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MAX3232CSE+T

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MAX3232CSE+T 的货源和报价

MAX3232CSE+T 的相关技术信息

概述

The MAX3222/MAX3232/MAX3237/MAX3241 transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump. The devices require only four small 0.1µF external charge-pump capacitors. The MAX3222, MAX3232, and MAX3241 are guaranteed to run at data rates of 120kbps while maintaining RS-232 output levels. The MAX3237 is guaranteed to run at data rates of 250kbps in the normal operating mode and 1Mbps in the MegaBaud™ operating mode, while maintaining RS-232 output levels.

The 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 as modems to be monitored using only 1µA supply current. The MAX3222 and MAX3232 are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively.

The MAX3241 is a complete serial port (3 drivers/ 5 receivers) designed for notebook and subnotebook computers. The MAX3237 (5 drivers/3 receivers) is ideal for fast modem applications. Both these devices feature a shutdown mode in which all receivers can remain active while using only 1µA supply current. Receivers R1 (MAX3237/MAX3241) and R2 (MAX3241) have extra outputs in addition to their standard outputs. These extra outputs are always active, allowing external devices such as a modem to be monitored without forward biasing the protection diodes in circuitry that may have V_CC completely removed.

The MAX3222, MAX3237, and MAX3241 are available in space-saving TSSOP and SSOP packages.

关键特性 应用

For Smaller Packaging: MAX3228E/MAX3229E: +2.5V to +5.5V RS-232 Transceivers in UCSP™
For Integrated ESD Protection: MAX3222E/MAX3232E/MAX3237E/MAX3241E*/ MAX3246E: ±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers
For Low-Voltage or Data Cable Applications: MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2 Tx/2 Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins

电池供电设备

手持式装置

高速调制解调器

笔记本电脑、亚笔记本电脑与掌上电脑

外设

打印机

Key Specifications: RS-232 Line Driver/Receivers

Part Number

Supply Voltage (V)

Number of Tx

Number of Rx

Data Rate (kbps)

Typ. I_CC Current (mA)

Internal Charge Pump

Number of Ext. Caps

Nom. Cap. Value (µF)

Number of Rx Active in Shutdown

Features

Package

Operating Temp. Range (°C)

RoHS Available

Price

MAX3222

3.3 5

120

0.3

Yes

0.1

•

Shutdown

•	Three State Rx O/P

20/SSOP
18/PDIP
20/TSSOP
18/SOIC

0 to +70 -40 to +85

Yes

$1.69 @ 1k

MAX3232

120

0.3

•	True RS-232

16/SSOP
16/PDIP
16/SOIC
16/TSSOP

$1.69 @ 1k

MAX3237

1,000

0.5

•	Megabaud Data Rate

•

Shutdown

•	Three State Rx O/P

•	True RS-232

28/SSOP

$3.29 @ 1k

MAX3241

120

0.3

•	Micropower

•

Shutdown

•	Three State Rx O/P

•	True RS-232

28/SSOP
28/TSSOP
28/SOIC

$3.11 @ 1k

应用笔记

App Note 654: New RS-232 ICs Feature 1µA Supply Current, ±15kV ESD Protection, and 3V Operation - MAX3222, MAX3232, MAX3241 (English only)

App Note 723: Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards - MAX3232 (English only)

App Note 761: Automatic Test Equipment on a Budget - MAX3232 (English only)

App Note 2141: Determining Clock Accuracy Requirements for UART Communications - MAX3222, MAX3232, MAX3237, MAX3241 (English only)

应用笔记2394：MAX1169 ADC与PIC微控制器的接口 - MAX3232

App Note 3024: IrDA and RS-232: A Match Made in Silicon - MAX3222 (English only)

App Note 3424: RS-232 Powered Temperature Sensor - MAX3232 (English only)

注释

MAX242 pinout (MAX3222)

Industry standard MAX232 pinout (MAX3232)

World's fastest RS-232 transceiver at 1Mbps (MAX3237)

Mouse driveability, two spare receivers active in shutdown (MAX3241)
*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.

图表

Typical Operating Circuits