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| 型号： | TC74A2-5.0VAT |
| 厂商： | Microchip Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 338K |
| 描述： | IC DGTL THERM SNSR 5.0V TO220-5 |
| 标准包装： | 50 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC（三角积分型），寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 |
| 供应商设备封装： | TO-220-5 |
| 包装： | 管件 |
| 其它名称： | TC74A25.0VAT |
TC74
DS21462C-page 2
?2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
1.1
Absolute Maximum Ratings
Supply Voltage (V
DD
) ............................................ +6V
Voltage On Any Pin .......(GND 0.3V) to (V
DD
+ 0.3V)
Current On Any Pin ..........................................?0 mA
Operating Temperature (T
A
)........-40癈 d T
A
d +125癈
Storage Temperature (T
STG
)..............-65癈 to +150癈
Junction Temperature (T
J
)................................+150癈
Notice: Stresses above those listed under "Maxi-
mum Ratings" may cause permanent damage to the
device. This is a stress rating only and functional oper-
ation of the device at those or any other conditions
above those indicated in the operation listings of this
specification is not implied. Exposure to maximum rat-
ing conditions for extended periods may affect device
reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, V
DD
= 3.3V for TC74AX-3.3VXX and
V
DD
= 5.0V for TC74AX-5.0VXX, -40癈 d T
A
d 125癈. Note 5
Parameters
Sym
Min
Typ
Max
Units
Conditions
Power Supply
Power-on Reset Threshold
V
POR
1.2
2.2
V
V
DD
Falling Edge or Rising
Edge
Supply Voltage
V
DD
2.7
5.5
V
Note 5
Operating Current
I
DD
200
350
礎 V
DD
= 5.5V, Note 1
Standby Supply Current
I
DD-STANDBY
5.0
10
礎 V
DD
= 3.3V
Serial Port Inactive, Note 4
Temperature-to-Bits Converter
Temperature Accuracy
T
ERR
-2.0
-3.0
?.0
+2.0
+3.0
癈
+25癈
A
< +85癈
0癈 < T
A
< +125癈
-40癈 < T
A
< 0癈
Conversion Rate
CR
4
8
SPS Note 2
Serial Port Interface
Logic Input High
V
IH
0.8 x V
DD
V
Logic Input Low
V
IL
0.2 x V
DD
V
SDA Output Low
V
OL
0.4
0.6
V
V
I
OL
= 3 mA
I
OL
= 6 mA, Note 3
Input Capacitance SDA, SCLK
C
IN
5.0
pF
I/O Leakage
I
LEAK
-1.0
0.1
1.0
礎
Serial Port AC Timing (C
LOAD
= 80 pF)
SMBus/I
2
C Clock Frequency
f
SMB
10
100
kHz
Low Clock Period
t
LOW
4.7
祍ec 10% to 10%
High Clock Period
t
HIGH
4.0
祍ec 90% to 90%
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 V
DD
or GND.
5: V
DD
= 3.3V for TC74AX -3.3 VXX. V
DD
= 5.0V for TC74AX -5.0 VXX. 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 V
DD
varies from the nominal value, accuracy will degrade 1癈/V
of V
DD
change.
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