DS2409P/T&R Maxim Integrated Products, DS2409P/T&R Datasheet - Page 18

• Manufacturer Part Number: DS2409P/T&R
• Description: IC COUPLER MICROLAN 1-WIRE 6TSOC
• Manufacturer: Maxim Integrated Products

Specifications of DS2409P/T&R

• Interface: 1-Wire
• Voltage - Supply: 4.5 V ~ 5.5 V
• Package / Case: 6-TSOC
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Applications: -

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
9. The optimal sampling point for the master is as close as possible to the end time of the 15µs t
10. The duration of the low pulse sent by the master should be a minimum of 1µs with a maximum value
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.
period without exceeding t
time for the pull-up resistor to recover to a high level. For a Read-Zero Time Slot, it ensures that a
read will occur before the fastest 1-Wire device(s) release the line.
as short as possible to allow time for the pull-up resistor to recover the line to a high level before the
1-Wire device samples in the case of a Write-One Time or before the master samples in the case of a
Read-One Time.
PUP
= external pullup voltage.
PARAMETER
RSTL
) should be restricted to a maximum of 960 µs, to allow interrupt signaling,
RDV
. For the case of a Read-One Time Slot, this maximizes the amount of
SYMBOL
t
RELEASE
t
t
t
t
t
t
t
LOWR
t
LOW1
LOW0
t
t
RSTH
SLOT
RSTL
RDV
t
REC
PDH
PDL
SU
18 of 18
MIN
480
480
60
60
15
60
1
1
0
1
(-40°C to +85°C, V
TYP
15
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
10
10
9
6
5
7
RDV