DS1490F Datasheet, PDF (1/3 Pages) Dallas Semiconductor – 2-in-1 Fob

www.dalsemi.com
FEATURES
1-Wire^® to USB port adapter for direct
connection to notebook and desktop
computers
Any iButton^™ mounts in the ergonomically
angled handle for touch-and-go applications
such as door entry
Fast, convenient computer log on with data
rates up to142k bits/second from the 1-Wire
signal
USB guard protects the USB A connector
during everyday use conditions.
1.5M byte speed, low power, USB
1.2 compliant for plug and play operation
LED shines through translucent case to
indicate status
Both the 2-in-1 Fob and its resident iButton
are powered entirely from an USB interface
Fob sources up to 10 ma for powering 1-Wire
chips that require strong pull up such as the
Java^™-powered or Thermochron iButton
Low Profile Blue Dot extends 1-Wire
signaling to other 1-Wire devices
✼_NOTE:
The DS1490F 2-in-1 Fob is sold without the
iButton to give choice of the desired iButton.
Preliminary
DS1490F
2-in-1 Fob*
1 of 3
101000