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参数资料
型号： MAX3325EAI
厂商： Maxim Integrated Products
文件页数： 1/12页
文件大小： 0K
描述： IC TXRX DUAL RS232 LCD 28-SSOP
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 46
类型： 收发器
驱动器/接收器数： 2/2
规程： RS232
电源电压： 3 V ~ 3.6 V
安装类型： 表面贴装
封装/外壳： 28-SSOP（0.209"，5.30mm 宽）
供应商设备封装： 28-SSOP
包装： 管件
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX3325 integrates a two-transmitter, two-receiver
RS-232 transceiver with an LCD supply plus tempera-
ture-compensated contrast control. It is intended for
small 3V instruments requiring a 5V supply for either
logic or an LCD display, an adjustable bias signal for
contrast, LCD temperature compensation, and an
RS-232 interface for serial communications.
The 5V supply is a regulated charge pump followed by
a low-dropout (LDO) linear regulator capable of supply-
ing 11mA for the 5V LCD power.
The MAX3325 has an internal 6-bit digital-to-analog
converter (DAC) providing 64 contrast levels, plus an
internal temperature sensor that compensates the
LCD’s contrast for changes in ambient temperature.
The LCD contrast can be designed for any voltage
range from -5V to +2V.
The MAX3325’s 250kbps RS-232 transceiver meets all
EIA-232E specifications with input voltages from +3.0V
to +3.6V. Both the RS-232 section and the LCD supply
circuitry can be independently placed in shutdown, tai-
loring power consumption for battery-powered equip-
ment. The MAX3325 is available in 28-pin SSOP and
narrow DIP packages.
Applications
PDAs and Palmtop Computers
Handy Terminals
GPS Receivers
Hand-Held Medical Equipment
Industrial Test Equipment
Features
o +3.0V to +3.6V Single-Supply Operation
o Provides 5.0V Regulated Output at 11mA in
3V Systems
o 6-Bit DAC with Up/Down Interface for LCD
Contrast Adjustment
o Selectable Positive or Negative LCD Bias
o Meets EIA-232E Specifications at 250kbps—
Guaranteed
o 1A Shutdown Mode
o Uses Small 0.22F Capacitors—No Inductors
Required
o Temperature Sensor for LCD Contrast
Compensation
o Simple, Flexible Design Procedure for a Broad
Range of LCD Displays
MAX3325
3V Dual RS-232 Transceiver with
LCD Supply and Contrast Controller
________________________________________________________________
Maxim Integrated Products
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1
2
3
4
5
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8
9
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11
12
13
14
C1+
V+
VDD
GND
C1-
REG
UP
T1OUT
T2OUT
T1IN
T2IN
SD232
SDLCD
DOWN
DAC
REF+
FB
REF-
TEMP
LCD
VL
R2OUT
R1OUT
R1IN
R2IN
V-
C2-
C2+
SSOP/DIP
TOP VIEW
MAX3325
19-1573; Rev 0; 10/99
Typical Operating Circuit appears at end of data sheet.
Pin Configuration
Ordering Information
PART
MAX3325CAI
MAX3325CNI
MAX3325EAI
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
28 SSOP
28 Narrow Plastic DIP
28 SSOP
MAX3325ENI
-40°C to +85°C
28 Narrow Plastic DIP
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相关代理商/技术参数
参数描述
MAX3325EAI+ 功能描述:RS-232接口集成电路 3V Dual Tcvr w/LCD S&C Controller RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX3325EAI+T 功能描述:RS-232接口集成电路 3V Dual Tcvr w/LCD S&C Controller RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX3325EAI-T 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX3325ENI 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX332CPE 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16
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