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参数资料
| 型号： | MAX221EUE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC TX RS232 5V 1UA SHTDN 16TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
MAX221
+5V, 1A, Single RS-232 Transceiver
with AutoShutdown
4
_______________________________________________________________________________________
Typical Operating Characteristics
(VCC = +5V, 250kbps data rate, 0.1F capacitors, transmitter loaded with 3k and CL, TA = +25°C, unless otherwise noted.)
-10
-6
-8
-2
-4
2
0
4
8
6
10
0
1000
2000
3000
4000
5000
TRANSMITTER OUTPUT
VOLTAGE vs. LOAD CAPACITANCE
MAX221-01
LOAD CAPACITANCE (pF)
TRANSMITTER
OUTPUT
VOLTAGE
(V)
250kbps
120kbps
20kbps
120kbps
0
10
20
30
40
50
0
1000
2000
3000
4000
5000
SLEW RATE vs.
LOAD CAPACITANCE
MAX221-02
LOAD CAPACITANCE (pF)
SLEW
RATE
(V/
s)
+SLEW
-SLEW
0
10
20
30
40
50
0
1000
2000
3000
4000
5000
OPERATING SUPPLY
CURRENT vs. LOAD CAPACITANCE
MAX221-03
LOAD CAPACITANCE (pF)
SUPPLY
CURRENT
(mA)
250kbps
20kbps
120kbps
FUNCTION
PIN
NAME
1
EN
Receiver Enable Control. Drive low for normal operation. Drive high to force the receiver output
(ROUT) into a high-impedance state.
2
C1+
Positive Terminal of the Voltage Doubler Charge-Pump Capacitor
3
V+
Positive Voltage Generated by the Charge Pump
7
V-
Negative Voltage Generated by the Charge Pump
6
C2-
Negative Terminal of the Inverting Charge-Pump Capacitor
5
C2+
Positive Terminal of the Inverting Charge-Pump Capacitor
4
C1-
Negative Terminal of the Voltage Doubler Charge-Pump Capacitor
12
FORCEON
Drive high to override automatic circuitry, keeping transmitter and charge pump on.
FORCEOFF must be high (Table 1).
11
TIN
TTL/CMOS Transmitter Input
10
INVALID
Output of the Invalid Signal Detector. INVALID is pulled low if no valid RS-232 level is present on
the receiver input.
9
ROUT
TTL/CMOS Receiver Output
8
RIN
RS-232 Receiver Input
Pin Description
16
FORCEOFF
Force-Off Input, active low. Drive low to shut down transmitter, receiver, and on-board charge
pump. This overrides all automatic circuitry and FORCEON (Table 1).
15
VCC
+4.5V to +5.5V Supply Voltage
14
GND
Ground
13
TOUT
RS-232 Transmitter Output
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| MAX222C | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:+5V-Powered, Multichannel RS-232 Drivers/Receivers |
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