TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087L DECEMBER 1994 REVISED FEBRUARY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Power-On Reset Generator
D
Automatic Reset Generation After
Voltage Drop
D
Precision Voltage Sensor
D
Temperature-Compensated Voltage
Reference
D
Programmable Delay Time by External
Capacitor
D
Supply Voltage Range . . . 2 V to 6 V
D
Defined RESET Output from V
DD
1 V
D
Power-Down Control Support for Static
RAM With Battery Backup
D
Maximum Supply Current of 16
A
D
Power Saving Totem-Pole Outputs
D
Temperature Range . . . Up to 55
C to
125
C
description
The TLC77xx family of micropower supply voltage
supervisors provide reset control, primarily in
microcomputer and microprocessor systems.
During power-on, RESET is asserted when V
DD
reaches 1 V. After minimum V
DD
(
2 V) is
established, the circuit monitors SENSE voltage
and keeps the reset outputs active as long as
SENSE voltage (V
I(SENSE)
) remains below the
threshold voltage. An internal timer delays return
of the output to the inactive state to ensure proper
system reset. The delay time, t
d
, is determined by
an external capacitor:
t
d
= 2.1
10
4
C
T
Where
C
T
is in farads
t
d
is in seconds
Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed
SENSE threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold
voltage, the outputs become active and stay in that state until SENSE voltage returns above threshold voltage
and the delay time, t
d
, has expired.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
1994 2003, Texas Instruments Incorporated
1
2
3
4
8
7
6
5
CONTROL
RESIN
CT
GND
V
DD
SENSE
RESET
RESET
D, JG, P OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
SENSE
NC
RESET
NC
NC
RESIN
NC
CT
NC
NC
CONTROL
NC
RESET
NC
NC
NC
NC
V
DD
FK PACKAGE
(TOP VIEW)
GND
1
2
3
4
5
10
9
8
7
6
NC
CONTROL
RESIN
CT
GND
NC
V
DD
SENSE
RESET
RESET
U PACKAGE
(TOP VIEW)
TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087L DECEMBER 1994 REVISED FEBRUARY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
TA
THRESHOLD
VOLTAGE
(V)
SMALL
OUTLINE (D)
CHIP
CARRIER (FK)
CERAMIC DIP
(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
40 C
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
40 C
to
2.63
TLC7703QD
--
--
--
TLC7703QP
TLC7703QPW
125
C
2.93
TLC7733QD
--
--
--
TLC7733QP
TLC7733QPW
4.55
TLC7705QD
--
--
--
TLC7705QP
TLC7705QPW
55
C
to
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
False
H
L
L
H
True
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
This symbol is in accordance with ANSI/IEEE Std 911984 and
IEC Publication 617-12.
6
1
3
2
7
SENSE
1
1
1
RESET
5
COMP
S
VIT
S<VIT
Z1
Z2
Z3
RESIN
CT
CONTROL
RESET
3
2
1
1
CX
TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087L DECEMBER 1994 REVISED FEBRUARY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
functional block diagram
1.1 V
R2
R1
RESET
RESET
VDD
GND
8
6
5
4
RESIN
CONTROL
SENSE
CT
3
1
2
7
1 M
50
A
Outputs are totem-pole configuration. External pullup or pulldown resistors are not required.
Nominal values:
TLC7701
TLC7703
R1 (Typ)
R2 (Typ)
TLC7733
TLC7705
750 k
910 k
290 k
450 k
0
502 k
698 k
TLC7725
600 k
600 k
timing diagram
RESET
Output
Output
Undefined
VDD and VI(SENSE)
td
Threshold Voltages
Vres
VIT
VIT+
td
t
t
VIT+
TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087L DECEMBER 1994 REVISED FEBRUARY 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, V
DD
(see Note 1)
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, CONTROL, RESIN, SENSE (see Note 1)
0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum low output current, I
OL
10
mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum high output current, I
OH
10 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
DD
)
10 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
DD
)
10 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: TL77xxI
40
C to 85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TL77xxQ
40
C to 125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TL77xxM
55
C to 125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to GND.
