参数资料
| 型号： | ICL3221ECA |
| 厂商： | Intersil |
| 文件页数： | 8/33页 |
| 文件大小： | 0K |
| 描述： | IC TXRX SGL RS232 3-5.5V 16SSOP |
| 标准包装： | 77 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
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16
FN4910.21
February 22, 2010
The INVALID output always indicates whether or not a
valid RS-232 signal is present at any of the receiver
inputs (see Table 2), giving the user an easy way to
determine when the interface block should power
down. In the case of a disconnected interface cable
where all the receiver inputs are floating (but pulled to
GND by the internal receiver pull down resistors), the
INVALID logic detects the invalid levels and drives the
output low. The power management logic then uses
this indicator to power down the interface block.
Reconnecting the cable restores valid levels at the
receiver inputs, INVALID switches high, and the power
management logic wakes up the interface block.
INVALID can also be used to indicate the DTR or RING
INDICATOR signal, as long as the other receiver inputs
are floating, or driven to GND (as in the case of a
powered down driver). Connecting FORCEOFF and
FORCEON together disables the automatic power-down
feature, enabling them to function as a manual
SHUTDOWN input (see Figure 4).
ICL3221E, ICL3223E
No
H
L
Active
N/A
L
Normal Operation
(Auto Power-Down Disabled)
No
H
Active
High-Z
N/A
L
Yes
H
L
Active
N/A
H
Normal Operation
(Auto Power-Down Enabled)
Yes
H
L
H
Active
High-Z
N/A
H
No
H
L
High-Z
Active
N/A
L
Power-Down Due to Auto
Power-Down Logic
No
H
L
H
High-Z
N/A
L
Yes
L
X
L
High-Z
Active
N/A
H
Manual Power-Down
Yes
L
X
H
High-Z
N/A
H
Manual Power-Down
with Receiver Disabled
No
L
X
L
High-Z
Active
N/A
L
Manual Power-Down
No
L
X
H
High-Z
N/A
L
Manual Power-Down
with Receiver Disabled
ICL3243E
No
H
N/A
Active
L
Normal Operation
(Auto Power-Down Disabled)
Yes
H
L
N/A
Active
H
Normal Operation
(Auto Power-Down Enabled)
No
H
L
N/A
High-Z
Active
L
Power-Down Due to Auto
Power-Down Logic
Yes
L
X
N/A
High-Z
Active
H
Manual Power-Down
No
L
X
N/A
High-Z
Active
L
Manual Power-Down
NOTE:
7. Applies only to the ICL3241E and ICL3243E.
TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE (Continued)
RS-232
SIGNAL
PRESENT
AT
RECEIVER
INPUT?
FORCEOFF
OR SHDN
INPUT
FORCEON
INPUT
EN
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
ROUTB
OUTPUTS
(NOTE 7)
INVALID
OUTPUT
MODE OF
OPERATION
FIGURE 2. POWER DRAIN THROUGH POWERED
DOWN PERIPHERAL
OLD
VCC
POWERED
GND
SHDN = GND
VCC
Rx
Tx
VCC
CURRENT
VOUT = VCC
FLOW
RS-232 CHIP
DOWN
UART
ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, ICL3243E
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| ICL3221ECAT | 制造商:INTERSIL 功能描述:New |
| ICL3221ECA-T | 功能描述:IC TXRX SGL RS232 3-5.5V 16SSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 系列:- 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:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| ICL3221ECAZ | 功能描述:RS-232接口集成电路 RS232 3V 1D/1R 15KV AUTODWN 16 SSOP COM RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| ICL3221ECAZ | 制造商:Intersil Corporation 功能描述:Transceiver IC |
| ICL3221ECAZA | 功能描述:IC TXRX SGL RS232 3-5.5V 16SSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 系列:- 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:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
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