DS2409 Dallas Semiconducotr, DS2409 Datasheet - Page 18

• Manufacturer Part Number: DS2409
• Description: MicroLAN Coupler
• Manufacturer: Dallas Semiconducotr

AC ELECTRICAL CHARACTERISTICS
NOTES:
1. All voltages are referenced to ground.
2. Measured with outputs open.
3. V
4. Input load is to ground.
5. An additional reset or communication sequence cannot begin until the reset high time has expired.
6. Read data setup time refers to the time the bus master must pull the I/O line low to read a bit. Data is
7. The reset low time (t
8. The main output has a slew rate controlled output. The indicated current is a DC value. The sink
Time Slot
Write 1 Low Time
Write 0 Low Time
Read Low Time
Read Data Valid
Release Time
Read Data Setup
Recovery Time
Reset Time High
Reset Time Low
Presence Detect High
Presence Detect Low
guaranteed to be valid within 1 µs of this falling edge.
otherwise, it could mask or conceal interrupt pulses. The DS2409 may perform a power-on reset cycle
and deactivate both 1-Wire outputs if the 1-Wire input is low for minimum 8 ms. A low time of 12 ms
or more will always cause a power-on reset cycle.
current typically reaches 80% of its DC value 1 µs after turning on the transistor.
PUP
= external pullup voltage.
PARAMETER
RSTL
) should be restricted to a maximum of 960 µs, to allow interrupt signaling,
SYMBOL
t
RELEASE
t
t
t
t
t
t
LOWR
t
t
t
LOW1
LOW0
t
SLOT
RSTH
RSTL
t
18 of 18
RDV
PDH
REC
PDL
SU
MIN
480
480
60
60
15
60
1
1
0
1
(-40°C to +85°C, V
exactly 15
TYP
15
MAX
120
120
960
240
15
15
45
60
1
UNITS
DD
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
= 5V ±10%)
NOTES
102199
DS2409
6
5
7