TLC7701 Datasheet, PDF (2/19 Pages) Texas Instruments – MICROPOWER SUPPLY VOLTAGE SUPERVISORS

TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087K – DECEMBER 1994 – REVISED JULY 1999
description (continued)
In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control
support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor
contains additional logic intended for control of static memories with battery backup during power failure. By
driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL
driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 10), the memory circuit is
automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the
battery.)
The TLC77xxI is characterized for operation over a temperature range of –40°C to 85°C; the TLC77xxQ is
characterized for operation over a temperature range of – 40°C to 125°C; and the TLC77xxM is characterized
for operation over the full Military temperature range of – 55°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
THRESHOLD
TA
VOLTAGE
SMALL
CHIP
CERAMIC DIP
(V)
OUTLINE (D)† CARRIER (FK)
(JG)
CERAMIC
DUAL
FLATPACK
(U)
PLASTIC DIP
(P)
THIN SHRINK
SMALL
OUTLINE
(PW)‡
1.1
TLC7701ID
—
—
—
TLC7701IP TLC7701IPW
– 40°C
2.25
TLC7725ID
—
—
—
TLC7725IP TLC7725IPW
to
2.63
TLC7703ID
—
—
—
TLC7703IP TLC7703IPW
85°C
2.93
TLC7733ID
—
—
—
TLC7733IP TLC7733IPW
4.55
TLC7705ID
—
—
—
TLC7705IP TLC7705IPW
1.1
TLC7701QD
—
—
—
TLC7701QP TLC7701QPW
– 40°C
2.25
TLC7725QD
—
—
—
TLC7725QP TLC7725QPW
to
2.63
TLC7703QD
—
—
—
TLC7703QP TLC7703QPW
125°C
2.93
TLC7733QD
—
—
—
TLC7733QP TLC7733QPW
4.55
TLC7705QD
—
—
—
TLC7705QP TLC7705QPW
– 55°C
2.93
—
TLC7733MFK TLC7733MJG
—
—
—
to
125°C
4.55
—
TLC7705MFK TLC7705MJG
TLC7705MU
—
—
† _{The D package is available taped and reeled. Add the suffix R to the device type when ordering (e.g., TLC7705QDR).}
‡ _{The PW package is only available left-end taped and reeled (indicated by the LE suffix on the device type; e.g., TLC7705QPWLE).}
FUNCTION TABLE
CONTROL RESIN VI(SENSE)>VIT+ RESET RESET
L
L
False
H
L
L
L
True
H
L
L
H
L
H
False
True
H
L
L§
H§
H
L
False
H
L
H
L
True
H
L
H
H
False
H
L
H
H
True
H
H§
§ _{RESET and RESET states shown are valid for t > td.}
logic symbol^¶
7
SENSE
2
RESIN
COMP
≥1
S _S<VIT
VIT
Z1
1
3
CT
× CX
Z2
1
CONTROL
1
≥1
Z3
2
≥1
3
5
RESET
6
RESET
¶ _{This symbol is in accordance with ANSI/IEEE Std 91–1984 and}
IEC Publication 617-12.
2
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