

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6. What is the process for return or replacement of TL7700CPSR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the TL7700CPSR we delivered, we will accept the replacement or return of the TL7700CPSR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of TL7700CPSR.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations