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参数资料
| 型号： | MAX6467US25D7-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-MSOP T&R |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | TO-253, SOT-143, 4 PIN |
| 文件页数： | 9/12页 |
| 文件大小： | 379K |
| 代理商： | MAX6467US25D7-T |
MAX6467/MAX6468
Applications Information
Falling VCC Transients
In addition to issuing a reset to the P during power-up,
power-down, and brownout conditions, the MAX6467/
MAX6468 are relatively immune to short-duration falling
VCC transients (glitches). The Typical Operating
Characteristics section shows the Maximum Transient
Duration vs. VCC Overdrive for which the MAX6467/
MAX6468 do not generate a reset pulse. This graph was
generated using a falling pulse applied to VCC starting
above the actual reset threshold and ending below the
threshold by the magnitude indicated (VCC Overdrive).
The graph indicates the typical maximum pulse width a
falling VCC transient can have without initiating a reset
pulse. As the magnitude of the transient increases (goes
farther below the reset threshold), the maximum allowable
pulse width decreases. A 0.1F bypass capacitor from
VCC to GND provides additional transient immunity.
Ensuring a Valid RESET Output Down
to VCC = 0V
The MAX6467/MAX6468 guarantee proper operation
down to VCC = +1V. In applications that require valid
reset levels down to VCC = 0V, a pulldown resistor to
active-low outputs (MAX6468 only, Figure 3) ensures
that RESET remains valid while the RESET output can
no longer sink current. This scheme does not work with
the open-drain outputs of the MAX6467. Ensure that the
resistor value used does not overload the RESET output
when VCC is above the reset threshold. For most appli-
cations, use 100k
to 1M.
Microprocessor Supervisory Reset Circuits
with Edge-Triggered, One-Shot Manual Reset
6
_______________________________________________________________________________________
RESET TIMEOUT SUFFIX
VCC RESET TIMEOUT PERIOD
(min/max) (ms)
MR TIMEOUT PERIOD
(min/max) (ms)
MR RISING DEBOUNCE PERIOD
(min/max) (ms)
D3
150/300
D7
1200/2400
150/300
Reset Timeout Delay*
*Additional reset timeout options may be available. Contact factory for availability.
MAX6468
VCC
GND
RESET
R1
100k
Figure 3. RESET Valid to VCC = 0V
Chip Information
TRANSISTOR COUNT: 748
PROCESS: BiCMOS
1.5k
VCC
MR ONE-SHOT/
DEBOUNCE
RESET
TIMEOUT
PERIOD
RESET
OUTPUT
VCC
1.23V
VCC
MR
RESET
GND
MAX6467
MAX6468
Figure 2. Functional Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6467US26D3-T | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-MSOP T&R |
| MAX6467US26D7-T | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 14-SOIC T&R |
| MAX6467US27D3-T | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 14-SOIC T&R |
| MAX6467US28D3-T | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R |
| MAX6467US28D7-T | ±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6467US26D3 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Rail/Tube |
| MAX6467US26D3+ | 制造商:Rochester Electronics LLC 功能描述: |
| MAX6467US26D3+T | 功能描述:监控电路 MPU Supervisory 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 |
| MAX6467US26D3-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 |
| MAX6467US26D7 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Rail/Tube |
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