Datasheet
2
LTC690/LTC691
LTC694/LTC695
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
(Notes 1 and 2)
Terminal Voltage
V
CC
.................................................... –0.3V to 6.0V
V
BATT
................................................ –0.3V to 6.0V
All Other Inputs .................. –0.3V to (V
OUT
+ 0.3V)
Input Current
V
CC
.............................................................. 200mA
V
BATT
............................................................ 50mA
GND .............................................................. 20mA
V
OUT
Output Current ................. Short-Circuit Protected
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC690/91/94/95C............................... 0°C to 70°C
LTC690/91/94/95I ........................... –40°C to 85°C
LTC690M ...................................... –55°C to 125°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
WU
U
PACKAGE
/
O
RDER I FOR ATIO
LTC691CSW
LTC691ISW
LTC695CSW
LTC695ISW
LTC691CN
LTC691IN
LTC695CN
LTC695IN
TOP VIEW
SW PACKAGE
16-LEAD WIDE PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
BATT
V
OUT
V
CC
GND
BATT ON
LOW LINE
OSC IN
OSC SEL
RESET
RESET
WDO
CE IN
CE OUT
WDI
PFO
PFI
T
JMAX
= 110°C, θ
JA
= 130°C/W Conditions: PCB mount on
FR4 Material, Still Air at 25°C, Copper Trace
1
2
3
4
5
6
7
8
TOP VIEW
N PACKAGE
16-LEAD PDIP
9
16
15
14
13
12
11
10
V
CC
V
OUT
V
BATT
GND
BATT ON
OSC IN
LOW LINE
OSC SEL
WDO
CE IN
RESET
RESET
CE OUT
WDI
PFI
PFO
T
JMAX
= 110°C, θ
JA
= 130°C/W
LTC690CN8
LTC690IN8
LTC690MJ8
LTC694CN8
LTC694IN8
LTC690CS8
LTC690IS8
LTC694CS8
LTC694IS8
S8 PART
MARKING
690
690I
694
694I
T
JMAX
= 110°C, θ
JA
= 100°C/W (J8)
T
JMAX
= 110°C, θ
JA
= 130°C/W (N8)
1
2
3
45
6
7
8
TOP VIEW
V
CC
V
OUT
PFI
GND
WDI
V
BATT
PFO
RESET
N8 PACKAGE
8-LEAD PDIP
J8 PACKAGE
8-LEAD CERDIP
(Note 3)
ORDER PART
NUMBER
ORDER PART
NUMBER
PRODUCT SELECTIO GUIDE
U
CONDITIONAL
WATCHDOG BATTERY POWER-FAIL RAM WRITE PUSH-BUTTON BATTERY
PINS RESET TIMER BACK-UP WARNING PROTECT RESET BACK-UP
LTC690 8 X X X X
LTC691 16 X X X X X
LTC694 8 X X X X
LTC695 16 X X X X X
LTC699 8 X X
LTC1232 8 X X X
LTC1235 16 X X X X X X X
1
2
3
4
5
6
7
8
TOP VIEW
V
BATT
V
CC
V
OUT
PFO
PFI
GND
S8 PACKAGE
8-LEAD PLASTIC SO
WDI
RESET
T
JMAX
= 110°C, θ
JA
= 180°C/W Conditions: PCB Mount on
FR4 Material, Still Air AT 25°C, Copper Trace