DS1621 Maxim Integrated Products, DS1621 Datasheet - Page 16

• Manufacturer Part Number: DS1621
• Description: IC THERMOMETER/STAT DIG 8-DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1621

• 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: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Full Temp Accuracy: +/- 2 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: Contains lead / RoHS non-compliant

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 V
3. I
4. I
5. After this period, the first clock pulse is generated.
6. A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the
7. The maximum t
8. A fast mode device can be used in a standard mode system, but the requirement t
9. C
10. Writing to the nonvolatile memory should only take place in the 0°C to 70°C temperature range.
TIMING DIAGRAM
V
SCL signal.
then be met. This will automatically be 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 t
CC
CC
B
IH MIN
—total capacitance of one bus line in pF.
specified with T
specified with V
of the SCL signal) in order to bridge the undefined region of the falling edge of SCL.
HD:DAT
OUT
CC
has only to be met if the device does not stretch the LOW period (t
at 5.0V and SDA, SCL = 5.0V, 0°C to 70°C.
pin open.
RMAX
+ t
SU:DAT
= 1000 + 250 = 1250ns before the SCL line is released.
16 of 16
DD
is switched off.
SU:DAT
>250ns must
LOW
) of the