參數資料
型號: DS1481S
廠商: Maxim Integrated Products
文件頁數: 1/10頁
文件大小: 0K
描述: IC BUS MASTER 1 WIRE 14-SOIC
標準包裝: 50
接口: 1 線
電源電壓: 2.7 V ~ 5.5 V
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 14-SOIC
包裝: 管件
安裝類型: 表面貼裝
1 of 10
061907
FEATURES
Provides a synchronous interface to Dallas
Semiconductor 1-Wire devices
Compatible with low power parallel ports
(can be used with microcontrollers)
Can be cascaded with other DS1481s
Allows print spooler and other processes to
run during 1-Wire I/O
Provides high speed communication with
overdrive capable devices
Space saving 14-pin (150 mil), SO package
Recommended for short 1-Wire networks
less than 3 inches. Longer 1-Wire lengths
can be achieved with the DS2480B.
PIN CONFIGURATION
PIN DESCRIPTION
VCC
- Supply
ENI
- Enable In
D/CLK
- Data/Clock
RES
- Reset
O1/BSY1
- Output 1/Busy 1
O2/BSY2
- Output 2/Busy 2
GND
- Ground
I1
- Input 1
I2
- Input 2
I/O
- 1-Wire
ENO
- Enable Out
NC
- No connection
DESCRIPTION
The DS1481 is a dedicated 1-Wire
timing generator. The device is normally used in conjunction with a
parallel port controller to provide the necessary interface to the host processor. Busy signals allow the
host processor to perform other tasks while 1-Wire “time-slots” are completed. The DS1481 also saves
the state of D/CLK and RES, allowing print spoolers to operate without affecting 1-Wire communication.
DS1481 based devices can be cascaded. The first device’s O1/BSY1 and O2/BSY2 connect to the PC
printer port’s BUSY and SELECT OUT signals (pins 11 and 13 respectively). The next DS1481 connects
its O1/BSY1 and O2/BSY2 to the first device’s I1 and I2 respectively. ENO of the first device connects
to ENI of the second device. More DS1481s can be stacked in a similar manner. The last device’s I1 and
I2 connect to BUSY and SELECT of the attached printer.
DS1481
1-Wire Bus Master with Overdrive
www.maxim-ic.com
Vcc
1
14
I/O
ENI
2
13
ENO
O1/BSY1
3
12
I1
O2/BSY2
4
11
I2
D/CLK
5
10
NC
RES
6
9
NC
7
8
GND
14-PIN SO (150 MIL)
1-Wire is a registered trademark of Dallas Semiconductor.
Not
Recommended
for
New
Design
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