TC71

Lead Style :
Packaging : Bulk
Product : General Purpose Electrolytic Capacitors
Voltage Rating : 450 Volts
Operating Temperature Range : - 40 C to + 85 C
Termination Style : Axial
Tolerance : - 10 %, + 50 %
Capacitance : 8 uF
Dimensions : 19.05 mm Dia. x 28.58 mm L


Features:

Maximum Functional Integration: Precision Power Supply Monitor, Watchdog Timer, External RESET Override, Threshold Detector and Battery Backup Controller in an 8-Pin Package
Generates Power-on RESET and Guards Against Unstable Processor Operation Resulting from Power "Brown-out"
Automatically Halts and Restarts an Out-of- Control Microprocessor
Output Can be Wire-ORed, or Hooked to Manual RESET Pushbutton Switch
Watchdog Disable Pin for Easier Prototyping (TC70)
Voltage Monitor for Power Fail or Low Battery Warning (TC71)
Available in 8-Pin Plastic DIP or 8-Pin SOIC Packages
Cost Effective


Application

All Microprocessor-based Systems
Test Equipment
Instrumentation
 Set-Top Boxes


Pinout




Specifications

Voltage (Any Pin) with Respect to
Ground .......................................... GND  0.3 to VCC + 0.3V
Operating Temperature Range ...............  40°C to +85°C
Storage Temperature Range ................  65°C to +150°C
Lead Temperature (Soldering, 10 sec) .................... +300°C
*This is a stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational sections of
the specifications is not implied. Exposure to Absolute Maximum Rating
Conditions for extended periods may affect device reliability.

Description

The TC70/TC71 is a fully-integrated power supply monitor, watchdog and battery backup circuit in a space-saving
8-pin package.

When power is initially applied, the TC70/TC71 holds the processor in its reset state for a minimum of 500msec after VCC is in tolerance to ensure stable system start-up. After start-up, processor sanity is monitored by the on-board watchdog circuit. The processor must provide periodic highto- low level transitions to the TC70/TC71 to verify proper execution. Should the processor fail to supply this signal within the specified timeout period, an out-of-control processor is indicated and the TC70/TC71 issues a momentary processor reset as a result. The TC70 also features a watchdog disable pin to facilitate system test and debug.

The output of the TC70/TC71 can be wire-ORed to a pushbutton switch (or electronic signal) to reset the processor. When connected to a push-button switch, the TC70/71 provides contact debounce.

Parameters:

Technical/Catalog Information	TC71
Vendor	Cornell Dubilier Electronics (CDE)
Category	Capacitors
Capacitance	8.0F
ESR (Equivalent Series Resistance)	21.74 Ohm
Features	General Purpose
Lifetime @ Temp.	1000 Hrs @ 85°C
Maximum Temperature	-40°C ~ 85°C
Size / Dimension	0.750" Dia x 1.125" H (19.05mm x 28.58mm)
Lead Spacing	-
Surface Mount Land Size	-
Mounting Type	Through Hole
Package / Case	Axial
Packaging	Bulk
Tolerance	±20%
Voltage Rating	450V
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	TC71 TC71