MAX6314US44D2 Datasheet, PDF (2/8 Pages) Maxim Integrated Products – 68HC11/Bidirectional-Compatible muP Reset Circuit

68HC11/Bidirectional-Compatible
µP Reset Circuit
ABSOLUTE MAXIMUM RATINGS
V_CC ........................................................................-0.3V to +6.0V
All Other Pins..............................................-0.3V to (V_CC + 0.3V)
Input Current (V_CC) .............................................................20mA
Output Current (RESET)......................................................20mA
Continuous Power Dissipation (T_A = +70°C)
SOT143 (derate 4mW/°C above +70°C) .......................320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Rate of Rise (V_CC) ...........................................................100V/µs
Lead Temperature (soldering, 10sec) .............................+300°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 = +2.5V to +5.5V, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Voltage Range
V_CC Supply Current
Reset Threshold (Note 1)
Reset Threshold Tempco
V_CC to Reset Delay
Reset Timeout Period
V_CC
I_CC
V_TH
∆V_TH/°C
t_RP
T_A = 0°C to +70°C
V_CC = 5.5V, no load
V_CC = 3.6V, no load
T_A = +25°C
T_A = -40°C to +85°C
V_CC = falling at 1mV/µs
MAX6314US_ _D1-T
MAX6314US_ _D2-T
MAX6314US_ _D3-T
MAX6314US_ _D4-T
1.0
V_TH - 1.8%
V_TH - 2.5%
1
20
140
1120
5
4
V_TH
60
35
1.4
28
200
1570
5.5
12
10
V_TH + 1.8%
V_TH + 2.5%
2
40
280
2240
V
µA
V
ppm/°C
µs
ms
MANUAL RESET INPUT
MR Input Threshold
MR Minimum Input Pulse
MR Glitch Rejection
MR to Reset Delay
MR Pullup Resistance
V_IL
V_IH
V_TH > 4.0V
V_IL
V_IH
V_TH < 4.0V
0.8
0.3 x V_CC
1
2.4
V
0.7 x V_CC
µs
100
ns
500
ns
32
63
100
kΩ
V_CC > 4.25V, I_SINK = 3.2mA
0.4
RESET Output Voltage
V_OL
V_CC > 2.5V, I_SINK = 1.2mA
V_CC > 1.2V, I_SINK = 0.5mA
0.3
V
0.3
V_CC > 1.0V, I_SINK = 80µA
0.3
RESET INTERNAL PULLUP
Transition Flip-Flop Setup Time (Note 2) t_S
400
ns
Active Pullup Enable Threshold
RESET Active Pullup Current
RESET Pullup Resistance
V_CC = 5V
V_CC = 5V
0.4
0.9
V
20
mA
4.2
4.7
5.2
kΩ
RESET Output Rise Time
(Note 3)
t_R
V_CC = 3V
V_CC = 5V
C_LOAD = 120pF
C_LOAD = 250pF
C_LOAD = 200pF
C_LOAD = 400pF
333
666
ns
333
V
666
Note 1: The MAX6314 monitors V_CC through an internal, factory-trimmed voltage divider that programs the nominal reset threshold.
Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Ordering and Marking Information).
Note 2: This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.
Note 3: Measured from RESET V_OL to (0.8 x V_CC), R_LOAD = ∞.
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