DS1775R+U [ROCHESTER]
DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT, ROHS COMPLIANT, SOT-23, 5 PIN;
| 型号： | DS1775R+U |
| 厂家： | 
Rochester Electronics |
| 描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT, ROHS COMPLIANT, SOT-23, 5 PIN 输出元件 传感器 换能器 |
| 文件： | 总15页 (文件大小：1120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DS1775
Digital Thermometer
and Thermostat in SOT23
GENERAL DESCRIPTION
FEATURES
• Temperature Measurements Require No
External Components
• Measures Temperatures from -55°C to
+125°C (-67°F to +257°F)
• ±2.0°C Thermometer Accuracy
• Thermometer Resolution is Configurable
from 9 Bits to 12 Bits (0.5°C to 0.0625°C
Resolution)
The DS1775 digital thermometer and thermostat
provides temperature readings that indicate the
device’s temperature. Thermostat settings and
temperature readings are all communicated
to/from the DS1775 over a simple 2-wire serial
interface. No additional components are
required; the device is truly a “temperature-to-
digital” converter.
• User-Definable Thermostat Settings
• Data is Read From/Written to Through a
2-Wire Serial Interface
• 2.7V to 5.5V Wide Power-Supply Range
• Software Compatible with DS75 2-Wire
Thermal Watchdog in Thermometer Mode
• Space-Conscious 5-Pin SOT23 Package with
Low Thermal Time Constant
For applications that require greater temperature
resolution, the user can adjust the readout
resolution from 9 to 12 bits. This is particularly
useful in applications where thermal runaway
conditions must be detected quickly.
The open-drain thermal alarm output, O.S.,
becomes active when the temperature of the
device exceeds a user-defined temperature TOS.
The number of consecutive faults required to set
O.S. active is configurable by the user. The
device can also be configured in the interrupt or
comparator mode, to customize the method
which clears the fault condition.
PIN CONFIGURATION
SCL
GND
O.S.
1
SDA
VDD
5
2
3
As a digital thermometer, the DS1775 is
software compatible with the DS75 2-wire
thermal watchdog. The DS1775 is assembled in
a compact 5-pin SOT23 package, allowing for
low-cost thermal monitoring/control in space-
constrained applications. The low thermal mass
allows for time constants previously only
possible with thermistors.
4
SOT23
PIN DESCRIPTION
GND
SCL
SDA
VDD
Ground
2-Wire Serial Clock
2-Wire Serial Data Input/Output
Power-Supply Voltage
Thermostat Output Signal
APPLICATIONS
• Personal Computers/Servers/Workstations
• Cell Phones
O.S.
• Office Equipment
• Any Thermally-Sensitive System
Ordering Information appears at end of data sheet.
1 of 14
19-6687; Rev 5/13
DS1775
Table 1. Detailed Pin Description
PIN
NAME
FUNCTION
Clock Input/Output for 2-Wire Serial Communication Port. This input should
be tied to GND for stand-alone thermostat operation.
Ground
1
SCL
2
GND
Thermostat Output. Open-drain output becomes active when temperature
exceeds TOS. Device configuration defines means to clear overtemperature
state.
3
O.S.
4
5
VDD
Supply Voltage 2.7V to 5.5V Input Power Pin
Data Input/Output for 2-Wire Serial Communication Port. In the stand-alone
thermostat mode, this input selects hysteresis.
SDA
DETAILED DESCRIPTION
Figure 1 shows a block diagram of the DS1775. The DS1775 consists of five major components:
1. Precision temperature sensor
2. Analog-to-digital converter
3. 2-wire interface electronics
4. Data registers
5. Thermostat comparator
The factory-calibrated temperature sensor requires no external components. Upon power-up, the DS1775
begins temperature conversions with the default resolution of 9 bits (0.5°C resolution). The host can
periodically read the value in the temperature register, which contains the last completed conversion. As
conversions are performed in the background, reading the temperature register does not affect the
conversion in progress.
In power-sensitive applications, the user can put the DS1775 into a shutdown mode, under which the
sensor complete and store the conversion in progress and revert to a low-power standby state. In
applications where small incremental temperature changes are critical, the user can change the conversion
resolution from 9 bits to 10, 11, or 12. Each additional bit of resolution approximately doubles the
conversion time. This is accomplished by programming the configuration register. The configuration
register defines the conversion state, thermometer resolution/conversion time, active state of the
thermostat output, number of consecutive faults to trigger an alarm condition, and the method to
terminate an alarm condition.
