TL7705ACDR
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Texas Instruments TL7705ACDR

Manufacturer No:
TL7705ACDR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC SUPERVISOR 1 CHANNEL 8SOIC
Delivery:
Payment:
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Product Introduction

Overview

The TL7705ACDR, produced by Texas Instruments, is a supply-voltage supervisor integrated circuit designed for use as a reset controller in microcomputer systems. This device is part of the TL77xxA family and is specifically tailored for applications requiring a 5-volt supply, such as TTL systems and microcomputer systems like the TMS7000.

During power-up, the RESET output becomes active when the VCC voltage approaches 3.6 V, and after a programmable delay, the outputs become inactive. The device also monitors for undervoltage conditions during normal operation and activates the RESET outputs accordingly.

Key Specifications

Parameter Min Typ Max Unit
Threshold Voltage (Vt) 4.55 V
Output Pulse Duration (CT = 0.1 µF) 0.65 1.2 2.6 msec
Input Pulse Duration at RESIN 0.4 µs
Propagation Delay Time (RESIN to RESET) 1 µs
Rise Time (RESET) 0.2 µs
Fall Time (RESET) 0.2 3.5 µs
Operating Temperature Range -40 85 °C
Package Types SOIC (8), PDIP (8), SO (8)

Key Features

  • Programmable delay time using an external capacitor.
  • Active low RESET and RESET outputs.
  • Threshold voltage of 4.55 V, suitable for 5-volt supply systems.
  • Automatic reset when the supply voltage falls below the threshold.
  • Protection against fast transients in the supply voltage through an external capacitor connected to REF.
  • Multiple package options: SOIC (8), PDIP (8), and SO (8).

Applications

  • TTL systems and microcomputer systems requiring a 5-volt supply, such as the TMS7000.
  • Microprocessor and memory circuits where reliable power-on reset is essential.
  • Analog circuits that operate with a 5-volt supply voltage.
  • Any system requiring automatic reset upon undervoltage conditions.

Q & A

  1. What is the primary function of the TL7705ACDR?

    The primary function of the TL7705ACDR is to act as a supply-voltage supervisor and reset controller in microcomputer systems.

  2. What is the threshold voltage for the TL7705ACDR?

    The threshold voltage for the TL7705ACDR is 4.55 V.

  3. How is the delay time programmed in the TL7705ACDR?

    The delay time is programmed using an external capacitor connected to the REF pin.

  4. What happens when the supply voltage falls below the threshold voltage?

    When the supply voltage falls below the threshold voltage, the RESET outputs become active.

  5. What types of packages are available for the TL7705ACDR?

    The TL7705ACDR is available in SOIC (8), PDIP (8), and SO (8) packages.

  6. How does the device protect against fast transients in the supply voltage?

    The device protects against fast transients by using an external capacitor connected to the REF pin.

  7. What is the operating temperature range for the TL7705ACDR?

    The operating temperature range for the TL7705ACDR is -40°C to 85°C.

  8. Can the TL7705ACDR be used in analog circuits?

    Yes, the TL7705ACDR can be used in analog circuits that operate with a 5-volt supply voltage.

  9. What are the typical applications of the TL7705ACDR?

    Typical applications include TTL systems, microcomputer systems, and any system requiring automatic reset upon undervoltage conditions.

  10. How do the RESET outputs behave during power-up and power-down?

    During power-up, the RESET outputs become active when VCC approaches 3.6 V and remain active for a programmable delay. During power-down, the outputs remain active until VCC falls below 2 V.

Product Attributes

Type:Simple Reset/Power-On Reset
Number of Voltages Monitored:1
Voltage - Threshold:4.55V
Output:Complementary
Reset:Active High/Active Low
Reset Timeout:1µs Maximum Propagation Delay
Operating Temperature:0°C ~ 70°C (TA)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number TL7705ACDR TL7705AIDR TL7705BCDR TL7709ACDR TL7702ACDR TL7705ACD
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active
Type Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset
Number of Voltages Monitored 1 1 1 1 1 1
Voltage - Threshold 4.55V 4.55V 4.55V 7.6V 2.53V 4.55V
Output Complementary Complementary Complementary Complementary Complementary Complementary
Reset Active High/Active Low Active High/Active Low Active High/Active Low Active High/Active Low Active High/Active Low Active High/Active Low
Reset Timeout 1µs Maximum Propagation Delay 1µs Maximum Propagation Delay 270ns Typical Propagation Delay 1µs Maximum Propagation Delay 1µs Maximum Propagation Delay 1µs Maximum Propagation Delay
Operating Temperature 0°C ~ 70°C (TA) -40°C ~ 85°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC 8-SOIC

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