DS1744W-120 Maxim Integrated Products, DS1744W-120 Datasheet - Page 13
![IC RTC RAM Y2K 3.3V 120NS 28EDIP](/photos/6/58/65855/ds1225ab-200__sml.jpg)
DS1744W-120
Manufacturer Part Number
DS1744W-120
Description
IC RTC RAM Y2K 3.3V 120NS 28EDIP
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAM/Y2Kr
Datasheet
1.DS1744W-120.pdf
(16 pages)
Specifications of DS1744W-120
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
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
28-DIP Module (600 mil), 28-EDIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS1744W-120
Manufacturer:
DALLAS
Quantity:
19
Company:
Part Number:
DS1744W-120
Manufacturer:
ROHM
Quantity:
2 705
Company:
Part Number:
DS1744W-120+
Manufacturer:
Maxim
Quantity:
533
Part Number:
DS1744W-120+
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS1744W-120IND
Manufacturer:
S/PHI
Quantity:
3 986
Part Number:
DS1744W-120IND
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS1744W-120IND+
Manufacturer:
Maxim Integrated Products
Quantity:
135
Part Number:
DS1744W-120IND+
Manufacturer:
MAXIM/美信
Quantity:
20 000
POWER-UP/DOWN AC CHARACTERISTICS (5V)
(V
V
V
V
Power-Up Recover Time
Expected Data-Retention Time
(Oscillator ON)
POWER-UP/DOWN TIMING (5V DEVICE)
CE or WE at V
CC
CC
CC
CC
Fall Time: V
Fall Time: V
Rise Time: V
= 5.0V 10%, T
PARAMETER
IH
PF(MAX)
PF(MIN)
PF(MIN)
Before Power-Down
A
= Over the operating range.)
to V
to V
to V
SO
PF(MIN)
PF(MAX)
SYMBOL
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
t
t
t
t
REC
t
t
DR
PD
FB
F
R
13 of 16
MIN
300
10
10
0
0
TYP
MAX
35
UNITS
years
ms
s
s
s
s
NOTES
5, 6