The user can also program overtemperature (TOS) and undertemperature (THYST) setpoints for thermostatic
operation. The power-up state of TOS is +80°C and that for THYST is +75°C. The result of each
temperature conversion is compared with the TOS and THYST setpoints. The DS1775 offers two modes for
temperature control, the comparator mode and the interrupt mode. This allows the user the flexibility to
customize the condition that would generate and clear a fault condition. Regardless of the mode chosen,
the O.S. output becomes active only after the measured temperature exceeds the respective trip-point a
consecutive number of times; the number of consecutive conversions beyond the limit to generate an O.S.
is programmable. The power-up state of the DS1775 is in the comparator mode with a single fault
generating an active O.S.
Digital data is written to/read from the DS1775 via a 2-wire interface, and all communication is MSb
first.
2 of 14
DS1775
Figure 1. Block Diagram
OPERATION
Measuring Temperature
The core of DS1775 functionality is its direct-to-digital temperature sensor. The DS1775 measures
temperature through the use of an on-chip temperature measurement technique with an operating range
from -55°C to +125°C. Temperature conversions are initiated upon power-up, and the most recent result
is stored in the thermometer register. Conversions are performed continuously unless the user intervenes
by altering the configuration register to put the DS1775 into a shutdown mode. Regardless of the mode
used, the digital temperature can be retrieved from the temperature register by setting the pointer to that
location (00h, power-up default). The DS1775 power-up default has the sensor automatically performing
9-bit conversions continuously. Details on how to change the settings after power-up are contained in the
Programming section.
The resolution of the temperature conversion is configurable (9, 10, 11, or 12 bits), with 9-bit readings the
default state. This equates to a temperature resolution of 0.5°C, 0.25°C, 0.125°C, or 0.0625°C. Following
each conversion, thermal data is stored in the thermometer register in two’s complement format; the
information can be retrieved over the 2-wire interface with the device pointer set to the temperature
register. Table 2 describes the exact relationship of output data to measured temperature. The table
assumes the DS1775 is configured for 12-bit resolution; if the device is configured in a lower resolution
mode, those bits contain zeros. The data is transmitted serially over the 2-wire serial interface, MSb first.
The MSb of the temperature register contains the sign (S) bit, denoting whether the temperature is
positive or negative. For Fahrenheit usage, a lookup table or conversion routine must be used.
3 of 14
DS1775
Table 2. Temperature/Data Relationships
S
26
25
24
(UNIT = °C)
2-4
23
22
0
21
0
20
LSb
0
MSB
LSB
MSb
2-1
2-2
2-3
0
TEMPERATURE
DIGITAL OUTPUT
(BINARY)
DIGITAL OUTPUT
(HEX)
(°C)
+125
+25.0625
+10.125
+0.5
0
-0.5
-10.125
-25.0625
-55
0111 1101 0000 0000
0000 1010 0010 0000
0000 1010 0010 0000
0000 0000 1000 0000
0000 0000 0000 0000
1111 1111 1000 0000
1111 0101 1110 0000
1110 0110 1111 0000
1100 1001 0000 0000
7D00h
1910h
0A20h
0080h
0000h
FF80h
F5E0h
E6F0h
C900h
Thermostat Control
In its comparator operating mode, the DS1775 functions as a thermostat with programmable hysteresis, as
shown in Figure 2. When the DS1775’s temperature meets or exceeds the value stored in the high
temperature trip register (TOS) a consecutive number of times, as defined by the configuration register, the
output becomes active and stays active until the first time that the temperature falls below the temperature
stored in the low temperature trigger register (THYST). In this way, any amount of hysteresis may be
obtained. The DS1775 powers up in the comparator mode with TOS = +80°C and THYST = +75°C and can
be used as a stand-alone thermostat (no 2-wire interface required) with those setpoints.
In the interrupt mode, the O.S. output first becomes active following the programmed number of
consecutive conversions above TOS. The fault can only be cleared by either setting the DS1775 in a
shutdown mode or by reading any register (temperature, configuration, TOS, or THYST) on the device.
