DS1746-70IND Maxim Integrated Products, DS1746-70IND Datasheet - Page 2

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

Specifications of DS1746-70IND

• 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: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP Module (600 mil), 32-EDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN DESCRIPTION
PDIP
1, 30
10
11
12
23
25
26
27
28
31
13
14
15
17
18
19
20
21
16
22
24
29
32
—
—
2
3
4
5
6
7
8
9
PIN
PowerCap
1, 33, 34
32
30
25
24
23
22
21
20
19
18
28
29
27
26
31
16
15
14
13
12
11
10
17
3
2
9
8
7
6
5
4
X1, X2,
NAME
GND
V
N.C.
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
RST
A16
A14
A12
A10
A11
A13
A15
V
WE
CE
OE
A7
A6
A5
A4
A3
A2
A1
A0
A9
A8
BAT
CC
No Connection
Address Input
Data Input/Output
Ground
Active-Low Chip Enable Input
Active-Low Output Enable Input
Active-Low Write-Enable Input
Power-Supply Input
Active-Low Power-Fail Output, Open Drain. Requires a pullup resistor for
proper operation.
Crystal Connection, V
against reverse charging when used with a lithium battery.
ic.com/qa/info/ul/
DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs
2 of 16
BAT
Battery Connection. UL recognized to ensure
FUNCTION
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