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參數資料
| 型號： | MAX3232CUE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Leaded Cartridge Fuse; Current Rating:250mA; Voltage Rating:250V; Fuse Terminals:Axial Lead; Fuse Type:Time Delay; Voltage Rating:250V; Body Material:Glass; Diameter:5.2mm; Fuse Size/Group:5 x 20 mm; Lead Length:38.1mm RoHS Compliant: Yes |
| 中文描述： | LINE TRANSCEIVER, PDSO16 |
| 封裝： | 4.40 MM, 0.65 MM PITCH, MO-153AC, TSSOP-16 |
| 文件頁數： | 9/16頁 |
| 文件大?。?/td> | 268K |
| 代理商： | MAX3232CUE |
M
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1μF External Capacitors
_______________________________________________________________________________________
9
Power-S upply Dec oupling
In most circumstances, a 0.1μF bypass capacitor is
adequate. In applications that are sensitive to power-
supply noise, decouple V
CC
to ground with a capacitor
of the same value as charge-pump capacitor C1. Connect
bypass capacitors as close to the IC as possible.
Operation Down to 2.7V
Transmitter outputs will meet EIA/TIA-562 levels of
±3.7V with supply voltages as low as 2.7V.
T ransmitter Outputs when
Exiting S hutdown
Figure 3 shows two transmitter outputs when exiting
shutdown mode. As they become active, the two trans-
mitter outputs are shown going to opposite RS-232 lev-
els (one transmitter input is high, the other is low).
Each transmitter is loaded with 3k
in parallel with
2500pF. The transmitter outputs display no ringing or
undesirable transients as they come out of shutdown.
Note that the transmitters are enabled only when the
magnitude of V- exceeds approximately 3V.
Mouse Driveability
The MAX3241 has been specifically designed to power
serial mice while operating from low-voltage power sup-
plies. It has been tested with leading mouse brands from
manufacturers such as Microsoft and Logitech. The
MAX3241 successfully drove all serial mice tested and
met their respective current and voltage requirements.
Figure 4a shows the transmitter output voltages under
increasing load current at 3.0V. Figure 4b shows a typical
mouse connection using the MAX3241.
Table 1. MAX3222/MAX3237/MAX3241
Shutdown and Enable Control Truth Table
Table 2. Required Minimum Capacitor Values
5V/div
V
CC
= 3.3V
C1–C4 = 0.1
μ
F
2V/div
T2
50
μ
s/div
T1
Figure 3. Transmitter Outputs when Exiting Shutdown or
Powering Up
V
CC
(V)
C1
(μF)
4.5 to 5.5
0.047
3.0 to 5.5
0.1
C2, C3, C4
(μF)
MAX3222/MAX3232/MAX3241
0.33
0.47
1
Active
0
1
Active
1
SHDN
High-Z
1
0
High-Z
0
0
T_OUT
EN
High-Z
Active
High-Z
Active
R_OUT
R_OUTB
(MAX3237/
MAX3241)
Active
Active
Active
Active
3.0 to 3.6
0.22
3.15 to 3.6
0.1
MAX3237
0.22
0.1
4.5 to 5.5
0.047
3.0 to 5.5
0.22
0.33
1.0
3.0 to 3.6
0.1
0.1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX3232CUE+ | 功能描述:RS-232接口集成電路 3-5.5V 235kbps Transceiver RoHS:否 制造商:Exar 數據速率: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: |
| MAX3232CUE+ | 制造商:Maxim Integrated Products 功能描述:IC RS232 TRANSCEIVER 16TSSOP 制造商:Maxim Integrated Products 功能描述:IC, RS232 TRANSCEIVER, 16TSSOP 制造商:Maxim Integrated Products 功能描述:IC, RS232 TRANSCEIVER, 16TSSOP; Device Type:Transceiver; Interface Type:RS232; No. of Drivers:2; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Driver Case Style:TSSOP; No. of Pins:16; Operating Temperature Min:0C; Operating ;RoHS Compliant: Yes |
| MAX3232CUE+T | 功能描述:RS-232接口集成電路 3-5.5V 235kbps Transceiver RoHS:否 制造商:Exar 數據速率: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: |
| MAX3232CUE-T | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率: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: |
| MAX3232CWE | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率: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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