Following a clear, a subsequent fault can only occur if consecutive conversions fall below THYST. This
interrupt/clear process is thus cyclical (TOS, clear, THYST, clear, TOS, clear, THYST, clear, etc.). Only the
first of multiple consecutive TOS violations activates O.S., even if each fault is separated by a clearing
function. The same situation applies to multiple consecutive THYST events.
4 of 14
DS1775
Figure 2. O.S. Output Transfer Function
Regardless of the mode chosen, the O.S. output is open-drain and the active state is set in the
configuration register. The power-up default is active low. See the Programming section for instructions
in adjusting the thermostat setpoints, thermostat mode, and O.S. active state.
Programming
There are three areas of interest in programming the DS1775: the configuration register, the TOS register,
and the THYST register. All programming is done via the 2-wire interface by setting the pointer to the
appropriate location. Table 3 illustrates the pointer settings for the four registers of the DS1775.
Table 3. Pointer Register Structure
POINTER ACTIVE REGISTER
00h
01h
02h
03h
Temperature (default)
Configuration
THYST
TOS
The DS1775 powers up with the temperature register selected. If the host wishes to change the data
pointer, it simply addresses the DS1775 in the write mode (R/ = 0), receives an acknowledge, and
W
writes the 8 bits that correspond to the new desired location. The last pointer location is always
maintained so that consecutive reads from the same register do not require the host to always provide a
pointer address. The only exception is at power-up, in which case the pointer is always set to 00h, the
5 of 14
DS1775
temperature register. The pointer address must always precede data in writing to a register, regardless of
which address is currently selected. See the 2-Wire Serial Data Bus section for details of the 2-wire bus
protocol.
Configuration Register Programming
The configuration register is accessed if the DS1775 pointer is currently set to the 01h location. Writing
to or reading from the register is determined by the R/W bit of the 2-wire control byte (see the 2-Wire
Serial Data Bus section). Data is read from or written to the configuration register MSb first. The format
of the register is illustrated in Table 4. The effect each bit has on DS1775 functionality is described below
along with the power-up state of the bit. The user has read/write access to all bits in the configuration
register. The entire register is volatile, and thus it powers up in the default state.
Table 4. Configuration/Status Register
0
R1
R0
F1
F0
POL
TM
SD
MSb
LSb
SD = Shutdown bit. If SD is 0, the DS1775 continuously performs temperature conversions and stores
the last completed result in the thermometer register. If SD is changed to 1, the conversion in progress is
completed and stored; then the device reverts to a low-power standby mode. The O.S. output is cleared if
the device is in the interrupt mode and remains unchanged in the comparator mode. The 2-wire port
remains active. The power-up default state is 0 (continuous conversion mode).
TM = Thermostat mode. If TM = 0, the DS1775 is in the comparator mode. TM = 1 sets the device to the
interrupt mode. See the Thermostat Control section for a description of the difference between the two
modes. The power-up default state of the TM bit is 0 (comparator mode).
POL = O.S. Polarity Bit. If POL = 1, the active state of the O.S. output is high. A 0 stored in this location
sets the thermostat output to an active-low state. The user has read/write access to the POL bit, and the
power-up default state is 0 (active low).
F0, F1 = O.S. Fault Tolerance bits. The fault tolerance defines the number of consecutive conversions
returning a temperature beyond limits is required to set the O.S. output in an active state. This may be
necessary to add margin in noisy environments. Table 5 defines the four settings. The DS1775 powers up
with F0 = F1 = 0, such that a single occurrence triggers a fault.
Table 5. Fault Tolerance Configuration
CONSECUTIVE CONVERSIONS BEYOND LIMITS
F1
F0
TO GENERATE FAULT
0
0
1
1
0
1
0
1
1
2
4
6
6 of 14
DS1775
R0, R1 = Thermometer resolution bits. Table 6 defines the resolution of the digital thermometer, based
on the settings of these two bits. There is a direct trade-off between resolution and conversion time, as
shown in the AC Electrical Characteristics. The default state is R0 = 0 and R1 = 0 (9-bit conversions).
