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1µA电源电流、1Mbps、3.0V至5.5V、RS-232收发器,提供AutoShutdown Plus

产品详情

主要特征

应用/用途

Parametric specs for RS-232 Line Driver/Receivers
# Rx 2
# Tx 2
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 0.3
Internal Charge Pump Yes
External Caps 4
Cap. Value (µF) (nom) 0.1
Package/Pins SSOP/20
TQFN/20
TSSOP/20
Budgetary
Price (See Notes)
2.69
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简化框图

技术文档

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参量

Parametric specs for RS-232 Line Driver/Receivers
# Rx 2
# Tx 2
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 0.3
Internal Charge Pump Yes
External Caps 4
Cap. Value (µF) (nom) 0.1
Package/Pins SSOP/20
TQFN/20
TSSOP/20
Budgetary
Price (See Notes)
2.69
Parametric specs for RS-232 Line Driver/Receivers
# Rx 2
# Tx 2
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 0.3
Internal Charge Pump Yes
External Caps 4
Cap. Value (µF) (nom) 0.1
Package/Pins SSOP/20
TQFN/20
TSSOP/20
Budgetary
Price (See Notes)
2.69

主要特征

  • For Smaller Packaging:
    • MAX3228/MAX3229: +2.5V to +5.5V RS-232 Transceivers in UCSP™
  • 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
  • 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 (MAX3246E Available in UCSP)

应用/用途

  • 电池供电设备
  • 蜂窝电话
  • 手持式装置
  • 笔记本电脑、亚笔记本电脑与掌上电脑
  • 外设
  • 打印机

描述

The MAX3224–MAX3227/MAX3244/MAX3245 are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features and high data-rate capabilities.

All devices achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system.

The MAX3225/MAX3227/MAX3245 also feature MegaBaud™ operation, guaranteeing 1Mbps for highspeed applications such as communicating with ISDN modems. The MAX3224/MAX3226/MAX3244 guarantee 250kbps operation. The 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 charge pump requires only four small 0.1µF capacitors for operation from a 3.3V supply. The MAX3224-MAX3227 feature a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

All devices are available in a space-saving TSSOP and SSOP packages.

简化框图

MAX3224、MAX3225、MAX3226、MAX3227、MAX3244、MAX3245:引脚配置 MAX3224、MAX3225、MAX3226、MAX3227、MAX3244、MAX3245:引脚配置 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心