DS1746-70+ Maxim Integrated Products, DS1746-70+ Datasheet - Page 11

• Manufacturer Part Number: DS1746-70+
• Description: IC RTC RAM Y2K 5V 70NS 32-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1746-70+

• Memory Size: 1M (128K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP Module (600 mil), 32-EDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC CHARACTERISTICS—WRITE CYCLE (5V)
(V
Write Cycle Time
Address Setup Time
Data Setup Time
Data Hold Time
Data Hold Time
Write Recovery Time
Write Recovery Time
AC CHARACTERISTICS—WRITE CYCLE (3.3V)
(V
Write Cycle Time
Address Setup Time
Data Setup Time
Data Hold Time
Data Hold Time
Write Recovery Time
Write Recovery Time
CE Pulse Width
CE Pulse Width
CE and CE2 Pulse Width
WE Pulse Width
WE Data Off Time
WE Pulse Width
WE Data Off Time
CC
CC
= 5.0V 10%, T
= 3.3V 10%, T
PARAMETER
PARAMETER
A
A
= Over the Operating Range.)
= Over the Operating Range.)
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WEW
WEW
t
t
CEW
CEW
CEW
t
t
WEZ
WR1
WR2
t
t
WEZ
WR1
WR2
DH1
DH2
DH1
DH2
WC
WC
AS
DS
AS
DS
DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs
MIN
MIN
120
100
110
110
70
50
60
30
11 of 16
80
10
0
0
0
5
5
0
0
0
5
TYP
TYP
MAX
MAX
120
25
40
UNITS
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
NOTES
8
9
8
9
8
9
8
9