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PDF DS2411 Data sheet ( Hoja de datos )
| Número de pieza | DS2411 | |
| Descripción | Silicon Serial Number | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-6131; Rev 11/11
DS2411
Silicon Serial Number with VCC Input
FEATURES
Unique, Factory-Lasered and Tested 64-Bit
Registration Number (8-Bit Family Code
Plus 48-Bit Serial Number Plus 8-Bit CRC
Tester); Guaranteed No Two Parts Alike
Standby Current <1μA
Built-In Multidrop Controller Enables
Multiple DS2411s to Reside on a Common
1-Wire Network
Multidrop Compatible with Other 1-Wire
Products
8-Bit Family Code Identifies Device as
DS2411 to the 1-Wire Master
Low-Cost TSOC, SOT23-3, and Flip-Chip
Surface-Mount Packages
Directly Connects to a Single-Port Pin of a
Microprocessor and Communicates at up to
15.4kbps
Overdrive Mode Boosts Communication
Speed to 125kbps
Operating Range: 1.5V to 5.25V, -40°C to
+85°C
PIN DESCRIPTION
PIN
NAME SOT23 TSOC
I/O 1
2
VCC
GND
2
3
6
1
N.C. — 3, 4, 5
FLIP
CHIP
A1
B2
B1
A2
PIN CONFIGURATION
3
1
2
12
3
SOT23-3, Top View
TSOC, Top View
6
5
4
1 -1rrd
2
AB
Flip Chip, Top View with
Laser Mark, Contacts
Not Visible.
“rrd” = Revision/Date
ORDERING INFORMATION
PART
DS2411R+T&R
DS2411P+
DS2411P+T&R
DS2411X
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
3 SOT23-3
6 TSOC
6 TSOC
4 Flip Chip*
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*The DS2411X is RoHS qualified and comes in tape and reel.
DESCRIPTION
The DS2411 silicon serial number is a low-cost, electronic registration number with external power
supply. It provides an absolutely unique identity that can be determined with a minimal electronic
interface (typically, a single port pin of a microcontroller). The DS2411’s registration number is a
factory-lasered, 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit
family code (01h). Data is transferred serially through the Maxim 1-Wire protocol. The external power
supply is required, extending the operating voltage range of the device below typical 1-Wire devices.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
1 of 12
1 page  
Figure 2. 1-WIRE CRC GENERATOR
POLYNOMIAL = X8 + X5 + X4 + 1
DS2411
1st 2nd 3rd 4th
STAGE STAGE STAGE STAGE
X0 X1 X2 X3
5th
STAGE
X4
Figure 3. DS2411 EQUIVALENT CIRCUIT
VCC
Rx
Tx
100Ω
MOSFET
GROUND
6th 7th 8th
STAGE STAGE STAGE
X5 X6
X7
INPUT DATA
X8
I/O
-1µA ≤ IL ≤ 1µA
Figure 4. BUS MASTER CIRCUIT
BUS MASTER
DS5000 OR 8051
EQUIVALENT
OPEN-DRAIN
Rx PORT PIN
Tx
VCC to DS2411
RPUP
I/O to DS2411
Ground to DS2411
RPUP must be between 0.3 kΩ and 2.2 kΩ. The optimal
value depends on the 1-Wire communication speed and
the bus load characteristics.
5 of 12
5 Page 
NOISE SUPPRESSION SCHEME Figure 8
VPUP
tREH
VTH
VHY
0V
Case A
Case B
tGL
tREH
Case C
tGL
DS2411
CRC GENERATION
To validate the registration number transmitted from the DS2411, the bus master can generate a CRC
value from the 8-bit family code and unique 48-bit serial number as it is received. If the CRC matches the
last 8 bits of the registration number, the transmission is error free.
The equivalent polynomial function of this CRC is: CRC = x8 + x5 + x4 + 1. For more information on
generating CRC values see Application Note 27.
CUSTOM DS2411
Customization of a portion of the unique 48-bit serial number by the customer is available. Maxim will
register and assign a specific customer ID in the 12 most significant bits of the 48-bit field. The next most
significant bits are selectable by the customer as a starting value, and the least significant bits are non-
selectable and will be automatically incremented by one. Certain quantities and conditions apply for these
custom parts. Contact your Maxim sales representative for more information.
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
SOT23-3
U3+3
21-0051
90-0179
6 TSOC
D6+1
21-0382
90-0321
4 Flip Chip
BF411-1
21-0282
Refer to 21-0282
11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet DS2411.PDF ] | |
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