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MAX3243CAI

Name: MAX3243CAI
Rating: 4.7 (12 reviews)

IC TRANSCEIVER FULL 3/5 28SSOP

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製造商。部分 #MAX3243CAI
包 SSOP-28
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規格

Package	Tube,Tube
ProductStatus	Obsolete
Type	Transceiver
Protocol	RS232
NumberofDrivers/Receivers	3/5
Duplex	Full
ReceiverHysteresis	300 mV
DataRate	120Kbps
Voltage-Supply	3V ~ 5.5V
OperatingTemperature	0°C ~ 70°C
MountingType	Surface Mount
Package/Case	28-SSOP (0.209, 5.30mm Width)

概述

Description

MAX3243CAI is a Maxim quad RS-232 transceiver. It provides four line drivers (TTL/CMOS to RS-232) and four line receivers (RS-232 to TTL/CMOS), enabling two-way serial communication between a microcontroller and RS-232 devices (PCs, modems, etc.).
Key points:
- Single-supply operation: 3.0 V to 5.5 V, no dual rails needed.
- On-chip charge pump to generate RS-232 voltages from the supply; external charge-pump capacitors are required (typical values in the datasheet, often 0.1 µF to 1 µF each).
- Typically supports standard RS-232 data rates (exact maximum rate per datasheet).
- Used for interfacing microcontrollers to RS-232 ports, with appropriate logic-level compatibility on the MCU side.
CAI denotes a specific package/variant of the MAX3243; check the datasheet for exact pinout and packaging.

Features

Concise features of MAX3243CAI:
- Quad RS-232 transceiver: 4 drivers and 4 receivers
- Supply voltage: 3.0V to 5.5V
- On-chip charge pump with four external capacitors (typical 0.1 µF)
- RS-232 level outputs: ±6V to ±7V ( complies with EIA-232)
- Data rate: up to about 250 kbps
- TTL/CMOS-compatible logic inputs
- Low quiescent current; includes shutdown/power-down option
- ESD protection on I/O pins
- Packaging/Grade: CAI variant (industrial/commercial options available)
Note: exact figures (capacitor values, temp range) depend on package/configuration; refer to the specific datasheet for the CAI variant.

Package

MAX3243CAI comes in a 16‑pin Small Outline IC package (SOIC). RoHS‑compliant.

Pinout

- Pin count: 20 pins (20-pin package, MAX3243CAI)
- Function: Quad RS-232 transceiver. Provides four RS-232 driver/receiver channels (T1IN–T4IN to T1OUT–T4OUT and R1IN–R4IN to R1OUT–R4OUT), converting TTL/CMOS logic levels to RS-232 voltage levels and RS-232 levels back to TTL/CMOS. Includes an onboard charge-pump to generate the required RS-232 voltages from a single supply.

Manufacturer

The MAX3243CAI is manufactured by Maxim Integrated Products, Inc. Maxim is a global semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (the brand has since become part of Analog Devices).

Application

Application areas: RS-232 serial interfaces in microcontrollers and embedded systems; connections to PCs, modems, printers; data acquisition and instrumentation; industrial automation and control; point-of-sale terminals; networking equipment console ports (routers/switches); telecom and test equipment.

Equivalent

Quad RS-232 transceivers from other vendors are the closest equivalents. Examples:
- STMicroelectronics SP3232/SP3232E (Quad RS-232 transceiver, 3.0–5.5V)
- Analog Devices ADM3241/ADM3242/ADM3244 (Quad RS-232 transceivers)
- Texas Instruments SN75C3243 / SN75C3244 (Quad RS-232 transceivers)
Note: verify exact pinout, supply voltage, and data-rate when substituting.