MAX232中文资料

MAX232

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MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

MAX232

74ls00的引脚图 一下max232引脚图以及max232和电脑串

是常用的2输入四与非门集成电路 口的连接电路，RS232引脚定义。看下面的

vcc 4A 4B 4Y 3A 3B 3Y

------------------------------ 图。

14 13 12 11 10 9 8

1 2 3 4 5 6 7

------------------------------

1A 2A 1Y 2A 2B 2Y GND

逻辑图

Y=nor(A and B)

74LS00真值表：

A＝1 B=1 Y=0

A＝0 B=1 Y=1 1 ：DCD :载波检测。主要用于Modem通知

计算机其处于在线状态，即Modem检测到

A＝1 B=0 Y=1 拨号音，处于在线状态。

A＝0 B=0 Y=1 2 ：RXD:此引脚用于接收外部设备送来的

数据；在你使用Modem时，你会发现RXD

指示灯在闪烁，说明RXD引脚上有数据进

入。

与非门经常用来实现组合逻辑的运算 3 ：TXD:此引脚将计算机的数据发送给外

双列直插封装 部设备；在你使用Modem时，你会发现TXD

极限值 指示灯在闪烁，说明计算机正在通过TXD

电源电压7V 引脚发送数据。

max232是一种把电脑的串行口rs232信号4

74ls00的引脚图 一下max232引脚图以及max232和电脑串

是常用的2输入四与非门集成电路 口的连接电路，RS232引脚定义。看下面的

vcc 4A 4B 4Y 3A 3B 3Y

------------------------------ 图。

14 13 12 11 10 9 8

1 2 3 4 5 6 7

------------------------------

1A 2A 1Y 2A 2B 2Y GND

逻辑图

Y=nor(A and B)

74LS00真值表：

A＝1 B=1 Y=0

A＝0 B=1 Y=1 1 ：DCD :载波检测。主要用于Modem通知

计算机其处于在线状态，即Modem检测到

A＝1 B=0 Y=1 拨号音，处于在线状态。

A＝0 B=0 Y=1 2 ：RXD:此引脚用于接收外部设备送来的

数据；在你使用Modem时，你会发现RXD

指示灯在闪烁，说明RXD引脚上有数据进

入。

与非门经常用来实现组合逻辑的运算 3 ：TXD:此引脚将计算机的数据发送给外

双列直插封装 部设备；在你使用Modem时，你会发现TXD

极限值 指示灯在闪烁，说明计算机正在通过TXD

电源电压7V 引脚发送数据。

max232是一种把电脑的串行口rs232信号4

元器件交易网

19-3052; Rev 3; 8/04

8-/4-/2-Channel,with ±10V, ±5V12-Bit,, and 0 to +5V Analog Input Ranges

Simultaneous-Sampling ADCsGeneral Description

The MAX1304–MAX1306/MAX1308–MAX1310/MAX1312– Up to Eight Channels of Simultaneous Sampling

MAX1314 12-bit, analog-to-digital converters (ADCs) offereight, four, or two independent input channels.8ns Aperture Delay

Independent track-and-hold (T/H) circuitry provides simul-100ps Channel-to-Channel T/H Matchtaneous sampling for each channel. The MAX1304/ Extended Input Ranges

MAX1

19-1501; Rev 0; 7/99

Low-Voltage, High-Speed, Quad, SPST

CMOS Analog Switches

____________________________Features

The MAX4614/MAX4615/MAX4616 quad, low-voltage,oFast Switching Times

high-speed, single-pole/single-throw (SPST) analogswitches are pin compatible with the industry-standard12ns tON, 10ns tOFF

74HC4066/MAX4610 analog switches. On-resistanceoPin Compatible with Industry-Standard(10 max) is matched between switches to 1 max74HC4066/MAX4610and is flat (1 max) over the specified signal range.oGuaranteed On-Resistance

Each

元器件交易网www.cecb2b.com

19-3157; Rev 2; 8/04

8-/4-/2-Channel, 14-Bit, Simultaneous-Sampling ADCswith ±10V, ±5V, and 0 to +5V Analog Input Ranges

General Description

FeaturesThe MAX1316–MAX1318/MAX1320–MAX1322/MAX1324–MAX1326 14-bit, analog-to-digital converters (ADCs) offer?8-/4-/2-Channel, 14-Bit ADCs

±1.5 LSB INL, ±1 LSB DNL, No Missing Codestwo, four, or eight independent input channels.90dBc SFDR, -86dBc THD, 76.5dB SINAD, 77dBIndependent track/hold (T/H) circuitry provides simultane-ous sampling for each channel. The MAX1316/S

330MHz, Gain of +1/Gain of +2

Closed-Loop Buffers

_______________General Description

____________________________Features

The MAX4178/MAX4278 are ±5V, wide-bandwidth, fast-oHigh Speed:

settling, closed-loop buffers featuring high slew rate, high330MHz -3dB Bandwidth (MAX4178)precision, high output current, low noise, and low differen-tial gain and phase errors. The MAX4178, with a -3dB310MHz -3dB Bandwidth (MAX4278)

bandwidth of 330MHz, is preset for unity voltage gain250MHz Full-Power Bandwidth (VOUT= 2Vp-p)(0dB). The MAX42

330MHz, Gain of +1/Gain of +2

Closed-Loop Buffers

_______________General Description

____________________________Features

The MAX4178/MAX4278 are ±5V, wide-bandwidth, fast-oHigh Speed:

settling, closed-loop buffers featuring high slew rate, high330MHz -3dB Bandwidth (MAX4178)precision, high output current, low noise, and low differen-tial gain and phase errors. The MAX4178, with a -3dB310MHz -3dB Bandwidth (MAX4278)

bandwidth of 330MHz, is preset for unity voltage gain250MHz Full-Power Bandwidth (VOUT= 2Vp-p)(0dB). The MAX42

19-0333; Rev 0; 12/94

3.3V-Powered, 10Mbps and Slew-Rate-Limited

True RS-485/RS-422 Transceivers

_______________General Description

____________________________Features

The MAX3483, MAX3485, MAX3486, MAX3488,MAX3490, and MAX3491 are 3.3V, low-power trans-oOperate from a Single 3.3V Supply—ceivers for RS-485 and RS-422 communication. EachNo Charge Pump!part contains one driver and one receiver. TheoInteroperable with +5V Logic

MAX3483 and MAX3488 feature slew-rate-limited dri-vers that minimize EMI and reduce reflections causedo8n

元器件交易网

MAX3232E

3-VTO5.5-VMULTICHANNELRS-232LINEDRIVER/RECEIVER

WITH±15-kVIECESDPROTECTION

SLLS664A–AUGUST2005–REVISEDAPRIL2007

FEATURES

ESDProtectionforRS-232BusPins–±15kV(HBM)

–±8kV(IEC61000-4-2,ContactDischarge)–±15kV(IEC61000-4-2,Air-GapDischarge)MeetsorExceedstheRequirementsofTIA/EIA-232-FandITUv.28StandardsOperatesWith3-Vto5.5-VVCCSupplyOperatesupto250kbit/s

TwoDriversandTwoReceiversLowSupplyCurrent...300µATypExternalCapacitors...4×0.1µF

Accepts5-VLogicInputWith3.3-VSupplyPinCompatibletoAlter