DS1631/DS1631A/DS1731
2 of 15
Table 1. ORDERING INFORMATION
ORDERING
NUMBER
PACKAGE
MARKING
DESCRIPTION
DS1631U+
D1631 (See Note)
DS1631 in Lead-Free 8-Pin 糞OP
DS1631U+T&R D1631 (See Note)
DS1631 in Lead-Free 8-Pin 糞OP, 3000 Piece Tape-and-
Reel
DS1631Z+
DS1631Z (See Note) DS1631 in Lead-Free 150 mil 8-Pin SO
DS1631Z+T&R DS1631Z (See Note)
DS1631 in Lead-Free 150 mil 8-Pin SO, 2500 Piece Tape-
and-Reel
DS1631AU+
1631A (See Note)
DS1631A in Lead-Free 8-Pin 糞OP
DS1631AU+T&R 1631A (See Note)
DS1631A in Lead-Free 8-Pin 糞OP, 3000 Piece Tape-and-
Reel
DS1631S+
DS1631S (See Note) DS1631 in Lead-Free 208 mil 8-Pin SO
DS1631S+T&R
DS1631S (See Note)
DS1631 in Lead-Free 208 mil 8-Pin SO, 2000 Piece Tape-
and-Reel
DS1631+
DS1631 (See Note) DS1631 in Lead-Free 300 mil 8-Pin DIP
DS1731U+
D1731 (See Note)
DS1731 in Lead-Free 8-Pin 糞OP
DS1731U+T&R D1731 (See Note)
DS1731 in Lead-Free 8-Pin 糞OP, 3000 Piece Tape-and-
Reel
DS1631U
D1631
DS1631 in 8-Pin 糞OP
DS1631U/T&R
D1631
DS1631 in 8-Pin 糞OP, 3000-Piece Tape-and-Reel
DS1631Z
DS1631Z
DS1631 in 150mil 8-Pin SO
DS1631Z/T&R
DS1631Z
DS1631 in 150mil 8-Pin SO, 2500-Piece Tape-and-Reel
DS1631AU
1631A
DS1631A in 8-Pin 糞OP
DS1631AU/T&R 1631A
DS1631A in 8-Pin 糞OP, 3000-Piece Tape-and-Reel
DS1631S
DS1631S
DS1631 in 208 mil 8-Pin SO
DS1631S/T&R
DS1631S
DS1631 in Lead-Free 208 mil 8-Pin SO, 2000 Piece Tape-
and-Reel
DS1631
DS1631
DS1631 in 300 mil 8-Pin DIP
DS1731U
D1731
DS1731 in 8-Pin 糞OP
DS1731U/T&R
D1731
DS1731 in 8-Pin 糞OP, 3000-Piece Tape-and-Reel
Note: A "+" symbol will also be marked on the package near the Pin 1 indicator
Table 2. DETAILED PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
SDA
Data Input/Output Pin for 2-Wire Serial Communication Port. Open-Drain.
2
SCL
Clock Input Pin for 2-Wire Serial Communication Port.
3
T
OUT
Thermostat Output Pin. Push-Pull.
4
GND
Ground Pin
5
A
2
Address Input Pin
6
A
1
Address Input Pin
7
A
0
Address Input Pin
8
V
DD
Supply Voltage Pin. +2.7V to +5.5V Power-Supply Pin.