Table 6. Thermometer Resolution Configuration
THERMOMETER RESOLUTION
MAX CONVERSION TIME
R1
R0
(BITS)
(SECONDS)
0.1875
0.375
0
0
1
1
0
1
0
1
9
10
11
12
0.75
1.5
Thermostat Setpoints Programming
The thermostat registers (TOS and THYST) can be programmed or read via the 2-wire interface. TOS is
accessed by setting the DS1775 data pointer to the 03h location, and to the 02h location for THYST
.
The format of the TOS and THYST registers is identical to that of the Thermometer register; that is, 12-bit
2’s complement representation of the temperature in °C. The user can program the number of bits (9, 10,
11, or 12) for each TOS and THYST that corresponds to the thermometer resolution mode chosen. For
example, if the 9-bit mode is chosen the three least significant bits of TOS and THYST are ignored by the
thermostat comparator. Table 7 shows the format for both TOS and THYST. The power-up default for TOS is
+80°C and for THYST is +75°C.
Table 7. Thermostat Setpoint (TOS/THYST) Format
S
26
25
24
23
22
0
21
0
20
LSb
0
MSB
LSB
MSb
2-1
(UNIT = °C)
2-2
2-3
2-4
0
TEMPERATURE
DIGITAL OUTPUT
(BINARY)
DIGITAL OUTPUT
(HEX)
(°C)
+80
+75
+10.125
+0.5
0
-0.5
-10.125
-25.0625
-55
0101 0000 0000 0000
0100 1011 0000 0000
0000 1010 0010 0000
0000 0000 1000 0000
0000 0000 0000 0000
1111 1111 1000 0000
1111 0101 1110 0000
1110 0110 1111 0000
1100 1001 0000 0000
5000h
4B00h
0A20h
0080h
0000h
FF80h
F5E0h
E6F0h
C900h
If the user does not wish to take advantage of the thermostat capabilities of the DS1775, the 24 bits can be
used for general storage of system data that need not be maintained following a power loss.
7 of 14
DS1775
2-WIRE SERIAL DATA BUS
The DS1775 supports a bidirectional 2-wire bus and data transmission protocol. A device that sends data
onto the bus is defined as a transmitter, and a device receiving data as a receiver. The device that controls
the message is called a “master”. The devices that are controlled by the master are “slaves”. The bus must
be controlled by a master device which generates the serial clock (SCL), controls the bus access, and
generates the START and STOP conditions. The DS1775 operates as a slave on the 2-wire bus.
Connections to the bus are made via the open-drain I/O lines SDA and SCL.
The following bus protocol has been defined (see Figure 3):
• Data transfer may be initiated only when the bus is not busy.
• During data transfer, the data line must remain stable whenever the clock line is HIGH. Changes
in the data line while the clock line is high are interpreted as control signals.
Accordingly, the following bus conditions have been defined:
Bus not busy: Both data and clock lines remain HIGH.
Start data transfer: A change in the state of the data line, from HIGH to LOW, while the clock is
HIGH, defines a START condition.
Stop data transfer: A change in the state of the data line, from LOW to HIGH, while the clock line
is HIGH, defines the STOP condition.
Data valid: The state of the data line represents valid data when, after a START condition, the data
line is stable for the duration of the HIGH period of the clock signal. The data on the line must be
changed during the LOW period of the clock signal. There is one clock pulse per bit of data.
Each data transfer is initiated with a START condition and terminated with a STOP condition. The
number of data bytes transferred between START and STOP conditions is not limited, and is
determined by the master device. The information is transferred byte-wise and each receiver
acknowledges with a ninth bit.
Within the bus specifications a standard mode (100kHz clock rate) and a fast mode (400kHz clock
rate) are defined. The DS1775 works in both modes.
Acknowledge: Each receiving device, when addressed, is obliged to generate an acknowledge after
the reception of each byte. The master device must generate an extra clock pulse which is associated
with this acknowledge bit.
A device that acknowledges must pull down the SDA line during the acknowledge clock pulse in such
a way that the SDA line is stable LOW during the HIGH period of the acknowledge related clock
pulse. Of course, setup and hold times must be taken into account. A master must signal an end of
data to the slave by not generating an acknowledge bit on the last byte that has been clocked out of
the slave. In this case, the slave must leave the data line HIGH to enable the master to generate the
STOP condition.
