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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉(h脿o)锛� | ADM232AARW |
| 寤犲晢锛� | Analog Devices Inc |
| 鏂囦欢闋佹暩(sh霉)锛� | 6/11闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC TX/RX DUAL RS-232 5V 16SOIC |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Power Line Monitoring |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 47 |
| 椤炲瀷锛� | 鏀剁櫦(f膩)鍣� |
| 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉)锛� | 2/2 |
| 瑕�(gu墨)绋嬶細 | RS232 |
| 闆绘簮闆诲锛� | 4.5 V ~ 5.5 V |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 16-SOIC锛�0.295"锛�7.50mm 瀵級 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 16-SOIC W |
| 鍖呰锛� | 绠′欢 |
REV.
ADM222/ADM232A/ADM242
鈥�4鈥�
VIN
VOUT
50pF
3k
SHDN
Figure 5. Shutdown Test Circuit
+ 5V
TRANSMITTER
OUTPUT
SHDN
INPUT
鈥� 5V
V+
0V
3V
V鈥�
tDT
Figure 6. Transmitter Shutdown Disable Timing
2
4
6
5
12
11
13
10
3
7
15
8
14
9
18
* INTERNAL 400k PULL-UP RESISTOR
ON EACH TTL/CMOS INPUT
** INTERNAL 5k PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
+5V TO +10V
VOLTAGE DOUBLER
+5V TO 鈥�10V
VOLTAGE INVERTER
C1+
C1鈥�
V+
V鈥�
C2+
C2鈥�
T1
ADM222
T2
R1
R2
C1
0.1 F
C2
0.1 F
C3
0.1 F
GND
TTL/CMOS
OUTPUTS
R1OUT
R2OUT
T1OUT
T2OUT
R1IN
R2IN
T1IN
T2IN
TTL/CMOS
INPUTS
*
RS-232
OUTPUTS
RS-232
INPUTS
**
5V INPUT
C5
0.1 F
6.3V
SHDN
16
C4
0.1 F
VCC
17
Figure 7. ADM222 Typical Operating Circuit
PIN FUNCTION DESCRIPTION
Mnemonic
Function
VCC
Power Supply Input, 5 V
卤 10%.
V+
Internally generated positive supply (+10 V
nominal).
V鈥�
Internally generated negative supply (鈥�10 V
nominal).
GND
Ground Pin. Must be connected to 0 V.
C1+
External capacitor 1, (+ terminal) is connected
to this pin.
C1鈥�
External capacitor 1, (鈥� terminal) is connected
to this pin.
C2+
External capacitor 2, (+ terminal) is connected
to this pin.
C2鈥�
External capacitor 2, (鈥� terminal) is connected
to this pin.
TIN
Transmitter (Driver) Inputs. These inputs accept
TTL/CMOS levels. An internal 400 k
pull-up
resistor to VCC is connected on each input.
TOUT
Transmitter (Driver) Outputs. These are RS-232
levels (typically
卤9 V).
RIN
Receiver Inputs. These inputs accept RS-232
signal levels. An internal 5 k
pull-down resistor
to GND is connected on each of these inputs.
ROUT
Receiver Outputs. These are TTL/CMOS levels.
NC
No Connect. No connections are required to
this pin.
EN
(ADM242 Only) Active Low Digital Input. May
be used to enable or disable (three-state) both
receiver outputs.
SHDN
(ADM222 and ADM242) Active Low Digital
Input. May be used to disable the device so that
the power consumption is minimized. On the
ADM222 all drivers and receivers are disabled.
On the ADM242 the drivers are disabled but the
receivers remain enabled.
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
TOP VIEW
(Not to Scale)
ADM222
NC = NO CONNECT
R2IN
T2OUT
NC
C1+
V+
C1鈥�
V鈥�
C2鈥�
C2+
T2IN
SHDN
VCC
GND
T1OUT
T1IN
R1OUT
R1IN
R2OUT
Figure 8. ADM222 DIP and SOIC Pin Configurations
B
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