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参数资料
| 型号： | MAX6711TEXS-T10 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Industrial Control IC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | SC-70, 4 PIN |
| 文件页数： | 6/8页 |
| 文件大小： | 145K |
| 代理商： | MAX6711TEXS-T10 |
MAX6711L/M/R/S/T/Z,
MAX6712L/M/R/S/T/Z,
MAX6713L/M/R/S/T/Z maximum allowable pulse width decreases. Typically, for
the MAX671_L and MAX671_M, a VCC transient that
goes 100mV below the reset threshold and lasts 20s or
less will not cause a reset pulse. A 0.1F bypass capaci-
tor mounted as close as possible to the VCC pin provides
additional transient immunity.
Ensuring a Valid Reset Output
Down to VCC = 0
When VCC falls below 1V, the MAX6711 RESET output
no longer sinks current—it becomes an open circuit.
Therefore, high-impedance CMOS-logic inputs con-
nected to RESET can drift to undetermined voltages.
This presents no problem in most applications since
most P and other circuitry is inoperative with VCC
below 1V. However, in applications where RESET must
be valid down to 0, adding a pull-down resistor to
RESET causes any stray leakage currents to flow to
ground, holding RESET low (Figure 2). R1’s value is not
critical; 100k
is large enough not to load RESET and
small enough to pull RESET to ground.
A 100k
pull-up resistor to VCC is also recommended
for the MAX6712 if RESET is required to remain valid for
VCC < 1V.
Interfacing to Ps with
Bidirectional Reset Pins
Since the RESET output on the MAX6713 is open-drain,
this device interfaces easily with Ps that have bidirec-
tional reset pins, such as the Motorola 68HC11.
Connecting the P supervisor’s RESET output directly
to the P’s RESET pin with a single pull-up resistor
allows either device to assert reset (Figure 3).
MAX6713 Open-Drain RESET Output
Allows Use with Multiple Supplies
Generally, the pull-up connected to the MAX6713 will
connect to the supply voltage that is being monitored at
the IC’s VCC pin. However, some systems may use the
open-drain output to level-shift from the monitored sup-
ply to reset circuitry powered by some other supply
(Figure 4). Note that as the MAX6713’s VCC decreases
below 1V, so does the IC’s ability to sink current at
RESET. Also, with any pull-up, RESET will be pulled
high as VCC decays toward 0. The voltage where this
occurs depends on the pull-up resistor value and the
voltage to which it is connected.
Benefits of Highly Accurate
Reset Threshold
Most P supervisor ICs have reset threshold voltages
between 5% and 10% below the value of nominal sup-
ply voltages. This ensures a reset will not occur within
5% of the nominal supply, but will occur when the sup-
ply is 10% below nominal.
When using ICs rated at only the nominal supply ±5%,
a zone of uncertainty where the supply is between 5%
and 10% low, and where the reset may or may not be
asserted is left.
The MAX671_L/T/Z use highly accurate circuitry to
ensure that reset is asserted close to the 5% limit, and
long before the supply has declined to 10% below
nominal.
4-Pin SC70 Microprocessor Reset Circuits
with Manual Reset Input
6
_______________________________________________________________________________________
RESET
GND
RESET
INPUT
RPULLUP
MAX6713
5V SYSTEM
GND
VCC
+3.3V
+5.0V
VCC
Figure 4. MAX6713 Open-Drain RESET Output Allows Use with
Multiple Supplies
RESET
GND
MR
RESET
INPUT
MAX6713
MOTOROLA
68HCXX
P
GND
VCC
Figure 3. Interfacing to Ps with Bidirectional Reset I/O
TRANSISTOR COUNT: 380
___________________Chip Information
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6711ZEXS-T | Industrial Control IC |
| MAX6711ZEXS-T10 | Industrial Control IC |
| MAX6712LEXS-T | Industrial Control IC |
| MAX6712LEXS-T10 | Industrial Control IC |
| MAX6712MEXS-T | Industrial Control IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6711ZEXS | 制造商:Maxim Integrated Products 功能描述:4-PIN SC70 MICROPROCESSOR RESET CIR - Cut Tape Product |
| MAX6711ZEXS+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.32V 12UA 4PIN SC-70 - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6711ZEXS+T | 功能描述:监控电路 4-Pin MPU Reset Circuit RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6711ZEXS+T10 | 功能描述:监控电路 4-Pin MPU Reset Circuit RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6711ZEXS-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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