DS75LXU+T&R Maxim Integrated Products, DS75LXU+T&R Datasheet - Page 3

• Manufacturer Part Number: DS75LXU+T&R
• Description: IC THERMOMETER/STAT DIG 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of DS75LXU+T&R

• Function: Thermometer, Thermostat
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC ELECTRICAL CHARACTERISTICS (continued)
(1.7V ≤ V
PIN DESCRIPTION
SCL Frequency
Bus Free Time Between
a STOP and START
Condition
START and Repeated
START Hold Time from
Falling SCL
Low Period of SCL
High Period of SCL
Repeated START
Condition Setup Time to
Rising SCL
Data-Out Hold Time from
Falling SCL
Data-In Setup Time to
Rising SCL
Rise Time of SDA and
SCL (Receive)
Fall Time of SDA and
SCL (Receive)
Spike Suppression
Filter Time (Deglitch
Filter)
STOP Setup Time to
Rising SCL
Capacitive Load for Each
Bus Line
Input Capacitance
Serial Interface Reset
Time
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Note 11:
Note 12:
PIN
1
2
3
4
5
6
7
8
PARAMETER
DD
V
recommended.
Internal heating caused by O.S. loading causes the DS75LX to read approximately 0.5°C higher if O.S. is sinking the max
rated current.
All voltages are referenced to ground.
I
I
Address pins A0, A1, A2 are directly connected to V
See the timing diagram (Figure 1). All timing is referenced to 0.9 x V
After this period, the first clock pulse is generated.
The DS75LX provides an internal hold time of at least 75ns on the SDA signal to bridge the undefined region of SCL's falling
edge.
For example, if C
This timeout applies only when the DS75LX is holding SDA low. Other devices can hold SDA low indefinitely and the DS75LX
will not reset.
The DS75LX is available with timeout feature disabled upon special order. Contact Factory.
DD
DD
≤ 3.7V, T
DD
specified with O.S. pin open and A0–A2 pins grounded.
and address leakage specified with V
NAME
must be decoupled with a high-quality 0.1µF bypass capacitor. X5R or X7R ceramic surface-mount capacitors are
GND
SDA
O.S.
SCL
V
A
A
A
DD
2
1
0
A
= -55°C to +125°C.)
B
= 300pF, then t
Data Input/Output for 2-Wire Serial Communication Port (Open Drain)
Clock Input for 2-Wire Serial Communication Port
Thermostat Output Open Drain
Ground
Address Input
Address Input
Address Input
Supply Voltage. +1.7V to +3.7V supply pin. V
capacitor to GND. 0.1µF X5R or X7R ceramic SMT caps recommended.
SYMBOL
t
t
t
t
t
t
TIMEOUT
HD:STA
HD:DAT
SU:DAT
SU:STO
SU:STA
t
t
f
t
HIGH
LOW
C
t
SCL
BUF
C
t
t
SS
R
F
B
I
B
R
[min] = t
DS75LX: Digital Thermometer and Thermostat with Extended Addressing
(Note 7)
(Notes 7, 8)
(Note 7)
(Note 7)
(Note 7)
(Notes 7, 9)
(Note 7)
(Notes 7, 10)
(Notes 7, 10)
(Note 7)
SDA time low
(Notes 11, 12)
DD
F
at 3.0V and SDA, SCL = 3.0V at 0°C to +70°C.
[min] = 50ns.
CONDITIONS
DD
, V
3 of 13
SS
, or floating with less than 50pF capacitive load.
FUNCTION
DD
and 0.1 x V
0.1C
0.1C
20 +
20 +
MIN
600
600
100
600
1.3
1.3
0.6
75
DD
DD
0
0
.
B
B
must have an external bypass
B
B
TYP
5
MAX
400
300
300
400
325
0.9
50
UNITS
kHz
ms
pF
pF
µs
ns
µs
µs
ns
µs
ns
ns
ns
ns
ns