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Note 1: All voltages are referenced to ground.
Note 2: V
IH
is a function of the external pullup resistor and the V
CC
power supply.
Note 3: V
PUP
= external pullup voltage.
Note 4: Input load is to ground.
Note 5: Capacitance on the data line could be 800pF when power is first applied. If a 5kΩ resistor is used
to pull up the data line to V
PUP
, 5µs after power has been applied, the parasite capacitance does not affect
normal communications.
Note 6: Guaranteed by design; not production tested.
Note 7: Read data setup time refers to the time the host must pull the 1-Wire bus low to read a bit. Data is
guaranteed to be valid within 1µs of this falling edge, and remains valid for 14µs minimum (15µs total
from falling edge on 1-Wire bus).
Note 8: An additional reset or communication sequence cannot begin until the reset high time has
expired.
Note 9: The reset low time (t
RSTL
) should be restricted to a maximum of 960µs, to allow interrupt
signaling; otherwise, it could mask or conceal interrupt pulses.
PACKAGE INFORMATION
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the
drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
F5 iButton IB+5BW
21-0266 —
