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TC71 Scheda tecnica(PDF) 3 Page - TelCom Semiconductor, Inc

Il numero della parte TC71
Spiegazioni elettronici  MICROMASTER - SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP
Download  7 Pages
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Produttore elettronici  TELCOM [TelCom Semiconductor, Inc]
Homepage  http://www.telcom-semi.com
Logo TELCOM - TelCom Semiconductor, Inc

TC71 Scheda tecnica(HTML) 3 Page - TelCom Semiconductor, Inc

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5-9
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
ELECTRICAL CHARACTERISTICS: (Cont.)
DC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
IOUT1
VCCO Output Current
VCC = 4.5V, VCCO = 3.5V
50
100
mA
IOUT2
VCCO Output Current in
VCCO = VBATT – 0.3V
500
µA
Battery Backup Mode
VBATT = 2.8V
VSW
Battery Switchover Threshold
VBATT – 0.01
—V
(VCC Falling)
VHYST
Battery Switchover Hysteresis
20
mV
VOHCEO
CEO Output Voltage in
VCC < VBATT – 0.2, VBATT = 2.8V
VBATT – 0.2
V
Battery Backup Mode
IOH = 10µA
VTDI
Threshold Detector Trip Voltage
1.2
1.4
V
ITDI
Threshold Detector Input Current
TA = 25°C
–25
+25
nA
VTDI (HYST)
Threshold Detector Hysteresis
10
mV
ELECTRICAL CHARACTERISTICS:
AC: Power Supply Monitor, EXT. RESET and Watchdog: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise
specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tPBH
PB Hold Time
Figure 4 (Note 4)
20
msec
tRST
Reset Active Time
Figure 6
500
900
msec
tST
RS STROBE Pulsewidth
Figure 3
500
nsec
tTD
Watchdog Timeout Period
Figure 3
500
700
900
msec
tRPD
VCC Detect to RS LOW
Figure 6
100
nsec
ELECTRICAL CHARACTERISTICS:
AC: Battery Backup and Threshold Detector: TA = TMIN to TMAX, VCC = 4.5V to 5.5V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tPD
CE Propagational Delay
Figure 7
50
nsec
ELECTRICAL CHARACTERISTICS:
AC: TA = TMIN to TMAX.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
tF
VCC Fall Time From
Figure 5 (Note 1)
10
µsec
4.25V to 3.0V
tR
VCC Rise Time From
Figure 5 (Note 1)
0
µsec
3.0V to 4.25V
NOTES: 1. All voltages referenced to ground.
2. No output load.
3
Measured with VCCO and CEO open.
4. The RS output must be held low for a minimum of 20msec to guarantee a reset.
TC70/71
MICROMASTER™ – SYSTEM SUPERVISOR
WITH POWER SUPPLY MONITOR, WATCHDOG
AND BATTERY BACKUP


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