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DS2482S-800/T&R Datasheet

  • DS2482S-800/T&R

  • Eight-Channel 1-Wire Master

  • 22頁

  • DALLAS   DALLAS

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DS2482-800
Eight-Channel 1-Wire Master
www.maxim-ic.com
GENERAL DESCRIPTION
The DS2482-800 is an I虜C鈩?to 1-Wire bridge device
that interfaces directly to standard (100kHz max) or
fast (400kHz max) I虜C masters to perform bi-
directional protocol conversion between the I虜C
master and any downstream 1-Wire slave devices.
Relative to any attached 1-Wire slave device, the
DS2482-800 is a 1-Wire master. Internal factory-
trimmed timers relieve the system host processor
from generating time-critical 1-Wire waveforms,
supporting both standard and Overdrive 1-Wire
communication speeds. To optimize 1-Wire
waveform generation, the DS2482-800 performs
slew-rate control on rising and falling 1-Wire edges
and has a programmable feature to mask the fast
presence pulse edge that some 1-Wire slave devices
can generate. Programmable strong pullup features
support 1-Wire power delivery to 1-Wire devices such
as EEPROMs and sensors. The DS2482-800
combines these features with eight independent 1-
Wire I/O channels. The I虜C slave address assignment
is controlled by three binary address inputs, resolving
potential conflicts with other I虜C slave devices in the
system.
芒
FEATURES
摟
摟
摟
摟
摟
摟
摟
摟
I虜C Host Interface, Supports 100kHz and 400kHz
I虜C Communication Speeds
1-Wire Master I/O with Selectable Active or
Passive 1-Wire Pullup
Provides Reset/Presence, 8-Bit, Single-Bit, and
Three-Bit 1-Wire I/O Sequences
Eight Channels of Independently Operated
1-Wire I/O
Standard and Overdrive 1-Wire Communication
Speeds
Slew Controlled 1-Wire Edges
Selectable 1-Wire Slave Presence Pulse Falling
Edge Masking to Control Fast Edges on the
1-Wire Line
Supports Low-Impedance 1-Wire Strong Pullup
for EEPROMs, Temp Sensors, or Other 1-Wire
Slaves That Have Momentary High Current
Modes
Three Address Inputs for I虜C Address
Assignment
Wide Operating Range: 2.9V to 5.5V, -40擄C to
+85擄C
16-Pin SO Package (150 mil)
PART
DS2482S-800
DS2482S-800/T&R
TEMP RANGE
-40 to +85擄C
-40 to +85擄C
PIN-PACKAGE
16 SO (150 mil )
16 SO (150 mil )
摟
摟
摟
APPLICATIONS
摟
摟
摟
摟
摟
Wireless Base Stations
Central Office Switches
PBXs
Rack-Based Servers
Medical Clinical Diagnostic Equipment
ORDERING INFORMATION
PIN CONFIGURATION
IO3
SCL
1-Wire
Device #1
TYPICAL OPERATING CIRCUIT
V
CC
R
P
(I虜C port)
SDA
SCL
R
t
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
1-Wire lines
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IO2
IO1
IO0
GND
IO4
IO5
IO6
IO7
SDA
VDD
NC
AD2
AD1
AD0
碌C
AD0
AD1
AD2
1-Wire
Device #2
DS2482 800
I
2
C is a trademark of Philips Corp. Purchase of I
2
C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated
Companies, conveys a license under the Philips I
2
C Patent Rights to use these components in an I
2
C system, provided that the system
conforms to the I
2
C Standard Specification as defined by Philips.
1-Wire is a registered trademark of Dallas Semiconductor.
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata.
1 of 22
REV: 061804

DS2482S-800/T&R 產(chǎn)品屬性

  • Maxim Integrated Products

  • Eight Channel 1 Wire Master

  • + 85 C

  • SMD/SMT

  • SOIC-16 Narrow

  • - 40 C

  • Reel

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