DS1284QN Maxim Integrated Products, DS1284QN Datasheet - Page 9

• Manufacturer Part Number: DS1284QN
• Description: IC TIMEKEEPER WATCHDG IND 28PLCC
• Manufacturer: Maxim Integrated Products
• Type: Watchdog Timerr

Specifications of DS1284QN

• Memory Size: 50B
• Time Format: HH:MM:SS:hh (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-LCC, 28-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +7.0V
Operating Temperature Range
Storage Temperature Range………………………………………………………………...-40°C to +85°C
Soldering Temperature………………..……………...See IPC/JEDEC J-STD-020 Specification (Note 13)
Stresses beyond those listed as “Absolute Maxim Ratings” may cause permanent damage to the device. These are stress ratings only, any
functional operation of the device at these or any other conditions beyond the those indicated in operations section of the specifications is no
implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CONDITIONS
(T
Power-Supply Voltage
Input Logic 1
Input Logic 0
V
DC ELECTRICAL CHARACTERISTICS
(V
Input Leakage Current
Output Leakage Current
I/O Leakage Current
CE  V
Output Current at 2.4V
Output Current at 0.4V
Standby Current CE = 2.2V
Standby Current CE > V
Active Current
Write-Protection Voltage
DC ELECTRICAL CHARACTERISTICS
(V
Battery Current (EOSC = 0)
BAT
A
CC
CC
Commercial………………………………………………………………………………..0C to +70C
Industrial………………………………………………………………………………...-40°C to +85°C
= -40°C to +85°C or 0°C to +70°C.)
= 5V 10%, T
= 0V, V
Input Voltage
IH
 V
PARAMETER
PARAMETER
PARAMETER
CC
BAT
= 2.4V to 3.5V, T
A
= -40C to +85C or 0°C to +70°C.)
CC
- 0.5
A
= 0°C to +70°C.)
SYMBOL
SYMBOL
SYMBOL
V
I
I
I
V
I
V
V
V
I
CCS1
CCS2
I
I
I
I
BAT
LIO
BAT
OH
CC
LO
OL
IL
CC
IH
TP
IL
9 of 18
x V
1.088
MIN
MIN
MIN
-0.3
-1.0
-1.0
-1.0
-1.0
4.5
2.2
2.4
2.0
BAT
1.26 x
TYP
TYP
V
TYP
+0.5
5.0
3.0
3.0
BAT
x V
MAX
V
MAX
MAX
1.324
+0.8
+1.0
+1.0
+1.0
+0.6
5.5
0.3
3.5
7.0
4.0
CC
15
BAT
+
UNITS
UNITS
UNITS
mA
mA
mA
mA
mA
A
A
A
A
V
V
V
V
V
DS1284/DS1286
NOTES
NOTES
NOTES
10
10
10
10