DS1720S+T&R Maxim Integrated Products, DS1720S+T&R Datasheet - Page 13

• Manufacturer Part Number: DS1720S+T&R
• Description: Board Mount Temperature Sensors Digital Thermometer & Thermostat
• Manufacturer: Maxim Integrated Products

Specifications of DS1720S+T&R

• Full Temp Accuracy: +/- 2.5 C
• Package / Case: SOIC-8
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AC ELECTRICAL CHARACTERISTICS
PARAMETER
Temperature Conversion
Time
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise and Fall
CLK to
CLK High to I/O High-Z
Convert Pulse Width
Input Capacitance
I/O Capacitance
EEPROM
PARAMETER
EEPROM Write Cycle Time
EEPROM Writes
EEPROM Data Retention
NOTES:
1. All voltages are referenced to ground.
2. Logic one voltages are specified at a source current of 1 mA.
3. Logic zero voltages are specified at a sink current of 4 mA.
4. I
5. Measured at V
6. Measured at V
7. Load capacitance = 50 pF.
8. t
9. 250ns is the guaranteed minimum pulse width for a conversion to start; however, a smaller pulse
10. Drift data is based on a 1000hr stress test at +125°C with V
RST
RST
RST
width may start a conversion.
CWH
STBY
to CLK Setup
Inactive Time
Low to I/O High-Z
RST
,
must be 10 ms minimum following any write command that involves the E
I
CC
specified with DQ, CLK/
Hold
AC ELECTRICAL CHARACTERISTICS
IH
OH
= 2.0V or V
= 2.4V or V
SYMBOL
t
t
t
t
t
t
t
t
t
C
T
R,
CWH
t
CDH
CDD
t
t
t
CNV
CLK
CCH
CDZ
RDZ
C
DC
CH
IL
CL
CC
TC
I/O
OL
t
I
F
= 0.6V.
= 0.4V.
CONV
CONDITIONS
-55°C to +55°C
-55°C to +55°C
250 ns
MIN
285
285
100
125
DC
= V
35
40
40
DD
13 of 14
, and
RST
TYP
(-55°C to +125°C; V
(-55°C to +125°C; V
10
5
= GND.
DD
MIN
50k
= 5.5V.
10
500 ms
MAX
1.75
750
150
500
50
50
TYP
UNITS
2
DD
MHz
DD
memory.
ms
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
=2.7V to 5.5V)
MAX
=2.7V to 5.5V)
10
NOTES
UNITS
5, 6, 7
Writes
Years
5, 8
DS1720
ms
5
5
5
5
5
5
5
5
5
9