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參數(shù)資料
| 型號： | MAX324CSA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision, Single-Supply, SPST Analog Switches |
| 中文描述： | DUAL 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO8 |
| 封裝： | 0.150 INCH, SOIC-8 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 153K |
| 代理商： | MAX324CSA |
M
±15kV ESD-Protected, 1μA, 3.0V to 5.5V, 250kbps,
RS -232 Transc eivers with AutoS hutdown
_______________________________________________________________________________________
7
RS -232 Rec eivers
The MAX3221E/MAX3223E/MAX3243E’s receivers con-
vert RS-232 signals to CMOS-logic output levels. All
receivers have inverting three-state outputs and can be
active or inactive. In shutdown (
FORCEOFF
= low) or in
AutoShutdown, the MAX3221E/MAX3223E’s receivers
are active (Table 1). Drive
EN
high to place the receiv-
er(s) in a high-impedance state. The MAX3243E’s
receivers are high-impedance when the part is in shut-
down (
FORCEOFF
= low).
The MAX3243E features an extra, always-active com-
plementary output (R2OUTB). R2OUTB monitors
receiver activity while the other receivers are high-
impedance. This allows Ring Indicator to be monitored
without forward biasing other devices connected to the
receiver outputs. This is ideal for systems where V
CC
drops to 0 in shutdown to accommodate peripherals
such as UARTs (Figure 2).
MAX3243E
I/O
CHIP
WITH
UART
CPU
RS-232
POWER-
MANAGEMENT
UNIT OR
KEYBOARD
CONTROLLER
FORCEOFF
FORCEON
INVALID
MAX3243E
T1OUT
R2OUTB
Tx
5k
UART
V
CC
T1IN
THREE-STATED
LOGIC
TRANSITION
DETECTOR
R2IN
PROTECTION
DIODE
R2OUT
FORCEOFF = GND
V
CC
TO
μ
P
Rx
PREVIOUS
RS-232
Tx
UART
SHDN = GND
V
CC
V
CC
GND
Rx
5k
a)
OLDER RS-232: POWERED-DOWN UART DRAWS CURRENT FROM ACTIVE
RECEIVER OUTPUT IN SHUTDOWN.
b)
NEW MAX3243E: IN SHUTDOWN, R2OUTB IS USED TOMONITOR EXTERNAL
DEVICES AND R2OUT IS THREE STATED, ELIMINATING A CURRENT PATH
THROUGH THE UART'S PROTECTION DIODE.
GND
PROTECTION
DIODE
I
I
Figure 1. Interface Under Control of PMU
Figure 2. The MAX3243E detects RS-232 activity when the
UART and interface are shut down.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3221E | Video/Imaging Fixed-Point Digital Signal Processor 548-FCBGA |
| MAX3221ECAE | Video/Imaging Fixed-Point Digital Signal Processor 548-FCBGA |
| MAX3223E | Video/Imaging Fixed-Point Digital Signal Processor 548-FCBGA |
| MAX3223ECAP | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX3223ECPP | Video/Imaging Fixed-Point Digital Signal Processor 548-FCBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX324CSA+ | 功能描述:模擬開關(guān) IC Precision Single Supply SPST RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX324CSA+T | 功能描述:模擬開關(guān) IC Precision Single Supply SPST RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX324CSA-T | 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX324CUA | 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX324CUA+ | 功能描述:模擬開關(guān) IC Precision Single Supply SPST RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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