- 您现在的位置：买卖IC网 > PDF目录13689 > MAX6323DUT46+T (Maxim Integrated Products)IC SUPERVISOR 4.63V SOT23-6 PDF资料下载
参数资料
| 型号： | MAX6323DUT46+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR 4.63V SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 4.63V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
μP Supervisory Circuits with Windowed
(Min/Max) Watchdog and Manual Reset
V TH
V CC
100ms (min)
100ms (min)
RESET
MR
Figure 5. RESET Timing Relationship
120ns (typ)
1 μ s (min)
20 μ s (typ)
falls below the preset threshold or when the manual
reset input ( MR) is asserted. The RESET output remains
asserted for at least 100ms after V CC has risen above
the reset threshold and MR is deasserted (Figure 5).
For noisy environments, bybass V CC with a 500pF (min)
capacitor to ensure correct operation.
The MAX6323 has a push-pull output stage, and the
MAX6324 utilizes an open-drain output. Connect a pull-
up resistor on the RESET output of the MAX6324 to any
supply up to +6V. Select a resistor value large enough
to register a logic low (see Electrical Characteristics)
and small enough to register a logic high while supply-
ing all input leakage currents and leakage paths con-
nected to the RESET line. A 10k ? pullup is sufficient in
most applications.
Manual Reset Input
Many μP-based products require manual reset capabil-
ity to allow an operator or external logic circuitry to initi-
ate a reset. The manual reset input ( MR ) can connect
directly to a switch without an external pullup resistor or
debouncing network. MR is internally pulled up to V CC
and, therefore, can be left unconnected if unused. MR
is designed to reject fast, negative-going transients
(typically 100ns pulses), and it must be held low for a
minimum of 1μs to assert the reset output (Figure 5). A
0.1μF capacitor from MR to ground provides additional
noise immunity. After MR transitions from low to high,
reset will remain asserted for the duration of the reset
timeout period, at least 100ms.
Applications Information
Negative-Going V CC Transients
The MAX6323/MAX6324 are relatively immune to short-
duration negative-going V CC transients (glitches),
which usually do not require the entire system to shut
down. Typically, 200ns large-amplitude pulses (from
ground to V CC ) on the supply will not cause a reset.
Lower amplitude pulses result in greater immunity.
Typically, a V CC transient that falls 100mV below the
reset threshold and lasts less than 20μs will not trigger
a reset (see Typical Operating Characteristics ). An
optional 0.1μF bypass capacitor mounted close to V CC
provides additional transient immunity.
Ensuring a Valid Reset Output
Down to V CC = 0V
When V CC falls below + 1.2V, the MAX6323 RESET out-
put 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 does not present a problem in most applications,
since most μPs and other circuitry are inoperative with
V CC below + 1.2V. However, in applications where
RESET must be valid down to 0, adding a pulldown
resistor to RESET causes any stray leakage currents to
flow to ground, holding RESET low (Figure 6). R1 ’s
value is not critical; 100k ? is large enough not to load
RESET and small enough to pull RESET to ground. This
scheme does not work with the open-drain output of the
MAX6324.
8
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| LM2735YSDX/NOPB | IC REG BOOST SEPIC ADJ 2.1A 6LLP |
| SC105-390 | INDUCTOR SMD 39UH 1.37A 2.52MHZ |
| LM2735YMYX/NOPB | IC REG BST SEPIC ADJ 2.1A 8EMSOP |
| MAX6323BUT26+T | IC SUPERVISOR 2.63V SOT23-6 |
| 4448R-34L | TOROID PWR HI CURRENT 300UH SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6323EUT23 | 制造商:Maxim Integrated Products 功能描述:UP SUPERVISORY CIRCUIT WITH WINDOWE - Cut Tape Product |
| MAX6323EUT23+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 |
| MAX6323EUT23-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 |
| MAX6323EUT26 | 制造商:Maxim Integrated Products 功能描述:UP SUPERVISORY CIRCUIT WITH WINDOWE - Cut Tape Product |
| MAX6323EUT26+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 |
发布紧急采购，3分钟左右您将得到回复。