参数资料
| 型号： | ICL3224ECAZ |
| 厂商： | Intersil |
| 文件页数： | 20/20页 |
| 文件大小： | 0K |
| 描述： | IC 2DRVR/2RCVR RS232 3V 20-SSOP |
| 标准包装： | 660 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
9
The ICL3244E inverting receivers disable during forced
(manual) powerdown, but not during automatic powerdown
(see Table 2). Conversely, the monitor receiver remains
active even during manual powerdown making it extremely
useful for Ring Indicator monitoring. Standard receivers
driving powered down peripherals must be disabled to
prevent current flow through the peripheral’s protection
diodes (see Figures 2 and 3). This renders them useless for
wake up functions, but the corresponding monitor receiver
can be dedicated to this task as shown in Figure 3.
TABLE 2. POWERDOWN LOGIC TRUTH TABLE
RCVR OR
XMTR
EDGE
WITHIN 30
SEC?
FORCEOFF
INPUT
FORCEON
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
(NOTE 3)
ROUTB
OUTPUTS
RS-232
LEVEL
PRESENT
AT
RECEIVER
INPUT?
INVALID
OUTPUT
MODE OF OPERATION
ICL3224E, ICL3226E
NO
H
Active
N.A.
NO
L
Normal Operation (Enhanced
Auto Powerdown Disabled)
NO
H
Active
N.A.
YES
H
YES
H
L
Active
N.A.
NO
L
Normal Operation (Enhanced
Auto Powerdown Enabled)
YES
H
L
Active
N.A.
YES
H
NO
H
L
High-Z
Active
N.A.
NO
L
Powerdown Due to Enhanced
Auto Powerdown Logic
NO
H
L
High-Z
Active
N.A.
YES
H
X
L
X
High-Z
Active
N.A.
NO
L
Manual Powerdown
X
L
X
High-Z
Active
N.A.
YES
H
ICL322XE - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN)
X
NOTE 4
Active
N.A.
YES
H
Normal Operation
X
NOTE 4
High-Z
Active
N.A.
NO
L
Forced Auto Powerdown
ICL3244E
NO
H
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Disabled)
NO
H
Active
YES
H
YES
H
L
Active
NO
L
Normal Operation (Enhanced
Auto Powerdown Enabled)
YES
H
L
Active
YES
H
NO
H
L
High-Z
Active
NO
L
Powerdown Due to Enhanced
Auto Powerdown Logic
NO
H
L
High-Z
Active
YES
H
X
L
X
High-Z
Active
NO
L
Manual Powerdown
X
L
X
High-Z
Active
YES
H
ICL3244E - INVALID DRIVING FORCEON AND FORCEOFF (EMULATES AUTOMATIC POWERDOWN)
X
NOTE 4
Active
YES
H
Normal Operation
X
NOTE 4
High-Z
Active
NO
L
Forced Auto Powerdown
NOTES:
3. Applies only to the ICL3244E.
4. Input is connected to INVALID Output.
ICL3224E, ICL3226E, ICL3244E
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