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參數(shù)資料
| 型號： | MAX221EAE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quadruple Bus Buffer Gates With 3-State Outputs 14-VQFN -40 to 85 |
| 中文描述： | LINE TRANSCEIVER, PDSO16 |
| 封裝： | SSOP-16 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 110K |
| 代理商： | MAX221EAE |
M
+5V, 1μA, Single RS-232 Transceiver
with AutoShutdown
6
_______________________________________________________________________________________
Table 1. Output Control Truth Table
1
No
Shutdown
(AutoShutdown)
High-Z
1
High-Z
0
1
1
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
0
High-Z
Active
Active
High-Z
TOUT
Active
High-Z
Active
0
FORCEOFF
1
0
1
1
1
1
High-Z
High-Z
Active
Active
ROUT
High-Z
Active
Active
X
FORCEON
1
X
1
0
0
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
μ
A IF
RECEIVER INPUT IS BETWEEN +0.3V AND -0.3V FOR
AT LEAST
30
μ
s.
30
μ
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
μ
s.
30μs
COUNTER
R
Figure 2b. Transmitter Enabled Using AutoShutdown
Figure 2a. Entering 1μA 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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX221EAE+ | 功能描述:RS-232接口集成電路 5V 1uA Single RS-232 Txr w/AutoShut 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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX221EAE+T | 功能描述:RS-232接口集成電路 5V 1uA Single RS-232 Txr w/AutoShut 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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX221EAE-T | 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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX221ECAE | 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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX221ECAE+ | 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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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