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DS1646-120+

P1-P3P4-P6P7-P9P10-P12
DS1646/DS1646P
7 of 12
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +6.0V
Storage Temperature Range
EDIP..........………………………………….........................................……………-40°C to +85°C
PowerCap......…………………………………....................................……………-55°C to +125°C
Lead Temperature (soldering, 10s) ……........................................................................................... +260°C
Note: EDIP is wave or hand soldered only.
Soldering Temperature (reflow, PowerCap) ..................................................................................... +260°C
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.
OPERATING RANGE
RANGE
TEMPERATURE
V
CC
Commercial
0°C to +70°C, Noncondensing
5V
±
10%
RECOMMENDED DC OPERATING CONDITIONS (Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Supply Voltage
V
CC
4.5
5.0
5.5
V
1
Logic 1 Voltage All Inputs
V
IH
2.2
V
CC
+0.3
V
Logic 0 Voltage All Inputs
V
IL
-0.3
0.8
V
DC ELECTRICAL CHARACTERISTICS (Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Average V
CC
Power Supply Current
I
CC1
85
mA
2, 3
TTL Standby Current (
CE
=V
IH
)
I
CC2
3 6 mA 2, 3
CMOS Standby Current
(
CE
=V
CC
-0.2V)
I
CC3
2 4.0 mA 2, 3
Input Leakage Current (Any Input)
I
IL
-1
+1
µ
A
Output Leakage Current
I
OL
-1 +1
µ
A
Output Logic 1 Voltage
(I
OUT
= -1.0 mA)
V
OH
2.4 V
Output Logic 0 Voltage
(I
OUT
= +2.1 mA)
V
OL
0.4 V
Power-Fail Voltage
V
PF
4.0
4.25
4.5
V
DS1646/DS1646P
8 of 12
AC ELECTRICAL CHARACTERISTICS (Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Read Cycle Time
t
RC
120
ns
Address Access Time
t
AA
120
ns
CE
Access Time
t
CEA
120
ns
CE
Data Off Time
t
CEZ
40
ns
Output Enable Access Time
t
OEA
100
ns
Output Enable Data Off Time
t
OEZ
40
ns
Output Enable to DQ Low-Z
t
OEL
5
ns
CE
to DQ Low-Z
t
CEL
5
ns
Output Hold from Address
t
OH
5
ns
Write Cycle Time
t
WC
120
ns
Address Setup Time
t
AS
0
ns
CE
Pulse Width
t
CEW
100
ns
Address Hold from End of Write
t
AH1
5
ns
5
t
AH2
30
ns
6
Write Pulse Width
t
WEW
75
ns
WE
Data Off Time
t
WEZ
40
ns
WE
or
CE
Inactive Time
t
WR
10
ns
Data Setup Time
t
DS
85
ns
Data Hold Time High
t
DH1
0
ns
5
t
DH2
25
ns
6
AC TEST CONDITIONS
Input Levels: 0V to 3V
Transition Times: 5 ns
CAPACITANCE (T
A
= +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Capacitance on All Pins (except DQ)
C
I
7
pF
Capacitance on DQ Pins
C
DQ
10
pF
AC ELECTRICAL CHARACTERISTICS
(POWER-UP/DOWN TIMING) (Over the Operating Range)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CE
or
WE
at V
IH
before Power-Down
t
PD
0
µs
V
PF
(Max) to V
PF
(Min) V
CC
Fall Time
t
F
300
µ
s
V
PF
(Min) to V
SO
V
CC
Fall Time
t
FB
10
µ
s
V
SO
to V
PF
(Min) V
CC
Rise Time
t
RB
1
µ
s
V
PF
(Min) to V
PF
(Max) V
CC
Rise Time
t
R
0
µ
s
Power-Up
t
REC
15
35
ms
Expected Data Retention Time
(Oscillator On)
t
DR
10 years 4
DS1646/DS1646P
9 of 12
DS1646 READ CYCLE TIMING
DS1646 WRITE CYCLE TIMING
P1-P3P4-P6P7-P9P10-P12

DS1646-120+

Mfr. #:
Buy DS1646-120+
Manufacturer:
Maxim Integrated
Description:
Real Time Clock NV Timekeeping RAM
Lifecycle:
New from this manufacturer.
Delivery:
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