DS1744-70 Maxim Integrated Products, DS1744-70 Datasheet - Page 8

• Manufacturer Part Number: DS1744-70
• Description: IC RTC RAM Y2K 5V 70NS 28-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1744-70

• Memory Size: 256K (32K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: DS174470

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………..…….…...……..……..……...……………..…-0.3V to +6.0V
Storage Temperature Range
Lead Temperature (soldering, 10s)……….................................................................………………………………..+260°C
Soldering Temperature (reflow, PowerCap).................................................................................................................+260°C
This is a stress rating only and functional operation of the device at these or any other condition 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
RECOMMENDED DC OPERATING CONDITIONS
(T
Logic 1 Voltage (All Inputs)
V
V
Logic 0 Voltage (All Inputs)
V
V
DC ELECTRICAL CHARACTERISTICS
(V
Active Supply Current
TTL Standby Current
( CE = V
CMOS Standby Current
( CE  V
Input Leakage Current (Any
Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(I
Output Logic 0 Voltage
(I
Write Protection Voltage
Battery Switchover Voltage
CC
CC
CC
CC
OUT
OUT
A
CC
= Over the operating range)
= 5V 10%
= 3.3V 10%
= 5V 10%
= 3.3V 10%
= 5.0V 10%, T
= -1.0mA)
= +2.1mA)
EDIP..........................……………………..………………………………………………………...-40°C to +85°C
PowerCap..................……………………..……………………………………………………….-55°C to +125°C
Note: EDIP is hand or wave-soldered only.
PARAMETER
Commercial
PARAMETER
IH
CC
Industrial
RANGE
)
- 0.2V)
A
= Over the operating range.)
-40°C to +85°C, Noncondesnsing
0°C to +70°C, Noncondensing
SYMBOL
SYMBOL
V
V
V
I
Icc
V
I
I
I
V
V
CC1
V
V
CC
OL
IL
OH
OL
SO
PF
IH
IH
IL
IL
2
TEMP RANGE
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
8 of 16
MIN
4.25
2.4
MIN
-1
-1
-0.3
2.2
2.0
0.3
TYP
V
TYP
BAT
V
V
CC
CC
MAX
MAX
0.8
0.6
+ 0.3V
+ 0.3V
4.50
0.4
+1
+1
3.3V 10% or 5V10%
3.3V 10% or 5V10%
75
6
4
UNITS
UNITS
V
mA
mA
mA
A
A
V
V
V
V
V
CC
NOTES
NOTES
2, 3, 10
2, 3
2, 3
1, 4
1
1
1
1
1