DS1244 Maxim, DS1244 Datasheet - Page 9

• Manufacturer Part Number: DS1244
• Description: The DS1244 256k NV SRAM with a Phantom clock is a fully static nonvolatile RAM (NV SRAM) (organized as 32k words by 8 bits) with a built-in real-time clock
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground
Storage Temperature Range
Lead Temperature (soldering, 10 seconds) ……………………………………………………… +260ºC
Soldering Temperature (reflow, PowerCap) ……………………………………………………
This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect
reliability.
OPERATING RANGE
Commercial
Industrial
RECOMMENDED OPERATING CONDITIONS
Input Logic 1
Input Logic 0
DC ELECTRICAL CHARACTERISTICS
Input Leakage Current
I/O Leakage Current
Output Current at 2.4V
Output Current at 0.4V
Standby Current CE = 2.2V
Standby Current
Operating Current t
Write Protection Voltage
Battery Switchover Voltage
CE ≥ V
CE = V
RANGE
EDIP ………………………………………………………….……………………-40ºC to +85ºC
PowerCap …………………………………………………………………………-55ºC to +125ºC
Note: EDIP is wave or hand-soldered only.
IH
CC
P ARAMETER
0 B
PARAMETER
≤ V
- 0.5V
CC
V
V
V
V
(NONCONDENSING)
CC
CC
CC
CC
CYC
= 5V ±10%
= 3.3V ±10%
= 5V ±15%
= 3.3V ±10%
TEMP RANGE
-40°C to +85°C
0°C to +70°C
= 70ns
SYMBOL
SYMBOL
I
I
I
V
V
I
CCS1
CCS2
I
CC01
I
I
OH
OL
IL
IO
SO
PF
V
V
IH
IL
3.3V ±10% or 5V ±10%
3.3V ±10% or 5V ±10%
MIN
4.25
(5V product) ………………………..-0.3V to +6.0V
(3.3V product) ……………………..-0.3V to +4.6V
-1.0
-1.0
-1.0
MIN
2.0
9 of 20
-0.3
-0.3
2.2
2.0
V
CC
TYP
V
TYP
4.37
3.0
BAT
5
V
V
Over the operating range (5V)
CC
CC
MAX
MAX
+1.0
+1.0
4.50
0.8
0.6
5.0
10
85
+ 0.3
+ 0.3
Over the operating range
UNITS
UNITS
mA
mA
mA
mA
mA
µA
µA
V
V
V
V
7 B
NOTES
NOTES
+260ºC
11
11
12
11
11