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TPS3123J12 Datasheet(PDF) 2 Page - Texas Instruments

No. de pieza TPS3123J12
Descripción Electrónicos  ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS3123J12 Datasheet(HTML) 2 Page - Texas Instruments

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TPS3123J12, TPS3123G15, TPS3123J18, TPS3124J12, TPS3124G15
TPS3124J18, TPS3125J12, TPS3125G15, TPS3125J18, TPS3125L30
ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS
SLVS227 – AUGUST 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. No
external components are required. All the devices of this family have a fixed-sense threshold voltage VIT set
by an internal voltage divider.
The TPS3123-xx and TPS3125-xx devices incorporate a manual reset input, MR. A low level at MR causes
RESET to become active. The TPS3124-xx devices do not have the input MR, but include a high-level output
RESET same as the TPS3125-xx devices. In addition the TPS3123-xx and TPS3124-xx have a watchdog timer
that need to be triggered periodically by a positive or negative transition at WDI. When the supervising system
fails to retrigger the watchdog circuit within the time-out interval ttout = 0.8 s, RESET output becomes active for
the time period td. This event also reinitializes the watchdog timer.
The circuits are available in a 5-pin SOT23-5 package. The TPS3123, TPS3124, TPS3125 devices are
characterized for operation over a temperature range of – 40
°C to 85°C.
PACKAGE INFORMATION STANDARD VERSIONS
TA
DEVICE NAME
THRESHOLD VOLTAGE
MARKING
TPS3123J12DBVR†
TPS3123J12DBVT‡
1.08 V
PBNI
TPS3123G15DBVR†
TPS3123G15DBVT‡
1.40 V
PBOI
TPS3123J18DBVR†
TPS3123J18DBVT‡
1.62 V
PBPI
TPS3124J12DBVR†
TPS3124J12DBVT‡
1.08 V
PBQI
40
°Cto85_C
TPS3124G15DBVR†
TPS3124G15DBVT‡
1.40 V
PBRI
– 40
°C to 85_C
TPS3124J18DBVR†
TPS3124J18DBVT‡
1.62 V
PBSI
TPS3125J12DBVR†
TPS3125J12DBVT‡
1.08 V
PBTI
TPS3125G15DBVR†
TPS3125G15DBVT‡
1.40 V
PBUI
TPS3125J18DBVR†
TPS3125J18DBVT‡
1.62 V
PBVI
TPS3125L30DBVR†
TPS3125L30DBVT‡
2.64 V
PBXI
† The DBVR passive indicates tape and reel of 3000 parts.
‡ The DBVT passive indicates tape and reel of 250 parts.


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