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參數(shù)資料
| 型號(hào)： | MAX563CPN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX DUAL 3.3V RS232 18-DIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 20 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS562 |
| 電源電壓： | 3 V ~ 3.6 V |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 18-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 18-PDIP |
| 包裝： | 管件 |
MAX563
_______________Detailed Description
The MAX563 consists of three sections: charge-pump
voltage converters, transmitters (drivers), and
receivers. Both the transmitters and the receivers are
inverting.
+3V to ±6V, Dual Charge-Pump Voltage
Converter
Two charge pumps either invert or double the incoming
VCC to generate the voltages required by the transmit-
ters. The first charge pump uses capacitor C1 to
double VCC; the resulting voltage is stored on the V+
reservoir capacitor. The second charge pump uses
capacitor C2 to invert V+; this negative voltage is
stored on the V- capacitor.
When
SHDN is low, the charge pumps are turned off,
V+ is pulled down to VCC by a 1k
resistor, and V-
rises to GND.
It is possible to draw some power from the V+ and V-
pins for external use. However, doing so diminishes the
charge-pump output voltages and reduces noise mar-
gins, so it is not recommended.
EIA/TIA-562 Transmitters
The MAX563’s drivers are inverting level translators that
convert +3V logic inputs to EIA/TIA-562 voltage levels.
With a VCC supply of only 3.0V, the driver outputs
deliver the EIA/TIA-562 ±3.7V minimum specification
under worst-case conditions—when both transmitters
are loaded with 3k
receivers (either EIA/TIA-232 or
EIA/TIA-562).
The transmitters are fast: the guaranteed data rate with
standard loads is 116kbps, which is the highest rate
commonly used by PC-to-PC communication software,
such as LapLink. The highest practical data rate may
be reduced if the other communicating device (RS-562
or RS-232) is not as fast, or if the cables present an
excessive capacitive load (>1000pF). Each transmitter
is designed to drive a single receiver; transmitters can
be paralleled to drive multiple receivers.
When
SHDN is low, the driver outputs are turned off.
Their output leakage currents are less than 10A when
pulled to GND or when driven to ±15V. This enables
two transmitters to be connected to the same line, pro-
vided that one of them is always disabled by taking
SHDN low.
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
4
_______________________________________________________________________________________
______________________________________________________________Pin Description
10, 13
NAME
FUNCTION
R2OUT, R1OUT
EN
Receiver enable. Connect
EN to GND to enable receivers, and take EN high to disable receivers.
CMOS receiver outputs. These outputs are active regardless of the state of
SHDN. They
are enabled when
EN is low, and disabled (Hi-Z) when EN is high.
C1+
Positive terminal of positive charge-pump capacitor.
11, 12
V+
+2VCC voltage generated by the positive charge pump. The voltage on V+ collapses to
VCC when SHDN is low.
PIN
1
2
T2IN, T1IN
C1-
Negative terminal of positive charge-pump capacitor.
CMOS driver inputs.
C2+
Positive terminal of inverting charge-pump capacitor.
16
C2-
Negative terminal of inverting charge-pump capacitor.
GND
V-
-2VCC voltage generated by the inverting charge pump. The voltage on V- collapses to
GND when
SHDN is low.
3
4
5
Ground.
T2OUT, T1OUT
EIA/TIA-562 voltage-level transmitter outputs. These outputs are disabled (Hi-Z) when
SHDN is low.
17
R2IN, R1IN
EIA/TIA-562 and EIA/TIA-232 voltage-level receiver inputs.
6
7
8, 15
9, 14
VCC
+3.0V to +3.6V supply voltage.
18
SHDN
Shutdown control. Connect to GND to shut down the charge pumps and the transmitters.
Take high to turn on the charge pumps and to enable the transmitters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX563CPN+ | 功能描述:RS-232接口集成電路 3.3V EIA TIA 562 Dual Transceiver 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: |
| MAX563CWN | 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: |
| MAX563CWN+ | 功能描述:RS-232接口集成電路 3.3V EIA TIA 562 Dual Transceiver 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: |
| MAX563CWN+T | 功能描述:RS-232接口集成電路 3.3V EIA TIA 562 Dual Transceiver 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: |
| MAX563CWN-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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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