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PDF TCM809TENB Data sheet ( Hoja de datos )
| Número de pieza | TCM809TENB | |
| Descripción | 3-PIN UP RESET MONITORS | |
| Fabricantes | TelCom Semiconductor | |
| Logotipo |  |
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1PRELIMINARY INFORMATION
TCM809
TCM810
3-PIN µP RESET MONITORS
FEATURES
s Precision VCC Monitor for 3.0V, 3.3V, 5.0V
Nominal System V Supplies
s 140msec Guaranteed Minimum RESET, RESET
Output Duration
s RESET Output Guaranteed to VCC = 1.0V (TCM809)
s Low 17µA Supply Current
s VCC Transient Immunity
s Small SOT-23B-3 Package
s No External Components
TYPICAL APPLICATIONS
s Computers
s Embedded Systems
s Battery Powered Equipment
s Critical µP Power Supply Monitoring
TYPICAL OPERATING CIRCUIT
VCC
VCC
RESET
TCM809
GND
VCC
PROCESSOR
RESET
INPUT
GND
PIN CONFIGURATION
*SOT-23B-3
GENERAL DESCRIPTION
2
The TCM809 and TCM810 are cost-effective system
supervisor circuits designed to monitor VCC in digital sys-
tems 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 VCC
falling through the reset voltage threshold. Reset is main-
tained 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
SOT-23B-3 package.
The TCM809/810 are optimized to reject fast transient
glitches on the VCC line. Low supply current of 17µA
(VCC = 3.3V) makes these devices suitable for battery
powered applications.
3
4
ORDERING INFORMATION
Part No.
Package
Temp. Range
TCM809xENB
SOT-23B-3
– 40°C to +85°C
TCM810xENB
SOT-23B-3
– 40°C to +85°C
NOTE: The "X" denotes a suffix for VCC threshold - see table below.
5
Suffix
L
M
T
S
R
Reset VCC Threshold (V)
4.63
4.38
3.08
2.93
2.63
6
GND 1
TCM809xENB 3 VCC
TCM810xENB
RESET (RESET) 2
NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236)
** () is for TCM810
TELCOM SEMICONDUCTOR, INC.
7
TCM809/810-04 8/29/96
5-15
8
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