TCM809

Features:

· Precision VCC Monitor for 3.0V, 3.3V, 5.0V Nominal System V Supplies
· 140msec Guaranteed Minimum RESET, RESET Output Duration
· RESET Output Guaranteed to VCC = 1.0V (TCM809)
· Low 17mA Supply Current
· VCC Transient Immunity
·Small SOT-23B-3 Package
· Precision V_CC Monitor for 3.0V, 3.3V, 5.0V Nominal System V Supplies
· 140msec Guaranteed Minimum RESET , RESET Output Duration
· RESET Output Guaranteed to V_CC = 1.0V (TCM809)
· Low 17mA Supply Current
· V_CC Transient Immunity
· Small SOT-23B-3 Package
· No External Components
· No External Components




Application

`Computers
`Embedded Systems
`Battery Powered Equipment
`Critical P Power Supply Monitoring




Pinout






Specifications

Supply Voltage (V_CC to GND) .......................................... +6.0V
RESET, RESET ....................................... 0.3V to (V_CC + 0.3V)
Input Current, V_CC.. .........................................................20mA
Output Current, RESET, RESET .........................................20mA
dV/dt (V_CC) ................................................................. 100V/S
Operating Temperature Range .................. 40°C to +85°C
Power Dissipation (T_A 70°C)
SOT-23B-3 (derate 4mW/°C above +70°C) ................230mW
Storage Temperature Range ................... 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ....................... +260°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.

Parameter Name	Value
Manual Reset	No
Watchdog Timer	No
Typical Reset Pulse Width (ms)	140
Reset Type	Active Low
Typical Supply Current (uA)	12
Vcc Range Min (V)	1.0
Vcc Range Max (V)	5.5
Output	Push-Pull
Temp Range Min. (°C)	-40
Temp Range Max. (°C)	+85
Nominal Reset Voltage (V)	4.50, 4.25, 3.89, 3.00, 2.85, 2.55, 2.25

Parameter NameValueManual ResetNoWatchdog TimerNoTypical Reset Pulse Width (ms)140Reset TypeActive Low Typical Supply Current (uA)12Vcc Range Min (V)1.0Vcc Range Max (V)5.5OutputPush-PullTemp Range Min. (°C)-40Temp Range Max. (°C)+85Nominal Reset Voltage (V)4.50, 4.25, 3.89, 3.00, 2.85, 2.55, 2.25




Description

The TCM809 and TCM810 are cost-effective system supervisor circuits designed to monitor V_CC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.

The reset output is driven active within 20msec of V_CC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after V_CC rises above the reset threshold. The TCM810 has an active-high reset output while the TCM809 has an active-low reset output. The output of the TCM809 is guaranteed valid down to V_CC = 1V. Both devices are available in a SOT-23B-3 package.

The TCM809/810 are optimized to reject fast transient glitches on the V_CC line. Low supply current of 17mA (V_CC = 3.3V) makes these devices suitable for battery powered applications.

The TCM809 and TCM810 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 20 sec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The TCM810 has an active-high RESET output while the TCM809 has an active-low RESET output. The output of the TCM809 is guaranteed valid down to VCC = 1V. Both devices are available in a 3-Pin SOT-23B and 3-pin SC-70 package. The TCM809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 17A (VCC = 3.3V) makes these devices suitable for battery powered applications.