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Name: TL7700CPS
Brand: Texas Instruments
SKU: TL7700CPS
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 TL7700CPS

Part No.:: TL7700CPS

Manufacturer:: Texas Instruments

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

Datasheet:: TL7700CPS.pdf

Description:: IC SUPERVISOR 1 CHANNEL 8SO

In Stock:: 3747

Quantity:: Add To Cart

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TL7700CPS Specifications

Packaging:
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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TL7700CPS information

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TL7700CPS Typical application Circuitry

The TL7700CPS is a supply voltage supervisor or reset integrated circuit (IC). Essentially, it provides a reset signal to a microprocessor or microcontroller when the supply voltage drops below a set threshold. This helps in ensuring proper boot-up conditions when power is applied or restored to a system.

Application Scenarios for the TL7700CPS:

1. Microprocessor/Microcontroller Systems

2. Digital Systems Requiring a Reset

3. Power Management for PCs and Motherboards

4. Battery-Powered Equipment

5. Industrial Control Systems Parameter

Features of the TL7700CPS:

1. Fixed and adjustable reset threshold voltages.

2. Low power consumption.

3. Open-collector reset output.

4. Defined reset output from VCC ≥ 1V.

5. Temperature-compensated voltage reference.

Let's explore the Microprocessor/Microcontroller Systems as an application scenario:

Circuit Connection for a Microprocessor System using TL7700CPS:

1. Powering the IC:

- Connect the VCC (Pin 8) to your system's power supply, which could range anywhere between 3V and 18V, based on your application. Connect the GND (Pin 4) to the system's ground.

2. Setting the Reset Threshold:

- The threshold at which the reset signal will activate can be set using an external resistor divider connected to the CT (Pin 6). The formula for this threshold voltage Vth is: Vth = 1.18V x times (1 + R1/R2), where R1 is the resistor between CT and GND and R2 is between CT and VCC.

3. Reset Output:

- The RESET (Pin 7) is an open-collector output. This indicates that an external pull-up resistor to VCC is required. This pin goes low when the VCC drops below the threshold set by the CT pin and remains low for a specific delay time after VCC goes back above the threshold.

4. Timing Capacitor:

- By electrically coupling a capacitor to the C (Pin 5), one can adjust the reset delay period. This determines how long the reset signal remains active after the voltage recovers.

Design Considerations:

1. Capacitor Type:

- Use a high-quality, low-leakage capacitor for the timing capacitor. This ensures consistent timing.

2. Output Consideration:

- The RESET output can sink current but not source it because it is an open-collector output. Use an external pull-up resistor hence at all times.

3. Input Voltage Levels:

- Ensure that the VCC is within the recommended range for the TL7700CPS to operate correctly.

4. Noise Consideration:

- For noisy environments, it's wise to connect a small ceramic capacitor (like 10nF) from the VCC pin to ground to filter out high-frequency noise.

5. Avoiding Unwanted Resets:

- The threshold set should be below the normal operating voltage but above the level where the microprocessor/microcontroller operates erratically.

In summation, the TL7700CPS offers a straightforward method to ensure that digital systems (like microprocessors) always start in a defined state, irrespective of how the input power is applied. Properly configuring this IC can prevent numerous system errors that might occur due to uncertain power-up conditions.

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6. What is the process for return or replacement of TL7700CPS?

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 TL7700CPS we delivered, we will accept the replacement or return of the TL7700CPS 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 TL7700CPS.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations