DS1744-70+ Dallas Semiconductor, DS1744-70+ Datasheet - Page 11

• Manufacturer Part Number: DS1744-70+
• Description: Nonvolatile timekeeping RAM, with Crystal, Power-Fail & Lithium Battery, DIP-28
• Manufacturer: Dallas Semiconductor

Specifications of DS1744-70+

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

AC CHARACTERISTICS—WRITE CYCLE (5V)
(V
Write Cycle Time
Address Setup Time
Data Setup Time
Data Hold Time
Data Hold Time
Address Hold Time
Address Hold 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
Address Hold Time
Address Hold 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
WEW
t
t
t
t
CEW
t
t
t
t
t
t
WEZ
DH1
DH2
AH1
AH2
WEW
t
t
CEW
CEW
WC
WR
t
t
WEZ
DH1
DH2
AH1
AH2
AS
DS
WC
WR
AS
DS
MIN
70
50
60
30
MIN
0
0
0
5
5
5
120
100
110
110
11 of 20
80
10
10
0
0
0
0
TYP
TYP
MAX
MAX
25
120
40
UNITS
UNITS
ns
ns
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