Datasheet

www.maximintegrated.com
Maxim Integrated │ 26
DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs
with Trickle Charger
Note: All devices are rated for the -40°C to +85°C operating
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
†A “+” anywhere on the top mark denotes a lead(Pb)-
free/RoHS-compliant package.
rr = Revision code on second line of top mark.
PART
TYP
OPERATING
VOLTAGE (V)
PIN-
PACKAGE
TOP MARK
†
DS1390U-18+ 1.8 10 µSOP 1390 rr-18
DS1390U-3+ 3.0 10 µSOP 1390 rr-3
DS1390U-33+ 3.3 10 µSOP 1390 rr-33
DS1391U-18+ 1.8 10 µSOP 1391 rr-18
DS1391U-3+ 3.0 10 µSOP 1391 rr-3
DS1391U-33+ 3.3 10 µSOP 1391 rr-33
DS1392U-18+ 1.8 10 µSOP 1393 rr-18
DS1392U-3+ 3.0 10 µSOP 1392 rr-3
DS1392U-33+ 3.3 10 µSOP 1392 rr-33
DS1393U-18+ 1.8 10 µSOP 1393 rr-18
DS1393U-3+ 3.0 10 µSOP 1393 rr-3
DS1393U-33+ 3.3 10 µSOP 1393 rr-33
DS1394U-33+ 3.3 10 µSOP 1394 rr-33
Ordering Information