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参数资料
| 型号： | MAX6741XKLTD3+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU SC-70-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 2 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 150 ms |
| 电压 - 阀值： | 3.075V，4.625V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSSOP（5 引线），SC-88A，SOT-353 |
| 供应商设备封装： | SC-70-5 |
| 包装： | 带卷 (TR) |
Low-Power Dual-/Triple-Voltage SC70 μP
Supervisory Circuits
The MAX6741/MAX6744 offer a V CC 1 POK (POK1) ideal
for V CC 1-to-V CC 2 sequencing. POK1 remains low as
long as V CC 1 is below its V TH 1 threshold. When V CC 1
exceeds V TH 1 for the POK1 timeout period (t POKP ), the
open-drain POK1 output is deasserted. The POK1 output
can then enable the V CC 2 power supply (use an external
POK1 pullup resistor). RESET is deasserted when both
V CC 1 and V CC 2 remain above their selected thresholds
for the reset timeout period (t RP ). The POK1 output can
be used for I/O before core or core before I/O sequenc-
ing, depending on the selected V CC 1/V CC 2 thresholds.
See the Typical Application Circuit and Figure 1.
Monitoring a Negative Voltage
The power-fail comparator can be used to monitor a
negative supply voltage using the circuit shown in
Figure 4. When the negative supply is valid, PFO is low.
When the negative supply voltage drops, PFO goes
high. The circuit ’s accuracy is affected by the PFI
threshold tolerance, V CC , R1, and R2.
Transient Immunity
The MAX6736 –MAX6745 supervisors are relatively
immune to short-duration falling V CC transients (glitch-
es). It is usually undesirable to reset the μP when V CC
experiences only small glitches. The Typical Operating
Characteristics show Maximum V CC 1/V CC 2 Transient
Duration vs. Reset Threshold Overdrive, for which reset
pulses are not generated. The graph shows the maxi-
mum pulse width that a falling V CC transient might typi-
cally have without causing a reset pulse to be issued.
As the amplitude of the transient increases, the maxi-
mum allowable pulse width decreases. A 0.1μF bypass
capacitor mounted close to the V CC pin provides addi-
tional transient immunity.
Chip Information
TRANSISTOR COUNT: 249
PROCESS: BiCMOS
Functional Diagram
V CC 1
MAX6736–
MAX6745
PFO
DELAY
V CC 1
V CC 2
POK1
RSTIN/PFI
RESET
TIMEOUT
PERIOD
RESET
OUTPUT
RESET
V CC 2
V CC 1
MR
PULLUP
0.488V
V CC 1
1.23V
MR
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6741XKLTD7 | 制造商:Maxim Integrated Products 功能描述:LOW-POWER DUAL/TRIPLE-VOLTAGE SC70 - Rail/Tube |
| MAX6741XKLTD7+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 |
| MAX6741XKLTD7-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 |
| MAX6741XKMRD3 | 制造商:Maxim Integrated Products 功能描述:LOW-POWER DUAL/TRIPLE-VOLTAGE SC70 - Rail/Tube |
| MAX6741XKMRD3+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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