8 of 14
DS1775
Figure 3. Data Transfer on 2-Wire Serial Bus
Figure 3 details how data transfer is accomplished on the 2-wire bus. Depending upon the state of the
R/W bit, two types of data transfer are possible:
1) Data transfer from a master transmitter to a slave receiver. The first byte transmitted by the
master is the slave address. Next follows a number of data bytes. The slave returns an acknowledge
bit after each received byte.
2) Data transfer from a slave transmitter to a master receiver. The first byte (the slave address) is
transmitted by the master. The slave then returns an acknowledge bit. Next follows a number of data
bytes transmitted by the slave to the master. The master returns an acknowledge bit after all received
bytes other than the last byte. At the end of the last received byte, a ‘not acknowledge’ is returned.
The master device generates all the serial clock pulses and the START and STOP conditions. A transfer
is ended with a STOP condition or with a repeated START condition. Since a repeated START condition
is also the beginning of the next serial transfer, the bus is not released.
The DS1775 can operate in the following two modes:
1) Slave receiver mode: Serial data and clock are received through SDA and SCL. After each byte is
received, an acknowledge bit is transmitted. START and STOP conditions are recognized as the
beginning and end of a serial transfer. Address recognition is performed by hardware after reception
of the slave address and direction bit.
2) Slave transmitter mode: The first byte is received and handled as in the slave receiver mode.
However, in this mode, the direction bit indicates that the transfer direction is reversed. Serial data is
transmitted on SDA by the DS1775 while the serial clock is input on SCL. START and STOP
conditions are recognized as the beginning and end of a serial transfer.
SLAVE ADDRESS
A control byte is the first byte received following the START condition from the master device. The
control byte consists of a 4-bit control code; for the DS1775, this is set as 1001 binary for read and write
operations. The next three bits of the control byte are the device select bits (A2, A1, A0). These bits are
set to 000 (A2 = 0, A1 = 0, A0 = 0) for the DS1775R and vary according to the device’s part number as
specified in the Ordering Information table. They are used by the master device to select which of eight
devices are to be accessed. The set bits are in effect the three least significant bits of the slave address.
The last bit of the control byte (R/
W
) defines the operation to be performed. When set to a 1 a read
operation is selected; when set to a 0 a write operation is selected. Following the START condition, the
DS1775 monitors the SDA bus checking the device type identifier being transmitted. Upon receiving the
1001 code and appropriate device select bits of 000, the DS1775 outputs an acknowledge signal on the
SDA line. See Figure 4.
9 of 14
DS1775
Figure 4. 2-Wire Serial Communication with DS1775
10 of 14
DS1775
ABSOLUTE MAXIMUM RATINGS
(Voltages relative to ground.)
Voltage Range on VDD
Voltage Range on Any Other Pin
Operating Temperature Range
Storage Temperature Range
-0.3V to +7.0V
-0.3V to +7.0V
-55°C to +125°C
-55°C to +125°C
+300°C
Lead Temperature (soldering, 10s)
Soldering Temperature (reflow)
+260°C
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect
reliability.
DC ELECTRICAL CHARACTERISTICS
(2.7V ≤ VDD ≤ 5.5V, TA = -55°C to +125°C, unless otherwise noted.)
