DS1245Y/AB

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PACKAGES

The DS1245 devices are available in two packages: 32-pin DIP and 34-pin PowerCap Module (PCM).

The 32-pin DIP integrates a lithium battery, an SRAM memory and a nonvolatile control function into a

single package with a JEDEC-standard 600-mil DIP pinout. The 34-pin PowerCap Module integrates

SRAM memory and nonvolatile control along with contacts for connection to the lithium battery in the

DS9034PC PowerCap. The PowerCap Module package design allows a DS1245 PCM device to be

surface mounted without subjecting its lithium backup battery to destructive high-temperature reflow

soldering. After a DS1245 PCM is reflow soldered, a DS9034PC PowerCap is snapped on top of the

PCM to form a complete Nonvolatile SRAM module. The DS9034PC is keyed to prevent improper

attachment. DS1245 PowerCap Modules and DS9034PC PowerCaps are ordered separately and shipped

in separate containers. See the DS9034PC data sheet for further information.

ABSOLUTE MAXIMUM RATINGS*

Voltage on Any Pin Relative to Ground

-0.3V to +7.0V

Operating Temperature

0°C to 70°C, -40°C to +85°C for Ind parts

Storage Temperature

-40°C to +70°C, -40°C to +85°C for Ind parts

Soldering Temperature

260°C for 10 seconds

*

This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

RECOMMENDED DC OPERATING CONDITIONS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

DS1245AB Power Supply Voltage

4.75

5.0

5.25

V

DS1245Y Power Supply Voltage

4.5

5.0

5.5

V

Logic 1

2.2

V

Logic 0

0.0

0.8

V

DC ELECTRICAL

±=5% for DS1245AB)

CHARACTERISTICS

±=10% for DS1245Y)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Input Leakage Current

-1.0

+1.0

µA

≥ V

IH

≤ V

CC

-1.0

+1.0

µA

Output Current @ 2.4V

-1.0

mA

Output Current @ 0.4V

2.0

mA

5.0

10.0

mA

3.0

5.0

mA

Operating Current

85

mA

Write Protection Voltage (DS1245AB)

4.50

4.62

4.75

V

Write Protection Voltage (DS1245Y)

4.25

4.37

4.5

V