MAX6319LHUK33BX-T

更新时间： 2024-01-19 09:37:04

品牌	Logo	应用领域
美信 - MAXIM		模拟IC
页数	文件大小	规格书
14页	205K
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MAX6319LHUK33BX-T 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SOT-23
包装说明：	LSSOP, TSOP5/6,.11,37	针数：	5
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.22
其他特性：	MANUAL RESET INPUT	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	R-PDSO-G5
JESD-609代码：	e0	长度：	2.9 mm
湿度敏感等级：	1	信道数量：	1
功能数量：	1	端子数量：	5
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSSOP
封装等效代码：	TSOP5/6,.11,37	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	245
电源：	3/5 V	认证状态：	Not Qualified
座面最大高度：	1.45 mm	子类别：	Power Management Circuits
最大供电电流 (Isup)：	0.012 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	1 V	标称供电电压 (Vsup)：	3 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn85Pb15)	端子形式：	GULL WING
端子节距：	0.95 mm	端子位置：	DUAL
阈值电压标称：	+3.3V	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	1.625 mm	Base Number Matches：	1

MAX6319LHUK33BX-T 数据手册

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5-Pin µP Supervisory Circuits with

Watchdog and Manual Reset

scratch. If, on the other hand, RESET is high after a

delay of two external-clock cycles, the processor

knows that it caused the reset itself and can jump to a

different vector and use stored-state information to

determine what caused the reset.

RESET

Bidirectional

Output

The MAX6316M/MAX6318MH/MAX6319MH are designed

to interface with µPs that have bidirectional reset pins,

such as the Motorola 68HC11. Like an open-drain output,

these devices allow the µP or other devices to pull the

bidirectional reset (RESET) low and assert a reset condi-

tion. However, unlike a standard open-drain output, it

includes the commonly specified 4.7k pullup resistor

with a P-channel active pullup in parallel.

A problem occurs with faster µPs; two external-clock

cycles are only 500ns at 4MHz. When there are several

devices on the reset line, and only a passive pullup resis-

tor is used, the input capacitance and stray capacitance

can prevent RESET from reaching the logic high state (0.8

This configuration allows the MAX6316M/MAX6318MH/

MAX6319MH to solve a problem associated with µPs

that have bidirectional reset pins in systems where sev-

eral devices connect to RESET (Figure 3). These µPs

can often determine if a reset was asserted by an exter-

nal device (i.e., the supervisor IC) or by the µP itself

(due to a watchdog fault, clock error, or other source),

and then jump to a vector appropriate for the source of

the reset. However, if the µP does assert reset, it does

not retain the information, but must determine the

cause after the reset has occurred.

V ) in the time allowed. If this happens, all resets will

be interpreted as external. The µP output stage is guaran-

teed to sink 1.6mA, so the rise time can not be reduced

considerably by decreasing the 4.7k internal pullup

resistance. See Bidirectional Pullup Characteristics in the

Typical Operating Characteristics.

The MAX6316M/MAX6318MH/MAX6319MH overcome

this problem with an active pullup FET in parallel with the

4.7k resistor (Figures 4 and 5). The pullup transistor

holds RESET high until the µP reset I/O or the supervisory

circuit itself forces the line low. Once RESET goes below

The following procedure describes how this is done in

the Motorola 68HC11. In all cases of reset, the µP pulls

RESET low for about four external-clock cycles. It then

releases RESET, waits for two external-clock cycles,

then checks RESET’s state. If RESET is still low, the µP

concludes that the source of the reset was external

and, when RESET eventually reaches the high state, it

jumps to the normal reset vector. In this case, stored-

state information is erased and processing begins from

, a comparator sets the transition edge flip-flop, indi-

PTH

cating that the next transition for RESET will be low to

high. When RESET is released, the 4.7k resistor pulls

RESET up toward V . Once RESET rises above V

PTH

but is below (0.85 x V ), the active P-channel pullup

turns on. Once RESET rises above (0.85 x V ) or the

2µs one-shot times out, the active pullup turns off. The

parallel combination of the 4.7k pullup and the

WDI*

MR**

4.7k

68HC11

RESET

CIRCUITRY

RESET

CIRCUITRY

RESET***

STRAY

MAX6316M

MAX6318MH

MAX6319MH

OTHER DEVICES

***

MAX6316M/MAX6318MH

MAX6316M/MAX6319MH

ACTIVE-HIGH PUSH/PULL MAX6318MH/MAX6319MH

Figure 3. MAX6316M/MAX6318MH/MAX6319MH Supports Additional Devices on the Reset Bus

_______________________________________________________________________________________

1...4 5 678 9 10...14

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与MAX6319LHUK33BX-T相关器件

型号	品牌	描述	获取价格	数据表
MAX6319LHUK33C+T	MAXIM	Power Supply Support Circuit, Fixed, 1 Channel, +3.3VV, PDSO5, SOT-23, 5 PIN	获取价格
MAX6319LHUK33C-T	MAXIM	Versatile Customizable SOT Reset + Watchdog ICs Offer 3224 Unique Options[Japanese]	获取价格
MAX6319LHUK33D-T	MAXIM	Versatile Customizable SOT Reset + Watchdog ICs Offer 3224 Unique Options	获取价格
MAX6319LHUK34A-T	MAXIM	Versatile Customizable SOT Reset + Watchdog ICs Offer 3224 Unique Options[Japanese]	获取价格
MAX6319LHUK34B-T	MAXIM	Versatile Customizable SOT Reset + Watchdog ICs Offer 3224 Unique Options	获取价格
MAX6319LHUK34BW-T	MAXIM	Analog IC	获取价格

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