DS1244W-120IND+ Maxim Integrated Products, DS1244W-120IND+ Datasheet - Page 13

• Manufacturer Part Number: DS1244W-120IND+
• Description: IC NVSRAM 256KBIT 120NS 28DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1244W-120IND+

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER-DOWN/POWER-UP TIMING
V
V
V
V
Expected Data Retention Time
Warning: Under no circumstances are negative undershoots, of any amplitude, allowed when
device is in battery-backup mode.
CE
CE
CC
PF(MIN)
CC
PF(MIN)
at V
at V
Slew from V
Slew from V
(
(
IH
IH
PARAMETER
CE
CE
PARAMETER
before Power-Down
after Power-Up
at V
at V
IH
IH
PF(MAX)
PF(MAX)
)
)
to
to
SYMBOL
SYMBOL
t
t
t
REC
t
t
DR
PD
R
F
MIN
MIN
300
13 of 19
1.5
10
0
0
TYP
TYP
Over the operating range (3.3V)
MAX
MAX
2.5
UNITS
UNITS
years
ms
s
s
s
(T
A
= +25°C)
NOTES
NOTES
9