PARAMETER
Supply Voltage
SYMBOL CONDITION
MIN
2.7
TYP
MAX
5.5
VDD+0.5
0.3VDD
UNITS NOTES
VDD
VIH
VIL
V
V
V
1
1
1
Input Logic-High
Input Logic-Low
0.7VDD
-0.5
3mA sink
current
6mA sink
current
4mA sink
current
0.4 < VI/O
0.9VDD
VOL1
0
0
0.4
0.6
0.8
+10
SDA Output Logic-Low
Voltage
V
1
VOL2
O.S. Saturation Voltage
VOL
V
1, 9
2
Input Current Each I/O
Pin
<
-10
µA
I/O Capacitance
Standby Current
CI/O
IDD1
10
1
pF
µA
3, 4
3, 4
Active temp
conversions
Communication
only
1000
100
Active Current
IDD
µA
DIGITAL THERMOMETER
-10°C to +85°C
-55°C to +125°C
±2.0
±3.0
12
Thermometer Error
Resolution
TERR
9, 10
°C
9
Bits
9-bit
conversion
10-bit
conversion
11-bit
conversion
12-bit
125
250
187.5
375
Conversion Time
tCONVT
ms
500
750
1000
1500
conversion
11 of 14
DS1775
AC ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE
(VDD = 2.7V to 5.5V, TA = -55°C to +125°C, unless otherwise noted.) (Figure 5)
PARAMETER
SYMBOL CONDITIONS
MIN
TYP MAX UNITS NOTES
Fast mode
Standard mode
400
kHz
100
SCL Clock Frequency
fSCL
Bus Free Time
Fast mode
tBUF
1.3
4.7
Between a STOP and
START Condition
Hold Time (Repeated)
START Condition
µs
Standard mode
Fast mode
tHD:STA
0.6
4.0
5
µs
µs
µs
µs
µs
ns
ns
ns
µs
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
1.3
4.7
0.6
4.0
Low Period of SCL
High Period of SCL
tLOW
tHIGH
Fast mode
Standard mode
0.6
4.7
Setup Time for a
Repeated START
tSU:STA
Fast mode
Standard mode
Fast mode
Standard mode
0
0
100
250
0.9
0.9
Data Hold Time
Data Setup Time
tHD:DAT
6
7
8
8
tSU:DAT
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
20 +0.1CB
20 +0.1CB
20 +0.1CB
20 +0.1CB
0.6
300
1000
300
Rise Time of Both SDA
and SCL Signals
Fall Time of Both SDA
and SCL Signals
tR
tF
300
Setup Time for STOP
tSU:STO
4.0
Capacitive Load for
Each Bus Line
Input Capacitance
CB
CI
400
pF
pF
8
5
NOTES:
1. All voltages are referenced to ground.
2. I/O pins of fast mode devices must not obstruct the SDA and SCL lines if VDD is switched off.
3. IDD specified with O.S. pin open.
4. IDD specified with VDD at 5.0V and VSDA, VSCL = 5.0V, 0°C to +70°C.
5. After this period, the first clock pulse is generated.
6. The maximum tHD:DAT has only to be met if the device does not stretch the low period (tLOW ) of the
SCL signal.
7. A fast mode device can be used in a standard mode system, but the requirement tSU:DAT ≥ 250ns must
then be met. This is automatically the case if the device does not stretch the low period of the SCL
signal. If such a device does stretch the low period of the SCL signal, it must output the next data bit
to the SDA line tR MAX +tSU:DAT = 1000 + 250 = 1250ns before the SCL line is released.
8. CB = Total capacitance of one bus line in pF.
9. Internal heating caused by O.S. loading causes the DS1775 to read approximately 0.5ºC higher if O.S.
is sinking the max rated current.
10. Contact the factory for operation requiring temperature readings greater than +120°C.
12 of 14
DS1775
Figure 5. Timing Diagram
ORDERING INFORMATION
PART
DS1775R+U
ADDRESS
TOP MARK
TEMP RANGE
PIN-PACKAGE
000
7750
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
-55°C to +125°C
DS1775R+T&R
DS1775R1+U
DS1775R1+T&R
DS1775R2+U
DS1775R2+T&R
DS1775R3+U
DS1775R3+T&R
DS1775R4+U
DS1775R4+T&R
DS1775R5+U
DS1775R5+T&R
DS1775R6+U
DS1775R6+T&R
DS1775R7+U
DS1775R7+T&R
001
010
011
100
101
110
111
7751
7752
7753
7754
7755
7756
7757
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
+Denotes a lead(Pb)-free/RoHS-compliant package.
U = Cut tape.
T&R = Tape and reel.
PACKAGE INFORMATION
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.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.
21-0057
LAND PATTERN NO.
90-0174
5 SOT23
U5+1
13 of 14
DS1775
REVISION HISTORY
REVISION
PAGES
CHANGED
DESCRIPTION
DATE
Updated the Absolute Maximum Ratings, Ordering Information, Package
Information sections
5/13
12, 13
14 of 14
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2013 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
相关型号：
DS1775R-U
Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Rectangular, 5 Pin, Surface Mount, SOT-23, 5 PIN
MAXIM
DS1775R-U
DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT, SOT-23, 5 PIN
ROCHESTER
DS1775R/T&R
Serial Switch/Digital Sensor, 12 Bit(s), 2Cel, Rectangular, 5 Pin, Surface Mount, SOT-23, 5 PIN
MAXIM
©2020 ICPDF网 联系我们和版权申明