Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
CC
1 = V
CC
2 = +1.2V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Supply Voltage (Note 2)
Supply Current
SYMBOL
V
CC
1,
V
CC
2
I
CC
1 +
I
CC
2
CONDITIONS
T
A
= 0°C to +70°C
TA
= -40°C to +85°C
VCC1 = 5.5V, VCC2 = 3.6V, all I/O pins
open
MAX63_ _L_
MAX63_ _M_
MAX63_ _T_
V
CC
1 Threshold (Note 3)
V
TH
1
MAX63_ _S_
MAX63_ _U_
MAX63_ _R_
MAX63_ _ _T
MAX63_ _ _S
MAX63_ _ _R
V
CC
2 Threshold (Note 3)
V
TH
2
MAX63_ _ _Z
MAX63_ _ _Y
MAX63_ _ _W
MAX63_ _ _V
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
MIN
1.0
1.2
20
4.54
4.5
4.3
4.25
3.03
3.00
2.88
2.85
2.74
2.70
2.58
2.55
3.03
3.00
2.88
2.85
2.58
2.55
2.28
2.25
2.16
2.13
1.64
1.62
1.55
1.53
1.58
1.67
2.19
2.32
2.63
2.93
3.08
2.63
2.78
2.93
3.08
4.38
4.63
TYP
MAX
5.5
5.5
50
4.72
4.75
4.46
4.50
3.14
3.15
2.98
3.00
2.82
2.85
2.68
2.70
3.14
3.15
2.98
3.00
2.68
2.70
2.35
2.38
2.22
2.25
1.70
1.71
1.61
1.62
V
V
UNITS
V
µA
www.maximintegrated.com
Maxim Integrated │ 2
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
Electrical Characteristics (continued)
(V
CC
1 = V
CC
2 = +1.2V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Reset Threshold Tempco
Reset Threshold Hysteresis
V
CC
to Reset Delay
Reset Timeout Period
t
RP
100mV overdrive
V
CC
1 > V
TH
1 (MAX), V
CC
2 > V
TH
2 (MAX)
V
CC
1 or V
CC
2 ≥ 2.7V, I
SINK
= 1.2mA
V
CC
1 or V
CC
2 ≥ 4.5V, I
SINK
= 3.2mA
RESET
Output Voltage Low
V
OL
V
CC
1 or V
CC
2 ≥ 1V, I
SINK
= 50µA,
T
A
= 0°C to +70°C
V
CC
1 or V
CC
2 ≥ 1.2V, ISINK = 50µA;
T
A
= -40°C to +85°C
(_W, _V versions only),
V
CC
1 > V
TH
1
(MAX)
,
V
CC
2 > V
TH
2
(MAX)
V
OH
(_Y versions only),
V
CC
1 > V
TH
1
(MAX)
,
V
CC
2 > V
TH
2
(MAX)
(_T, _S, _R versions only),
V
CC
1 > V
TH
1
(MAX)
,
V
CC
2 > V
TH
2
(MAX)
WATCHDOG INPUT (MAX6358/MAX6359/MAX6360)
Watchdog Timeout Period
WDI Pulse Width (Note 4)
WDI Input Voltage (Note 5)
WDI Input Current (Note 6)
MANUAL RESET INPUT
V
IL
MR
Input Voltage
V
IH
V
IL
V
IH
MAX63_ _L_, MAX63_ _M_, V
CC
1 > V
TH
1
(MAX)
MAX63_ _L_, MAX63_ _M_, V
CC
1 > V
TH
1
(MAX)
MAX63_ _ _Y, V
CC
1 > V
TH
1
(MAX)
MAX63_ _ _Y, V
CC
1 > V
TH
1
(MAX)
0.7 x V
CC
2.3
0.3 x V
CC
0.8
V
t
WD
t
WDI
V
IL
V
IH
First timeout period after reset
After first WDI falling edge
V
IL
= 0.4V, V
IH
= 0.8 x V
CC
V
CC
1 = 5V
V
WDI
= V
CC
V
WDI
= 0
-20
25.6
1.6
50
0.3 x V
CC
0.65 x V
CC
120
-15
160
46.4
2.9
72.0
4.5
s
ns
V
µA
I
SOURCE
= 350µA
0.8 x V
CC
100
SYMBOL
ΔV
TH
/°C
CONDITIONS
MIN
TYP
20
V
TH
/500
20
180
280
0.3
0.4
0.3
0.3
V
MAX
UNITS
ppm/°C
V
µs
ms
RESET
Output-Voltage High
(MAX6351/MAX6353/MAX6354/
MAX6356/MAX6357/MAX6359/
MAX6360 only)
I
SOURCE
= 500µA
0.8 x V
CC
V
I
SOURCE
= 800µA
V
CC
- 1.5
www.maximintegrated.com
Maxim Integrated │
3
MAX6351–MAX6360
Dual/Triple-Voltage
μP Supervisory Circuits
Electrical Characteristics (continued)
(V
CC
1 = V
CC
2 = +1.2V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
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射频识别(Radio Frequency Identification，RFID)技术是一种利用无线射频通信实现的非接触式自动识别技术，与目前广泛采用的条形码技术相比，RFID具有容量大、识别距离远、穿透能力强、抗污性强等特点。RFID技术已经发展得比较成熟并获得了大规模商用，但超高频RFID技术相对滞后。本文分析了射频芯片nRF9E5的功能特性，并将其用于RFID系统中，设计了一套有源超高频(...[详细]
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