Datasheet

DS1251/DS1251P
2 of 20
ORDERING INFORMATION
PART TEMP RANGE
VOLTAGE
RANGE (V)
PIN-PACKAGE
DS1251W-120+
0°C to +70°C
3.3
32 EDIP (0.740a)
DS1251W-120IND+
-40°C to +85°C
3.3
32 EDIP (0.740a)
DS1251WP-120+
0°C to +70°C
3.3
34 PowerCap*
DS1251WP-120IND+
-40°C to +85°C
3.3
34 PowerCap*
DS1251Y-70+
0°C to +70°C
5.0
32 EDIP (0.740a)
DS1251YP-70+
0°C to +70°C
5.0
34 PowerCap*
DS1251YP-70IND+
-40°C to +85°C
5.0
34 PowerCap*
+ Denotes a lead(Pb)-free/RoHS-compliant package.
*DS9034PCX+ or DS9034I-PCX+ (PowerCap) required. Must be ordered separately.
PIN DESCRIPTION
PIN
NAME FUNCTION
EDIP
PowerCap
1
1
RST
Active-Low Reset Input. This pin has an internal pullup resistor connected to V
CC
.
1
34
A18
Address Inputs
2
3
A16
3
32
A14
4
30
A12
5
25
A7
6
24
A6
7
23
A5
8
22
A4
9
21
A3
10
20
A2
11
19
A1
12
18
A0
23
28
A10
25
29
A11
26
27
A9
27
26
A8
28
31
A13
30
33
A17
31
2
A15
13
16
DQ0
Data In/Data Out
14
15
DQ1
15
14
DQ2
17
13
DQ3
18
12
DQ4
19
11
DQ5
20
10
DQ6
21
9
DQ7