MAX6337US17D3-T 查看數據表（PDF） - Maxim Integrated

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MAX6337US17D3-T

4-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits with Manual Reset

Maxim Integrated 

4-Pin, Ultra-Low-Voltage, Low-Power

µP Reset Circuits with Manual Reset

VCC

MAX6336

MR

RESET

100k

(a)

GND

VCC

MAX6335

MR

RESET

(b)

GND

100k*

Table 1. Factory-Trimmed Reset

Thresholds*

RESET

THRESHOLD

SUFFIX

MAX633_US25D_

MAX633_US24D_

MAX633_US23D_

MAX633_US22D_

MAX633_US21D_

MAX633_US20D_

MAX633_US19D_

MAX633_US18D_

MAX633_US17D_

MAX633_US16D_

TA = +25°C TA = -40°C to +125°C

MIN TYP MAX MIN

MAX

2.46 2.50 2.55 2.43

2.58

2.36 2.40 2.44 2.33

2.47

2.26 2.30 2.34 2.23

2.37

2.16 2.20 2.24 2.13

2.27

2.06 2.10 2.14 2.04

2.16

1.96 2.00 2.04 1.94

2.06

1.87 1.90 1.93 1.84

1.96

1.77 1.80 1.83 1.75

1.85

1.67 1.70 1.73 1.65

1.75

1.57 1.60 1.63 1.55

1.65

* Factory-trimmed reset thresholds are available in approximately

100mV increments, with a ±1.8% room-temperature variance.

*ASSUMES HIGH-Z RESET INPUT TO THE µP

Figure 2. Ensuring Reset Valid down to VCC = 0

(Figure 2a). The pull-down resistor value is not critical;

100kΩ is large enough not to load RESET, and small

enough to pull it low. For the MAX6335, where RESET

must be valid to VCC = 0, a 100kΩ pull-up resistor

between RESET and VCC will hold RESET high when

VCC falls below 0.7V (Figure 2b).

Since the MAX6337 has an open-drain, active-low out-

put, it typically uses a pull-up resistor. With this device,

RESET will most likely not maintain an active condition,

but will drift to a non-active level due to the pull-up

resistor and the reduced sinking capability of the open-

drain device. Therefore, this device is not recommend-

ed for applications where the RESET pin is required to

be valid down to VCC = 0.

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