DS1249W Maxim, DS1249W Datasheet - Page 7

• Manufacturer Part Number: DS1249W
• Description: The DS1249W 2048kb nonvolatile (NV) SRAMs are 2,097,152-bit, fully static, NV SRAMs organized as 262,144 words by 8 bits
• Manufacturer: Maxim

7. If the
8. If
9. Each DS1249W has a built-in switch that disconnects the lithium source until V
10. All AC and DC electrical characteristics are valid over the full operating temperature range. For
11. In a power-down condition, the voltage on any pin may not exceed the voltage on V
12. t
13. t
14. DS1249 modules are recognized by Underwriters Laboratories (UL) under file E99151.
DC TEST CONDITIONS
Outputs open
Cycle = 200ns for operating current
All voltages are referenced to ground
ORDERING INFORMATION
DS1249W-100#
DS1249W-100IND#
#Denotes a RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements.
PACKAGE INFORMATION
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix
character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE
buffers remain in a high-impedance state during this period.
the output buffers remain in a high-impedance state during this period.
the user. The expected t
time power is first applied by the user.
commercial products, this range is 0°C to +70°C. For industrial products (IND), this range is -40°C to
+85°C.
WR1
WR2
WE
PART
and t
and t
32 EDIP
CE
is low or the
DH1
DH2
high transition occurs prior to, or simultaneously with, the
are measured from
are measured from
WE
TEMP RANGE
-40°C to +85°C
0°C to +70°C
DR
low transition occurs prior to, or simultaneously with, the
PACKAGE CODE
is defined as accumulative time in the absence of V
MDT32#7
WE
CE
going high.
going high.
TOLERANCE
3.3V ± 0.3V
3.3V ± 0.3V
7 of 8
SUPPLY
AC TEST CONDITIONS
Output Load: 100pF + 1TTL Gate
Input Pulse Levels: 0 to 2.7V
Timing Measurement Reference Levels
Input Pulse Rise and Fall Times: 5ns
OUTLINE NO.
Input: 1.5V
Output: 1.5V
21-0245
PIN-PACKAGE
32 740 EDIP
32 740 EDIP
WE
high transition, the output
LAND PATTERN NO.
CC
CC
CE
CC
is first applied by
SPEED GRADE
starting from the
.
Note that a “+”,
low transition,
—
(ns)
100
100
DS1249W