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參數(shù)資料
| 型號(hào)： | MAX221ECUE+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS-232 5V 16-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 帶卷 (TR) |
MAX221
+5V, 1A, Single RS-232 Transceiver
with AutoShutdown
6
_______________________________________________________________________________________
Table 1. Output Control Truth Table
1
No
Shutdown
(AutoShutdown)
High-Z
1
High-Z
0
1
OPERATION
STATUS
X
0
VALID
RECEIVER
LEVEL
EN
X
Shutdown
(Forced Off)
X
Normal Operation
(Forced On)
X
0
Yes
Normal Operation
(AutoShutdown)
No
Yes
0
High-Z
Active
High-Z
TOUT
Active
High-Z
Active
0
FORCEOFF
1
0
1
High-Z
Active
ROUT
High-Z
Active
X
FORCEON
1
X
1
0
X = Don’t care
RS-232 SIGNAL PRESENT
AT RECEIVER INPUT
INVALID OUTPUT
Yes
High
No
Low
Table 2. INVALID Truth Table
+0.3V
-0.3V
INVALID
TO MAX221
POWER SUPPLY
AND TRANSMITTER
RIN
* TRANSMITTER IS DISABLED, REDUCING SUPPLY CURRENT TO 1
A IF
RECEIVER INPUT IS BETWEEN +0.3V AND -0.3V FOR AT LEAST 30
s.
30
s
COUNTER
R
+2.7V
-2.7V
INVALID
TO MAX221
POWER SUPPLY
RIN
* TRANSMITTER IS ENABLED IF:
RECEIVER INPUT IS GREATER THAN +2.7V OR LESS THAN -2.7V;
RECEIVER INPUT HAS BEEN BETWEEN +0.3V AND -0.3V FOR LESS THAN 30
s.
30s
COUNTER
R
Figure 2b. Transmitter Enabled Using AutoShutdown
Figure 2a. Entering 1A Supply Mode via AutoShutdown
FORCEOFF
POWER DOWN
INVALID
FORCEON
INVALID IS AN INTERNALLY GENERATED SIGNAL USED BY
THE AUTOSHUTDOWN LOGIC AND APPEARS AS AN OUTPUT.
POWER DOWN IS ONLY AN INTERNAL SIGNAL. IT CONTROLS THE
OPERATIONAL STATUS OF THE TRANSMITTER AND POWER SUPPLIES.
Figure 2c. AutoShutdown Logic
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| MAX221EEAE+ | 功能描述:RS-232接口集成電路 15kV ESD-Protected 5V 1uA RS-232 Trx RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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| MAX221EEUE | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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