DS1248Y-70IND+ Maxim Integrated Products, DS1248Y-70IND+ Datasheet - Page 2

• Manufacturer Part Number: DS1248Y-70IND+
• Description: IC NVSRAM 1MBIT 70NS 32DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1248Y-70IND+

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 1M (128K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-DIP Module (600 mil), 32-EDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ORDERING INFORMATION
DS1248Y-70
DS1248Y-70IND
DS1248Y-100IND
DS1248YP-70
DS1248W-120
DS1248W-120IND
DS1248WP-120
DS1248WP-120IND
DS1248Y-70+
DS1248Y-70IND+
DS1248Y-100IND+
DS1248YP-70+
DS1248W-120+
DS1248W-120IND+
DS1248WP-120+
DS1248WP-120IND+
+ Denotes a lead(Pb)-free/RoHS-compliant device.
* DS9034PCX (PowerCap) required. Must be ordered separately.
** An “IND” is located in the lower right-hand corner of the label.
*** The top mark will include a “+” symbol on lead-free devices.
DETAILED DESCRIPTION
The DS1248 1024k NV SRAM with phantom clock is a fully static, nonvolatile RAM (organized as 128k
words by 8 bits) with a built-in real-time clock. The DS1248 has a self-contained lithium energy source
and control circuitry, which constantly monitors V
condition occurs, the lithium energy source is automatically switched on and writes protection is
unconditionally enabled to prevent garbled data in both the memory and real-time clock.
PACKAGES
The DS1248 is available in two packages: 32-pin DIP and 34-pin PowerCap module. The 32-pin DIP
style module integrates the crystal, lithium energy source, and silicon in one package. The 34-pin
PowerCap module board is designed with contacts for connection to a separate PowerCap (DS9034PCX)
that contains the crystal and battery. This design allows the PowerCap to be mounted on top of the
DS1248P after completion of the surface mount process. Mounting the PowerCap after the surface mount
process prevents damage to the crystal and battery because of the high temperatures required for solder
reflow. The PowerCap is keyed to prevent reverse insertion. The PowerCap module board and PowerCap
are ordered separately and shipped in separate containers.
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
V
3.3V ±10%
3.3V ±10%
3.3V ±10%
3.3V ±10%
3.3V ±10%
3.3V ±10%
3.3V ±10%
3.3V ±10%
CC
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
5V ±10%
2 of 18
RANGE
CC
for an out-of-tolerance condition. When such a
PIN-PACKAGE
32 EDIP
32 EDIP
32 EDIP
34 PowerCap*
32 EDIP
32 EDIP
34 PowerCap*
34 PowerCap*
32 EDIP
32 EDIP
32 EDIP
34 PowerCap*
32 EDIP
32 EDIP
34 PowerCap*
34 PowerCap*
DS1248Y-70
DS1248Y-70 IND
DS1248Y-100 IND
DS1248YP-70
DS1248W-120
DS1248W-120 IND
DS1248WP-120
DS1248WP-120**
DS1248Y-70
DS1248Y-70 IND
DS1248Y-100 IND
DS1248YP-70
DS1248W-120
DS1248W-120 IND
DS1248WP-120
DS1248WP-120**
TOP MARK***