DS1744WP-120IND+ Maxim Integrated Products, DS1744WP-120IND+ Datasheet - Page 9
![IC RTC RAM Y2K 3.3V 120NS 34-PCM](/photos/6/58/65856/406-34-pcm_sml.jpg)
DS1744WP-120IND+
Manufacturer Part Number
DS1744WP-120IND+
Description
IC RTC RAM Y2K 3.3V 120NS 34-PCM
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAM/Y2Kr
Datasheet
1.DS1744W-120.pdf
(16 pages)
Specifications of DS1744WP-120IND+
Memory Size
256K (32K x 8)
Time Format
HH:MM:SS (24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
34-PowerCap™ Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DC ELECTRICAL CHARACTERISTICS
(V
AC CHARACTERISTICS—READ CYCLE (5V)
(V
Read Cycle Time
Address Access Time
Output Hold from Address
CE to DQ Low-Z
CE Access Time
CE Data Off Time
OE to DQ Low-Z
OE Access Time
OE Data Off Time
Active Supply Current
TTL Standby Current
( CE = V
CMOS Standby Current
( CE V
Input Leakage Current (Any
Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(I
Output Logic 0 Voltage
(I
Write Protection Voltage
Battery Switchover Voltage
OUT
OUT
CC
CC
= 3.3V 10%, T
= 5.0V 10%,
= -1.0mA)
= +2.1mA)
PARAMETER
CC
IH
PARAMETER
)
- 0.2V)
A
T
= Over the operating range.)
A
=
Over the operating range.)
SYMBOL
SYMBOL
V
I
I
V
V
V
I
I
CC1
CC2
I
CC
OL
IL
OH
OL
SO
PF
t
t
t
t
t
t
t
t
t
CEA
OEL
OEA
OEZ
CEL
CEZ
AA
OH
RC
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
9 of 16
MIN
2.80
2.4
-1
-1
MIN
70
5
5
5
V
TYP
V
or
TYP
BAT
PF
MAX
MAX
2.97
0.4
+1
+1
30
70
70
25
35
25
2
2
UNITS
UNITS
mA
mA
mA
A
A
V
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
NOTES
2, 3, 10
2, 3
2, 3
1, 4
1
1
1