DISSIPATION RATING TABLE
PACKAGE
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA = 85
C
POWER RATING
TA = 125
C
POWER RATING
D
725 mW
5.8 mW/
C
377 mW
145 mW
FK
1375 mW
11.0 mW/
C
715 mW
275 mW
JG
1050 mW
8.4 mW/
C
546 mW
210 mW
P
1000 mW
8.0 mW/
C
520 mW
200 mW
PW
525 mW
4.2 mW/
C
273 mW
105 mW
U
700 mW
5.5 mW/
C
370 mW
150 mW
recommended operating conditions at specified temperature range
MIN
MAX
UNIT
Supply voltage, VDD
2
6
V
Input voltage, VI
0
VDD
V
High-level input voltage at RESIN and CONTROL, VIH
0.7
VDD
V
Low-level input voltage at RESIN and CONTROL, VIL
0.2
VDD
V
High-level output current, IOH
VDD
2 7 V
2
mA
Low-level output current, IOL
VDD
2.7 V
2
mA
Input transition rise and fall rate at RESIN and CONTROL,
t/
V
100
ns/V
Operating free air temperature range TA
TLC77xxI
40
85
C
Operating free-air temperature range, TA
TLC77xxQ
40
125
C
Operating free-air temperature range, TA
TLC77xxM
55
125
C
To ensure a low supply current, VIL should be kept <0.3 V and VIH > VDD 0.3 V.
TLC7701, TLC7725, TLC7703, TLC7733, TLC7705
MICROPOWER SUPPLY VOLTAGE SUPERVISORS
SLVS087L DECEMBER 1994 REVISED FEBRUARY 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions (see Note 2) (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
TLC77xx
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD = 2 V
1.8
VOH
High level output voltage
IOH = 20
A
VDD = 2.7 V
2.5
V
VOH
High-level output voltage
VDD = 4.5 V
4.3
V
IOH = 2 mA
VDD = 4.5 V
3.7
VDD = 2 V
0.2
VOL
Low level output voltage
IOL = 20
A
VDD = 2.7 V
0.2
V
VOL
Low-level output voltage
VDD = 4.5 V
0.2
V
IOL = 2 mA
VDD = 4.5 V
0.5
TLC7701
1.04
1.1
1.16
N
ti
i
i
t th
h ld
lt
TLC7725
2.18
2.25
2.32
VIT
Negative-going input threshold voltage,
SENSE (see Note 3)
TLC7703
VDD = 2 V to 6 V
2.56
2.63
2.70
V
SENSE (see Note 3)
TLC7733
2.86
2.93
3
TLC7705
4.47
4.55
4.63
TLC7701
VDD = 2 V to 6 V
30
mV
TLC7725
Vhys
Hysteresis voltage, SENSE
TLC7703,
VDD = 2 V to 6 V
70
mV
y
TLC7733,
VDD = 2 V to 6 V
70
mV
TLC7705
Vres
Power-up reset voltage
IOL = 20
A
1
V
RESIN
VI = 0 V to VDD
2
II
Input current
CONTROL
VI = VDD
7
15
A
II
Input current
SENSE
VI = 5 V
5
10
A
SENSE, TLC7701 only
VI = 5 V
2
RESIN = VDD,
IDD
Supply current
RESIN VDD,
SENSE = VDD
VITmax + 0.2 V
9
16
A
CONTROL = 0 V,
Outputs open
IDD(d) Supply current during td
VDD = 5 V,
RESIN = VDD,
CONTROL = 0 V,
VCT = 0 ,
SENSE = VDD,
Outputs open
120
150
A
CI
Input capacitance, SENSE
VI = 0 V to VDD
50
pF
Typical values apply at TA = 25
C.
The lowest supply voltage at which RESET becomes active. The symbol Vres is not currently listed within EIA or JEDEC standards for
semiconductor symbology. Rise time of VDD
15
s/V.
NOTES:
2. All characteristics are measured with CT = 0.1
F.
3. To ensure best stability of the threshold voltage, a bypass capacitor (ceramic, 0.1
F) should be connected near the supply terminals.
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