74hc373引脚及功能?max3232中文资料pdf?MAX3232CSE中文资料

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19-0273; Rev 7; 1/07

Transceivers Using Four 0.1µF External Capacitors, Low-Power, up to 1Mbps, True RS-232________________General Description__Next Generation Device FeaturesThe MAX3222/MAX3232/MAX3237/MAX3241 trans-

ceivers have a proprietary low-dropout transmitter out-♦For Smaller Packaging:MAX3228E/MAX3229E: +2.5V to +5.5V RS-232put stage enabling true RS-232 performance from aTransceivers in UCSP™

3.0V to 5.5V supply with a dual charge pump. The

devices require only four small 0.1µF external charge-♦For Integrated ESD Protection:

pump capacitors. The MAX3222, MAX3232, andMAX3222E/MAX3232E/MAX3237E/MAX3241E*/MAX3241 are guaranteed to run at data rates ofMAX3246E: ±15kV ESD-Protected, Down to 10nA,120kbps while maintaining RS-232 output levels. The3.0V to 5.5V, Up to 1Mbps, True RS-232

MAX3237 is guaranteed to run at data rates of 250kbpsTransceivers

in the normal operating mode and 1Mbps in the♦For Low-Voltage or Data Cable Applications:MegaBaud™ operating mode, while maintaining RS-232MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, output levels.2 Tx/2 Rx RS-232 Transceivers with ±15kV

ESD-Protected I/O and Logic PinsThe MAX3222/MAX3232 have 2 receivers and 2

drivers. The MAX3222 features a 1µA shutdown mode

that reduces power consumption and extends battery

life in portable systems. Its receivers remain active in

shutdown mode, allowing external devices such asmodems to be monitored using only 1µA supply cur-

rent. The MAX3222 and MAX3232 are pin, package,and functionally compatible with the industry-standardMAX242 and MAX232, respectively.The MAX3241 is a complete serial port (3 drivers/5 receivers) designed for notebook and subnotebookcomputers. The MAX3237 (5 drivers/3 receivers) is idealfor fast modem applications. Both these devices feature

a shutdown mode in which all receivers can remain+Denotes lead-free package.

active while using only 1µA supply current. Receivers R1

(MAX3237/MAX3241) and R2 (MAX3241) have extra out-

puts in addition to their standard outputs. These extra

outputs are always active, allowing external devicesOrdering Information continued at end of data sheet.such as a modem to be monitored without forward bias-

ing the protection diodes in circuitry that may have VCCcompletely removed.The MAX3222, MAX3237, and MAX3241 are available

in space-saving TSSOP and SSOP packages. ________________________ApplicationsNotebook, Subnotebook, and Palmtop ComputersHigh-Speed ModemsBattery-Powered EquipmentHand-Held EquipmentPeripheralsPrinters

Typical Operating Circuits appear at end of data sheet.*Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.

________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at *

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