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TC74A3-50VCT 数据表(PDF) 4 Page - Microchip Technology

部件名 TC74A3-50VCT
功能描述  Tiny Serial Digital Thermal Sensor
Download  16 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC74A3-50VCT 数据表(HTML) 4 Page - Microchip Technology

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TC74
DS21462B-page 4
© 2002 Microchip Technology Inc.
TC74 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: VDD =3.3V or 5.0V (Note 5),-40°C ≤ TA ≤ 125°C, CL = 80pF unless otherwise noted.
Serial Port AC Timing
Symbol
Parameter
Min
Typ.
Max
Unit
Test Conditions
fSMB
SMBus Clock Frequency
10
100
kHz
tLOW
Low Clock Period
4.7
µsec
10% to 10%
tHIGH
High Clock Period
4
µsec
90% to 90%
tR
tF
SMBus Rise Time
SMBus Fall Time
1000
300
nsec
nsec
10% to 90%
90% to10%
tSU(START)
START Condition Setup Time
(for repeated START Condition)
4—
µsec
90% SCLK to 10% SDA
tH(START)
START Condition Hold Time
4
µsec
tSU-DATA
Data In Setup Time
1000
nsec
tH-DATA
Data In Hold Time
1250
nsec
tSU(STOP)
STOP Condition Setup Time
4
µsec
tIDLE
Bus Free Time Prior to New Tran-
sition
4.7
µsec
tPOR
Power-on Reset Delay
500
µsec
VDD ≥ VPOR (Rising Edge)
Note
1:
Operating current is an average value integrated over multiple conversion cycles. Transient current may exceed this specification.
2:
Maximum ensured conversion time after Power-on Reset (POR to DATA_RDY) is 250 msec.
3:
Output current should be minimized for best temperature accuracy. Power dissipation within the TC74 will cause self-heating and
temperature drift error.
4:
SDA and SCLK must be connected to VDD or GND.
5:
VDD = 3.3V for TC74X -3.3VCT. VDD = 5.0V for TC74X -5.0VCT. All part types of the TC74 will operate properly over the wider power
supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage. As VDD varies from
the nominal value, accuracy will degrade 1°C/V of VDD change.


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